Commit Graph

1233840 Commits

Author SHA1 Message Date
Filipe Manana
609d993797 btrfs: fix qgroup record leaks when using simple quotas
When using simple quotas we are not supposed to allocate qgroup records
when adding delayed references. However we allocate them if either mode
of quotas is enabled (the new simple one or the old one), but then we
never free them because running the accounting, which frees the records,
is only run when using the old quotas (at btrfs_qgroup_account_extents()),
resulting in a memory leak of the records allocated when adding delayed
references.

Fix this by allocating the records only if the old quotas mode is enabled.
Also fix btrfs_qgroup_trace_extent_nolock() to return 1 if the old quotas
mode is not enabled - meaning the caller has to free the record.

Fixes: 182940f4f4 ("btrfs: qgroup: add new quota mode for simple quotas")
Reported-by: syzbot+d3ddc6dcc6386dea398b@syzkaller.appspotmail.com
Link: https://lore.kernel.org/linux-btrfs/00000000000004769106097f9a34@google.com/
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2023-11-09 14:01:59 +01:00
Filipe Manana
6c8e69e4a7 btrfs: fix race between accounting qgroup extents and removing a qgroup
When doing qgroup accounting for an extent, we take the spinlock
fs_info->qgroup_lock and then add qgroups to the local list (iterator)
named "qgroups". These qgroups are found in the fs_info->qgroup_tree
rbtree. After we're done, we unlock fs_info->qgroup_lock and then call
qgroup_iterator_nested_clean(), which will iterate over all the qgroups
added to the local list "qgroups" and then delete them from the list.
Deleting a qgroup from the list can however result in a use-after-free
if a qgroup remove operation happens after we unlock fs_info->qgroup_lock
and before or while we are at qgroup_iterator_nested_clean().

Fix this by calling qgroup_iterator_nested_clean() while still holding
the lock fs_info->qgroup_lock - we don't need it under the 'out' label
since before taking the lock the "qgroups" list is always empty. This
guarantees safety because btrfs_remove_qgroup() takes that lock before
removing a qgroup from the rbtree fs_info->qgroup_tree.

This was reported by syzbot with the following stack traces:

   BUG: KASAN: slab-use-after-free in __list_del_entry_valid_or_report+0x2f/0x130 lib/list_debug.c:49
   Read of size 8 at addr ffff888027e420b0 by task kworker/u4:3/48

   CPU: 1 PID: 48 Comm: kworker/u4:3 Not tainted 6.6.0-syzkaller-10396-g4652b8e4f3ff #0
   Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
   Workqueue: btrfs-qgroup-rescan btrfs_work_helper
   Call Trace:
    <TASK>
    __dump_stack lib/dump_stack.c:88 [inline]
    dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
    print_address_description mm/kasan/report.c:364 [inline]
    print_report+0x163/0x540 mm/kasan/report.c:475
    kasan_report+0x175/0x1b0 mm/kasan/report.c:588
    __list_del_entry_valid_or_report+0x2f/0x130 lib/list_debug.c:49
    __list_del_entry_valid include/linux/list.h:124 [inline]
    __list_del_entry include/linux/list.h:215 [inline]
    list_del_init include/linux/list.h:287 [inline]
    qgroup_iterator_nested_clean fs/btrfs/qgroup.c:2623 [inline]
    btrfs_qgroup_account_extent+0x18b/0x1150 fs/btrfs/qgroup.c:2883
    qgroup_rescan_leaf fs/btrfs/qgroup.c:3543 [inline]
    btrfs_qgroup_rescan_worker+0x1078/0x1c60 fs/btrfs/qgroup.c:3604
    btrfs_work_helper+0x37c/0xbd0 fs/btrfs/async-thread.c:315
    process_one_work kernel/workqueue.c:2630 [inline]
    process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
    worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
    kthread+0x2d3/0x370 kernel/kthread.c:388
    ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
    ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
    </TASK>

   Allocated by task 6355:
    kasan_save_stack mm/kasan/common.c:45 [inline]
    kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
    ____kasan_kmalloc mm/kasan/common.c:374 [inline]
    __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383
    kmalloc include/linux/slab.h:600 [inline]
    kzalloc include/linux/slab.h:721 [inline]
    btrfs_quota_enable+0xee9/0x2060 fs/btrfs/qgroup.c:1209
    btrfs_ioctl_quota_ctl+0x143/0x190 fs/btrfs/ioctl.c:3705
    vfs_ioctl fs/ioctl.c:51 [inline]
    __do_sys_ioctl fs/ioctl.c:871 [inline]
    __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:857
    do_syscall_x64 arch/x86/entry/common.c:51 [inline]
    do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
    entry_SYSCALL_64_after_hwframe+0x63/0x6b

   Freed by task 6355:
    kasan_save_stack mm/kasan/common.c:45 [inline]
    kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
    kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
    ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
    kasan_slab_free include/linux/kasan.h:164 [inline]
    slab_free_hook mm/slub.c:1800 [inline]
    slab_free_freelist_hook mm/slub.c:1826 [inline]
    slab_free mm/slub.c:3809 [inline]
    __kmem_cache_free+0x263/0x3a0 mm/slub.c:3822
    btrfs_remove_qgroup+0x764/0x8c0 fs/btrfs/qgroup.c:1787
    btrfs_ioctl_qgroup_create+0x185/0x1e0 fs/btrfs/ioctl.c:3811
    vfs_ioctl fs/ioctl.c:51 [inline]
    __do_sys_ioctl fs/ioctl.c:871 [inline]
    __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:857
    do_syscall_x64 arch/x86/entry/common.c:51 [inline]
    do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
    entry_SYSCALL_64_after_hwframe+0x63/0x6b

   Last potentially related work creation:
    kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
    __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492
    __call_rcu_common kernel/rcu/tree.c:2667 [inline]
    call_rcu+0x167/0xa70 kernel/rcu/tree.c:2781
    kthread_worker_fn+0x4ba/0xa90 kernel/kthread.c:823
    kthread+0x2d3/0x370 kernel/kthread.c:388
    ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
    ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

   Second to last potentially related work creation:
    kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
    __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492
    __call_rcu_common kernel/rcu/tree.c:2667 [inline]
    call_rcu+0x167/0xa70 kernel/rcu/tree.c:2781
    kthread_worker_fn+0x4ba/0xa90 kernel/kthread.c:823
    kthread+0x2d3/0x370 kernel/kthread.c:388
    ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
    ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

   The buggy address belongs to the object at ffff888027e42000
    which belongs to the cache kmalloc-512 of size 512
   The buggy address is located 176 bytes inside of
    freed 512-byte region [ffff888027e42000, ffff888027e42200)

   The buggy address belongs to the physical page:
   page:ffffea00009f9000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27e40
   head:ffffea00009f9000 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
   flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
   page_type: 0xffffffff()
   raw: 00fff00000000840 ffff888012c41c80 ffffea0000a5ba00 dead000000000002
   raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
   page dumped because: kasan: bad access detected
   page_owner tracks the page as allocated
   page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4514, tgid 4514 (udevadm), ts 24598439480, free_ts 23755696267
    set_page_owner include/linux/page_owner.h:31 [inline]
    post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
    prep_new_page mm/page_alloc.c:1543 [inline]
    get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
    __alloc_pages+0x255/0x670 mm/page_alloc.c:4426
    alloc_slab_page+0x6a/0x160 mm/slub.c:1870
    allocate_slab mm/slub.c:2017 [inline]
    new_slab+0x84/0x2f0 mm/slub.c:2070
    ___slab_alloc+0xc85/0x1310 mm/slub.c:3223
    __slab_alloc mm/slub.c:3322 [inline]
    __slab_alloc_node mm/slub.c:3375 [inline]
    slab_alloc_node mm/slub.c:3468 [inline]
    __kmem_cache_alloc_node+0x19d/0x270 mm/slub.c:3517
    kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1098
    kmalloc include/linux/slab.h:600 [inline]
    kzalloc include/linux/slab.h:721 [inline]
    kernfs_fop_open+0x3e7/0xcc0 fs/kernfs/file.c:670
    do_dentry_open+0x8fd/0x1590 fs/open.c:948
    do_open fs/namei.c:3622 [inline]
    path_openat+0x2845/0x3280 fs/namei.c:3779
    do_filp_open+0x234/0x490 fs/namei.c:3809
    do_sys_openat2+0x13e/0x1d0 fs/open.c:1440
    do_sys_open fs/open.c:1455 [inline]
    __do_sys_openat fs/open.c:1471 [inline]
    __se_sys_openat fs/open.c:1466 [inline]
    __x64_sys_openat+0x247/0x290 fs/open.c:1466
    do_syscall_x64 arch/x86/entry/common.c:51 [inline]
    do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
    entry_SYSCALL_64_after_hwframe+0x63/0x6b
   page last free stack trace:
    reset_page_owner include/linux/page_owner.h:24 [inline]
    free_pages_prepare mm/page_alloc.c:1136 [inline]
    free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
    free_unref_page+0x37/0x3f0 mm/page_alloc.c:2405
    discard_slab mm/slub.c:2116 [inline]
    __unfreeze_partials+0x1dc/0x220 mm/slub.c:2655
    put_cpu_partial+0x17b/0x250 mm/slub.c:2731
    __slab_free+0x2b6/0x390 mm/slub.c:3679
    qlink_free mm/kasan/quarantine.c:166 [inline]
    qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:185
    kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
    __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
    kasan_slab_alloc include/linux/kasan.h:188 [inline]
    slab_post_alloc_hook+0x67/0x3d0 mm/slab.h:762
    slab_alloc_node mm/slub.c:3478 [inline]
    slab_alloc mm/slub.c:3486 [inline]
    __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
    kmem_cache_alloc+0x104/0x2c0 mm/slub.c:3502
    getname_flags+0xbc/0x4f0 fs/namei.c:140
    do_sys_openat2+0xd2/0x1d0 fs/open.c:1434
    do_sys_open fs/open.c:1455 [inline]
    __do_sys_openat fs/open.c:1471 [inline]
    __se_sys_openat fs/open.c:1466 [inline]
    __x64_sys_openat+0x247/0x290 fs/open.c:1466
    do_syscall_x64 arch/x86/entry/common.c:51 [inline]
    do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
    entry_SYSCALL_64_after_hwframe+0x63/0x6b

   Memory state around the buggy address:
    ffff888027e41f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
    ffff888027e42000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
   >ffff888027e42080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
    ffff888027e42100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
    ffff888027e42180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb

Reported-by: syzbot+e0b615318f8fcfc01ceb@syzkaller.appspotmail.com
Fixes: dce28769a3 ("btrfs: qgroup: use qgroup_iterator_nested to in qgroup_update_refcnt()")
CC: stable@vger.kernel.org # 6.6
Link: https://lore.kernel.org/linux-btrfs/00000000000091a5b2060936bf6d@google.com/
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2023-11-09 14:01:54 +01:00
Diogo Ivo
83b9dda8af net: ti: icss-iep: fix setting counter value
Currently icss_iep_set_counter() writes the upper 32-bits of the
counter value to both the lower and upper counter registers, so
fix this by writing the appropriate value to the lower register.

Fixes: c1e0230eea ("net: ti: icss-iep: Add IEP driver")
Signed-off-by: Diogo Ivo <diogo.ivo@siemens.com>
Link: https://lore.kernel.org/r/20231107120037.1513546-1-diogo.ivo@siemens.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-11-09 13:15:40 +01:00
Takashi Iwai
3e3ab468eb ASoC: One more fix for the merge window
One additional driver fix that came in during the merge window.
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Merge tag 'asoc-fix-v6.7-merge-window-2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: One more fix for the merge window

One additional driver fix that came in during the merge window.
2023-11-09 12:37:03 +01:00
Palmer Dabbelt
f9a619eb60
Merge patch series "Linux RISC-V AIA Preparatory Series"
These two  ended up in the AIA series, but they're really independent
improvements.

* b4-shazam-merge:
  of: property: Add fw_devlink support for msi-parent
  RISC-V: Don't fail in riscv_of_parent_hartid() for disabled HARTs

Link: https://lore.kernel.org/r/20231027154254.355853-1-apatel@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-11-08 18:57:17 -08:00
Anup Patel
c5e4ce9db6
of: property: Add fw_devlink support for msi-parent
This allows fw_devlink to create device links between consumers of
a MSI and the supplier of the MSI.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20231027154254.355853-3-apatel@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-11-08 18:57:15 -08:00
Anup Patel
c4676f8dc1
RISC-V: Don't fail in riscv_of_parent_hartid() for disabled HARTs
The riscv_of_processor_hartid() used by riscv_of_parent_hartid() fails
for HARTs disabled in the DT. This results in the following warning
thrown by the RISC-V INTC driver for the E-core on SiFive boards:

[    0.000000] riscv-intc: unable to find hart id for /cpus/cpu@0/interrupt-controller

The riscv_of_parent_hartid() is only expected to read the hartid
from the DT so we directly call of_get_cpu_hwid() instead of calling
riscv_of_processor_hartid().

Fixes: ad635e723e ("riscv: cpu: Add 64bit hartid support on RV64")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20231027154254.355853-2-apatel@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-11-08 18:57:14 -08:00
Neil Armstrong
e439e4a62a scsi: ufs: qcom-ufs: dt-bindings: Document the SM8650 UFS Controller
Document the UFS Controller on the SM8650 Platform.

Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231030-topic-sm8650-upstream-bindings-ufs-v3-1-a96364463fd5@linaro.org
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-08 21:50:37 -05:00
Edward Adam Davis
1bea2c3e6d ptp: fix corrupted list in ptp_open
There is no lock protection when writing ptp->tsevqs in ptp_open() and
ptp_release(), which can cause data corruption, use spin lock to avoid this
issue.

Moreover, ptp_release() should not be used to release the queue in ptp_read(),
and it should be deleted altogether.

Acked-by: Richard Cochran <richardcochran@gmail.com>
Reported-and-tested-by: syzbot+df3f3ef31f60781fa911@syzkaller.appspotmail.com
Fixes: 8f5de6fb24 ("ptp: support multiple timestamp event readers")
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Link: https://lore.kernel.org/r/tencent_CD19564FFE8DA8A5918DFE92325D92DD8107@qq.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 18:47:07 -08:00
Edward Adam Davis
b714ca2ccf ptp: ptp_read should not release queue
Firstly, queue is not the memory allocated in ptp_read;
Secondly, other processes may block at ptp_read and wait for conditions to be
met to perform read operations.

Acked-by: Richard Cochran <richardcochran@gmail.com>
Reported-and-tested-by: syzbot+df3f3ef31f60781fa911@syzkaller.appspotmail.com
Fixes: 8f5de6fb24 ("ptp: support multiple timestamp event readers")
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Link: https://lore.kernel.org/r/tencent_18747D76F1675A3C633772960237544AAA09@qq.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 18:47:07 -08:00
Mike Christie
3b83486399 scsi: sd: Fix sshdr use in sd_suspend_common()
If scsi_execute_cmd() returns < 0, it doesn't initialize the sshdr, so we
shouldn't access the sshdr. If it returns 0, then the cmd executed
successfully, so there is no need to check the sshdr. sd_sync_cache() will
only access the sshdr if it's been setup because it calls
scsi_status_is_check_condition() before accessing it. However, the
sd_sync_cache() caller, sd_suspend_common(), does not check.

sd_suspend_common() is only checking for ILLEGAL_REQUEST which it's using
to determine if the command is supported. If it's not it just ignores the
error. So to fix its sshdr use this patch just moves that check to
sd_sync_cache() where it converts ILLEGAL_REQUEST to success/0.
sd_suspend_common() was ignoring that error and sd_shutdown() doesn't check
for errors so there will be no behavior changes.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20231106231304.5694-2-michael.christie@oracle.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-08 21:46:58 -05:00
Jakub Kicinski
9b818a340c Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2023-11-06 (ice)

This series contains updates to ice driver only.

Dave removes SR-IOV LAG attribute for only the interface being disabled
to allow for proper unwinding of all interfaces.

Michal Schmidt changes some LAG allocations from GFP_KERNEL to GFP_ATOMIC
due to non-allowed sleeping.

Aniruddha and Marcin fix redirection and drop rules for switchdev by
properly setting and marking egress/ingress type.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: Fix VF-VF direction matching in drop rule in switchdev
  ice: Fix VF-VF filter rules in switchdev mode
  ice: lag: in RCU, use atomic allocation
  ice: Fix SRIOV LAG disable on non-compliant aggregate
====================

Link: https://lore.kernel.org/r/20231107004844.655549-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 18:43:52 -08:00
Dan Carpenter
037fbd3fcf scsi: scsi_debug: Delete some bogus error checking
Smatch complains that "dentry" is never initialized.  These days everyone
initializes all their stack variables to zero so this means that it will
trigger a warning every time this function is run.

Really, debugfs functions are not supposed to be checked for errors in
normal code.  For example, if we updated this code to check the correct
variable then it would print a warning if CONFIG_DEBUGFS was disabled.  We
don't want that.  Just delete the check.

Fixes: f084fe52c6 ("scsi: scsi_debug: Add debugfs interface to fail target reset")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/c602c9ad-5e35-4e18-a47f-87ed956a9ec2@moroto.mountain
Reviewed-by: Wenchao Hao <haowenchao2@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-08 21:42:26 -05:00
Dan Carpenter
860c3d03bb scsi: scsi_debug: Fix some bugs in sdebug_error_write()
There are two bug in this code:

 1) If count is zero, then it will lead to a NULL dereference.  The
    kmalloc() will successfully allocate zero bytes and the test for "if
    (buf[0] == '-')" will read beyond the end of the zero size buffer and
    Oops.

 2) The code does not ensure that the user's string is properly NUL
    terminated which could lead to a read overflow.

Fixes: a9996d722b ("scsi: scsi_debug: Add interface to manage error injection for a single device")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/7733643d-e102-4581-8d29-769472011c97@moroto.mountain
Reviewed-by: Wenchao Hao <haowenchao2@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-08 21:42:26 -05:00
Peter Wang
27900d7119 scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR
If command timeout happens and cq complete IRQ is raised at the same time,
ufshcd_mcq_abort clears lprb->cmd and a NULL pointer deref happens in the
ISR. Error log:

ufshcd_abort: Device abort task at tag 18
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000108
pc : [0xffffffe27ef867ac] scsi_dma_unmap+0xc/0x44
lr : [0xffffffe27f1b898c] ufshcd_release_scsi_cmd+0x24/0x114

Fixes: f1304d4420 ("scsi: ufs: mcq: Added ufshcd_mcq_abort()")
Cc: stable@vger.kernel.org
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20231106075117.8995-1-peter.wang@mediatek.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-08 21:40:41 -05:00
Naomi Chu
defde5a50d scsi: ufs: core: Expand MCQ queue slot to DeviceQueueDepth + 1
The UFSHCI 4.0 specification mandates that there should always be at least
one empty slot in each queue for distinguishing between full and empty
states. Enlarge 'hwq->max_entries' to 'DeviceQueueDepth + 1' to allow
UFSHCI 4.0 controllers to fully utilize MCQ queue slots.

Fixes: 4682abfae2 ("scsi: ufs: core: mcq: Allocate memory for MCQ mode")
Signed-off-by: Naomi Chu <naomi.chu@mediatek.com>
Link: https://lore.kernel.org/r/20231102052426.12006-2-naomi.chu@mediatek.com
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Chun-Hung <chun-hung.wu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-08 21:35:07 -05:00
Quinn Tran
19597cad64 scsi: qla2xxx: Fix system crash due to bad pointer access
User experiences system crash when running AER error injection.  The
perturbation causes the abort-all-I/O path to trigger. The driver assumes
all I/O on this path is FCP only. If there is both NVMe & FCP traffic, a
system crash happens. Add additional check to see if I/O is FCP or not
before access.

PID: 999019  TASK: ff35d769f24722c0  CPU: 53  COMMAND: "kworker/53:1"
 0 [ff3f78b964847b58] machine_kexec at ffffffffae86973d
 1 [ff3f78b964847ba8] __crash_kexec at ffffffffae9be29d
 2 [ff3f78b964847c70] crash_kexec at ffffffffae9bf528
 3 [ff3f78b964847c78] oops_end at ffffffffae8282ab
 4 [ff3f78b964847c98] exc_page_fault at ffffffffaf2da502
 5 [ff3f78b964847cc0] asm_exc_page_fault at ffffffffaf400b62
   [exception RIP: qla2x00_abort_srb+444]
   RIP: ffffffffc07b5f8c  RSP: ff3f78b964847d78  RFLAGS: 00010046
   RAX: 0000000000000282  RBX: ff35d74a0195a200  RCX: ff35d76886fd03a0
   RDX: 0000000000000001  RSI: ffffffffc07c5ec8  RDI: ff35d74a0195a200
   RBP: ff35d76913d22080   R8: ff35d7694d103200   R9: ff35d7694d103200
   R10: 0000000100000000  R11: ffffffffb05d6630  R12: 0000000000010000
   R13: ff3f78b964847df8  R14: ff35d768d8754000  R15: ff35d768877248e0
   ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 6 [ff3f78b964847d70] qla2x00_abort_srb at ffffffffc07b5f84 [qla2xxx]
 7 [ff3f78b964847de0] __qla2x00_abort_all_cmds at ffffffffc07b6238 [qla2xxx]
 8 [ff3f78b964847e38] qla2x00_abort_all_cmds at ffffffffc07ba635 [qla2xxx]
 9 [ff3f78b964847e58] qla2x00_terminate_rport_io at ffffffffc08145eb [qla2xxx]
10 [ff3f78b964847e70] fc_terminate_rport_io at ffffffffc045987e [scsi_transport_fc]
11 [ff3f78b964847e88] process_one_work at ffffffffae914f15
12 [ff3f78b964847ed0] worker_thread at ffffffffae9154c0
13 [ff3f78b964847f10] kthread at ffffffffae91c456
14 [ff3f78b964847f50] ret_from_fork at ffffffffae8036ef

Cc: stable@vger.kernel.org
Fixes: f45bca8c50 ("scsi: qla2xxx: Fix double scsi_done for abort path")
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20231030064912.37912-1-njavali@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-08 21:32:41 -05:00
Eric Dumazet
f1a3b283f8 net_sched: sch_fq: better validate TCA_FQ_WEIGHTS and TCA_FQ_PRIOMAP
syzbot was able to trigger the following report while providing
too small TCA_FQ_WEIGHTS attribute [1]

Fix is to use NLA_POLICY_EXACT_LEN() to ensure user space
provided correct sizes.

Apply the same fix to TCA_FQ_PRIOMAP.

[1]
BUG: KMSAN: uninit-value in fq_load_weights net/sched/sch_fq.c:960 [inline]
BUG: KMSAN: uninit-value in fq_change+0x1348/0x2fe0 net/sched/sch_fq.c:1071
fq_load_weights net/sched/sch_fq.c:960 [inline]
fq_change+0x1348/0x2fe0 net/sched/sch_fq.c:1071
fq_init+0x68e/0x780 net/sched/sch_fq.c:1159
qdisc_create+0x12f3/0x1be0 net/sched/sch_api.c:1326
tc_modify_qdisc+0x11ef/0x2c20
rtnetlink_rcv_msg+0x16a6/0x1840 net/core/rtnetlink.c:6558
netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2545
rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6576
netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
netlink_unicast+0xf47/0x1250 net/netlink/af_netlink.c:1368
netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x9c2/0xd60 net/socket.c:2588
___sys_sendmsg+0x28d/0x3c0 net/socket.c:2642
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2680 [inline]
__se_sys_sendmsg net/socket.c:2678 [inline]
__x64_sys_sendmsg+0x307/0x490 net/socket.c:2678
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523
kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560
__alloc_skb+0x318/0x740 net/core/skbuff.c:651
alloc_skb include/linux/skbuff.h:1286 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline]
netlink_sendmsg+0xb34/0x13d0 net/netlink/af_netlink.c:1885
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x9c2/0xd60 net/socket.c:2588
___sys_sendmsg+0x28d/0x3c0 net/socket.c:2642
__sys_sendmsg net/socket.c:2671 [inline]
__do_sys_sendmsg net/socket.c:2680 [inline]
__se_sys_sendmsg net/socket.c:2678 [inline]
__x64_sys_sendmsg+0x307/0x490 net/socket.c:2678
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b

CPU: 1 PID: 5001 Comm: syz-executor300 Not tainted 6.6.0-syzkaller-12401-g8f6f76a6a29f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023

Fixes: 29f834aa32 ("net_sched: sch_fq: add 3 bands and WRR scheduling")
Fixes: 49e7265fd0 ("net_sched: sch_fq: add TCA_FQ_WEIGHTS attribute")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jamal Hadi Salim<jhs@mojatatu.com>
Link: https://lore.kernel.org/r/20231107160440.1992526-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 18:30:21 -08:00
Jakub Kicinski
09699f1935 Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2023-11-06 (i40e)

This series contains updates to i40e driver only.

Ivan Vecera resolves a couple issues with devlink; removing a call to
devlink_port_type_clear() and ensuring devlink port is unregistered
after the net device.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  i40e: Fix devlink port unregistering
  i40e: Do not call devlink_port_type_clear()
====================

Link: https://lore.kernel.org/r/20231107003600.653796-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 18:20:13 -08:00
Jakub Kicinski
31356547e3 net: kcm: fill in MODULE_DESCRIPTION()
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().

Link: https://lore.kernel.org/r/20231108020305.537293-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 18:17:44 -08:00
Jakub Kicinski
0613736e8a netfilter pull request 23-11-08
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Merge tag 'nf-23-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

1) Add missing netfilter modules description to fix W=1, from Florian Westphal.

2) Fix catch-all element GC with timeout when use with the pipapo set
   backend, this remained broken since I tried to fix it this summer,
   then another attempt to fix it recently.

3) Add missing IPVS modules descriptions to fix W=1, also from Florian.

4) xt_recent allocated a too small buffer to store an IPv4-mapped IPv6
   address which can be parsed by in6_pton(), from Maciej Zenczykowski.
   Broken for many releases.

5) Skip IPv4-mapped IPv6, IPv4-compat IPv6, site/link local scoped IPv6
   addressses to set up IPv6 NAT redirect, also from Florian. This is
   broken since 2012.

* tag 'nf-23-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: nat: fix ipv6 nat redirect with mapped and scoped addresses
  netfilter: xt_recent: fix (increase) ipv6 literal buffer length
  ipvs: add missing module descriptions
  netfilter: nf_tables: remove catchall element in GC sync path
  netfilter: add missing module descriptions
====================

Link: https://lore.kernel.org/r/20231108155802.84617-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 18:15:00 -08:00
Jakub Kicinski
942b8b38de bpf-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2023-11-08

We've added 16 non-merge commits during the last 6 day(s) which contain
a total of 30 files changed, 341 insertions(+), 130 deletions(-).

The main changes are:

1) Fix a BPF verifier issue in precision tracking for BPF_ALU | BPF_TO_BE |
   BPF_END where the source register was incorrectly marked as precise,
   from Shung-Hsi Yu.

2) Fix a concurrency issue in bpf_timer where the former could still have
   been alive after an application releases or unpins the map, from Hou Tao.

3) Fix a BPF verifier issue where immediates are incorrectly cast to u32
   before being spilled and therefore losing sign information, from Hao Sun.

4) Fix a misplaced BPF_TRACE_ITER in check_css_task_iter_allowlist which
   incorrectly compared bpf_prog_type with bpf_attach_type, from Chuyi Zhou.

5) Add __bpf_hook_{start,end} as well as __bpf_kfunc_{start,end}_defs macros,
   migrate all BPF-related __diag callsites over to it, and add a new
   __diag_ignore_all for -Wmissing-declarations to the macros to address
   recent build warnings, from Dave Marchevsky.

6) Fix broken BPF selftest build of xdp_hw_metadata test on architectures
   where char is not signed, from Björn Töpel.

7) Fix test_maps selftest to properly use LIBBPF_OPTS() macro to initialize
   the bpf_map_create_opts, from Andrii Nakryiko.

8) Fix bpffs selftest to avoid unmounting /sys/kernel/debug as it may have
   been mounted and used by other applications already, from Manu Bretelle.

9) Fix a build issue without CONFIG_CGROUPS wrt css_task open-coded
   iterators, from Matthieu Baerts.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  selftests/bpf: get trusted cgrp from bpf_iter__cgroup directly
  bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg
  selftests/bpf: Fix broken build where char is unsigned
  selftests/bpf: precision tracking test for BPF_NEG and BPF_END
  bpf: Fix precision tracking for BPF_ALU | BPF_TO_BE | BPF_END
  selftests/bpf: Add test for using css_task iter in sleepable progs
  selftests/bpf: Add tests for css_task iter combining with cgroup iter
  bpf: Relax allowlist for css_task iter
  selftests/bpf: fix test_maps' use of bpf_map_create_opts
  bpf: Check map->usercnt after timer->timer is assigned
  bpf: Add __bpf_hook_{start,end} macros
  bpf: Add __bpf_kfunc_{start,end}_defs macros
  selftests/bpf: fix test_bpffs
  selftests/bpf: Add test for immediate spilled to stack
  bpf: Fix check_stack_write_fixed_off() to correctly spill imm
  bpf: fix compilation error without CGROUPS
====================

Link: https://lore.kernel.org/r/20231108132448.1970-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 17:56:14 -08:00
Vlad Buslov
9bc64bd0cd net/sched: act_ct: Always fill offloading tuple iifidx
Referenced commit doesn't always set iifidx when offloading the flow to
hardware. Fix the following cases:

- nf_conn_act_ct_ext_fill() is called before extension is created with
nf_conn_act_ct_ext_add() in tcf_ct_act(). This can cause rule offload with
unspecified iifidx when connection is offloaded after only single
original-direction packet has been processed by tc data path. Always fill
the new nf_conn_act_ct_ext instance after creating it in
nf_conn_act_ct_ext_add().

- Offloading of unidirectional UDP NEW connections is now supported, but ct
flow iifidx field is not updated when connection is promoted to
bidirectional which can result reply-direction iifidx to be zero when
refreshing the connection. Fill in the extension and update flow iifidx
before calling flow_offload_refresh().

Fixes: 9795ded7f9 ("net/sched: act_ct: Fill offloading tuple iifidx")
Reviewed-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 6a9bad0069 ("net/sched: act_ct: offload UDP NEW connections")
Link: https://lore.kernel.org/r/20231103151410.764271-1-vladbu@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-08 17:47:08 -08:00
Kees Cook
1ee60356c2 gcc-plugins: randstruct: Only warn about true flexible arrays
The randstruct GCC plugin tried to discover "fake" flexible arrays
to issue warnings about them in randomized structs. In the future
LSM overhead reduction series, it would be legal to have a randomized
struct with a 1-element array, and this should _not_ be treated as a
flexible array, especially since commit df8fc4e934 ("kbuild: Enable
-fstrict-flex-arrays=3"). Disable the 0-sized and 1-element array
discovery logic in the plugin, but keep the "true" flexible array check.

Cc: KP Singh <kpsingh@kernel.org>
Cc: linux-hardening@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311021532.iBwuZUZ0-lkp@intel.com/
Fixes: df8fc4e934 ("kbuild: Enable -fstrict-flex-arrays=3")
Reviewed-by: Bill Wendling <morbo@google.com>
Acked-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20231104204334.work.160-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2023-11-08 14:18:57 -08:00
Linus Torvalds
6bc986ab83 NFS client updates for Linux 6.7
Highlights include:
 
 Bugfixes:
  - SUNRPC: A fix to re-probe the target RPC port after an ECONNRESET error
  - SUNRPC: Handle allocation errors from rpcb_call_async()
  - SUNRPC: Fix a use-after-free condition in rpc_pipefs
  - SUNRPC: fix up various checks for timeouts
  - NFSv4.1: Handle NFS4ERR_DELAY errors during session trunking
  - NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
  - NFSv4: Ensure that we test all delegations when the server notifies
    us that it may have revoked some of them
 
 Features:
  - Allow knfsd processes to break out of NFS4ERR_DELAY loops when
    re-exporting NFSv4.x by setting appropriate values for the
    'delay_retrans' module parameter.
  - nfs: Convert nfs_symlink() to use a folio
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Merge tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Bugfixes:

   - SUNRPC:
       - re-probe the target RPC port after an ECONNRESET error
       - handle allocation errors from rpcb_call_async()
       - fix a use-after-free condition in rpc_pipefs
       - fix up various checks for timeouts

   - NFSv4.1:
       - Handle NFS4ERR_DELAY errors during session trunking
       - fix SP4_MACH_CRED protection for pnfs IO

   - NFSv4:
       - Ensure that we test all delegations when the server notifies
         us that it may have revoked some of them

  Features:

   - Allow knfsd processes to break out of NFS4ERR_DELAY loops when
     re-exporting NFSv4.x by setting appropriate values for the
     'delay_retrans' module parameter

   - nfs: Convert nfs_symlink() to use a folio"

* tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: Convert nfs_symlink() to use a folio
  SUNRPC: Fix RPC client cleaned up the freed pipefs dentries
  NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
  SUNRPC: Add an IS_ERR() check back to where it was
  NFSv4.1: fix handling NFS4ERR_DELAY when testing for session trunking
  nfs41: drop dependency between flexfiles layout driver and NFSv3 modules
  NFSv4: fairly test all delegations on a SEQ4_ revocation
  SUNRPC: SOFTCONN tasks should time out when on the sending list
  SUNRPC: Force close the socket when a hard error is reported
  SUNRPC: Don't skip timeout checks in call_connect_status()
  SUNRPC: ECONNRESET might require a rebind
  NFSv4/pnfs: Allow layoutget to return EAGAIN for softerr mounts
  NFSv4: Add a parameter to limit the number of retries after NFS4ERR_DELAY
2023-11-08 13:39:16 -08:00
Linus Torvalds
67c0afb642 Description for this pull request:
- Fix an issue that exfat timestamps are not updated caused by
     new timestamp accessor function patch.
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Merge tag 'exfat-for-6.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat

Pull exfat updates from Namjae Jeon:

 - Fix an issue that exfat timestamps are not updated caused by new
   timestamp accessor function patch

* tag 'exfat-for-6.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
  exfat: fix ctime is not updated
  exfat: fix setting uninitialized time to ctime/atime
2023-11-08 13:33:47 -08:00
Linus Torvalds
34f7632627 New code for 6.7:
* Realtime device subsystem
     - Cleanup usage of xfs_rtblock_t and xfs_fsblock_t data types.
     - Replace open coded conversions between rt blocks and rt extents with
       calls to static inline helpers.
     - Replace open coded realtime geometry compuation and macros with helper
       functions.
     - CPU usage optimizations for realtime allocator.
     - Misc. Bug fixes associated with Realtime device.
   * Allow read operations to execute while an FICLONE ioctl is being serviced.
   * Misc. bug fixes
     - Alert user when xfs_droplink() encounters an inode with a link count of zero.
     - Handle the case where the allocator could return zero extents when
       servicing an fallocate request.
 
 Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs updates from Chandan Babu:

 - Realtime device subsystem:
    - Cleanup usage of xfs_rtblock_t and xfs_fsblock_t data types
    - Replace open coded conversions between rt blocks and rt extents
      with calls to static inline helpers
    - Replace open coded realtime geometry compuation and macros with
      helper functions
    - CPU usage optimizations for realtime allocator
    - Misc bug fixes associated with Realtime device

 - Allow read operations to execute while an FICLONE ioctl is being
   serviced

 - Misc bug fixes:
    - Alert user when xfs_droplink() encounters an inode with a link
      count of zero
    - Handle the case where the allocator could return zero extents when
      servicing an fallocate request

* tag 'xfs-6.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (40 commits)
  xfs: allow read IO and FICLONE to run concurrently
  xfs: handle nimaps=0 from xfs_bmapi_write in xfs_alloc_file_space
  xfs: introduce protection for drop nlink
  xfs: don't look for end of extent further than necessary in xfs_rtallocate_extent_near()
  xfs: don't try redundant allocations in xfs_rtallocate_extent_near()
  xfs: limit maxlen based on available space in xfs_rtallocate_extent_near()
  xfs: return maximum free size from xfs_rtany_summary()
  xfs: invert the realtime summary cache
  xfs: simplify rt bitmap/summary block accessor functions
  xfs: simplify xfs_rtbuf_get calling conventions
  xfs: cache last bitmap block in realtime allocator
  xfs: use accessor functions for summary info words
  xfs: consolidate realtime allocation arguments
  xfs: create helpers for rtsummary block/wordcount computations
  xfs: use accessor functions for bitmap words
  xfs: create helpers for rtbitmap block/wordcount computations
  xfs: create a helper to handle logging parts of rt bitmap/summary blocks
  xfs: convert rt summary macros to helpers
  xfs: convert open-coded xfs_rtword_t pointer accesses to helper
  xfs: remove XFS_BLOCKWSIZE and XFS_BLOCKWMASK macros
  ...
2023-11-08 13:22:16 -08:00
Konstantin Ryabitsev
6d795e2a7d MAINTAINERS: update lists.linuxfoundation.org migrated lists
The mailman-2 system behind lists.linux[-]foundation.org is being
retired, so the lists are being migrated to lists.linux.dev.

Since both domains belong to LF and setting up proper forwards is
possible, the old addresses will continue to work for a while, but all
new patches should be sent to the new canonical addresses for each list.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-11-08 12:44:27 -08:00
Linus Torvalds
1995a53670 more s390 updates for 6.7 merge window
- Get rid of s390 specific use of two PTEs per 4KB page with complex
   half-used pages tracking. Using full 4KB pages for 2KB PTEs increases
   the memory footprint of page tables but drastically simplify mm code,
   removing a common blocker for common code changes and adaptations
 
 - Simplify and rework "cmma no-dat" handling. This is a follow up
   for recent fixes which prevent potential incorrect guest TLB flushes
 
 - Add perf user stack unwinding as well as USER_STACKTRACE support for
   user space built with -mbackchain compile option
 
 - Add few missing conversion from tlb_remove_table to tlb_remove_ptdesc
 
 - Fix crypto cards vanishing in a secure execution environment due to
   asynchronous errors
 
 - Avoid reporting crypto cards or queues in check-stop state as online
 
 - Fix null-ptr deference in AP bus code triggered by early config change
   via SCLP
 
 - Couple of stability improvements in AP queue interrupt handling
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Merge tag 's390-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Vasily Gorbik:

 - Get rid of s390 specific use of two PTEs per 4KB page with complex
   half-used pages tracking. Using full 4KB pages for 2KB PTEs increases
   the memory footprint of page tables but drastically simplify mm code,
   removing a common blocker for common code changes and adaptations

 - Simplify and rework "cmma no-dat" handling. This is a follow up for
   recent fixes which prevent potential incorrect guest TLB flushes

 - Add perf user stack unwinding as well as USER_STACKTRACE support for
   user space built with -mbackchain compile option

 - Add few missing conversion from tlb_remove_table to tlb_remove_ptdesc

 - Fix crypto cards vanishing in a secure execution environment due to
   asynchronous errors

 - Avoid reporting crypto cards or queues in check-stop state as online

 - Fix null-ptr deference in AP bus code triggered by early config
   change via SCLP

 - Couple of stability improvements in AP queue interrupt handling

* tag 's390-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/mm: make pte_free_tlb() similar to pXd_free_tlb()
  s390/mm: use compound page order to distinguish page tables
  s390/mm: use full 4KB page for 2KB PTE
  s390/cmma: rework no-dat handling
  s390/cmma: move arch_set_page_dat() to header file
  s390/cmma: move set_page_stable() and friends to header file
  s390/cmma: move parsing of cmma kernel parameter to early boot code
  s390/cmma: cleanup inline assemblies
  s390/ap: fix vanishing crypto cards in SE environment
  s390/zcrypt: don't report online if card or queue is in check-stop state
  s390: add USER_STACKTRACE support
  s390/perf: implement perf_callchain_user()
  s390/ap: fix AP bus crash on early config change callback invocation
  s390/ap: re-enable interrupt for AP queues
  s390/ap: rework to use irq info from ap queue status
  s390/mm: add missing conversion to use ptdescs
2023-11-08 12:39:54 -08:00
Ondrej Mosnacek
b36995b860 lsm: fix default return value for inode_getsecctx
-EOPNOTSUPP is the return value that implements a "no-op" hook, not 0.

Without this fix having only the BPF LSM enabled (with no programs
attached) can cause uninitialized variable reads in
nfsd4_encode_fattr(), because the BPF hook returns 0 without touching
the 'ctxlen' variable and the corresponding 'contextlen' variable in
nfsd4_encode_fattr() remains uninitialized, yet being treated as valid
based on the 0 return value.

Cc: stable@vger.kernel.org
Fixes: 98e828a065 ("security: Refactor declaration of LSM hooks")
Reported-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2023-11-08 15:39:42 -05:00
Ondrej Mosnacek
866d648059 lsm: fix default return value for vm_enough_memory
1 is the return value that implements a "no-op" hook, not 0.

Cc: stable@vger.kernel.org
Fixes: 98e828a065 ("security: Refactor declaration of LSM hooks")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2023-11-08 15:39:42 -05:00
Arnd Bergmann
65120498aa stackleak: add declarations for global functions
With -Wmissing-prototypes enabled, the stackleak code produces a couple of
warnings that have no declarations because they are only called from assembler:

stackleak.c:127:25: error: no previous prototype for 'stackleak_erase' [-Werror=missing-prototypes]
stackleak.c:139:25: error: no previous prototype for 'stackleak_erase_on_task_stack' [-Werror=missing-prototypes]
stackleak.c:151:25: error: no previous prototype for 'stackleak_erase_off_task_stack' [-Werror=missing-prototypes]
stackleak.c:159:49: error: no previous prototype for 'stackleak_track_stack' [-Werror=missing-prototypes]

Add declarations to the stackleak header to shut up the warnings.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20231108125843.3806765-7-arnd@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2023-11-08 11:06:50 -08:00
Linus Torvalds
90450a0616 RCU fixes for v6.7
* Fix a lock inversion between scheduler and RCU introduced
   in v6.2-rc4. The scenario could trigger on any user of RCU_NOCB
   (mostly Android and also nohz_full).
 
 * Fix PF_IDLE semantic changes introduced in v6.6-rc3 breaking some
   RCU-Tasks and RCU-Tasks-Trace expectations as to what exactly is
   an idle task. This resulted in potential spurious stalls and
   warnings.
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Merge tag 'rcu-fixes-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks

Pull RCU fixes from Frederic Weisbecker:

 - Fix a lock inversion between scheduler and RCU introduced in
   v6.2-rc4. The scenario could trigger on any user of RCU_NOCB
   (mostly Android but also nohz_full)

 - Fix PF_IDLE semantic changes introduced in v6.6-rc3 breaking
   some RCU-Tasks and RCU-Tasks-Trace expectations as to what
   exactly is an idle task. This resulted in potential spurious
   stalls and warnings.

* tag 'rcu-fixes-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks:
  rcu/tasks-trace: Handle new PF_IDLE semantics
  rcu/tasks: Handle new PF_IDLE semantics
  rcu: Introduce rcu_cpu_online()
  rcu: Break rcu_node_0 --> &rq->__lock order
2023-11-08 09:47:52 -08:00
Linus Torvalds
447cec034b memblock: report failures when memblock_can_resize is not set
Numerous memblock reservations at early boot may exhaust static
 memblock.reserved array and it is unnoticed because most of the callers don't
 check memblock_reserve() return value.
 
 In this case the system will crash later, but the reason is hard to identify.
 
 Replace return of an error with panic() when memblock.reserved is exhausted
 before it can be resized.
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Merge tag 'memblock-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull memblock update from Mike Rapoport:
 "Report failures when memblock_can_resize is not set.

  Numerous memblock reservations at early boot may exhaust static
  memblock.reserved array and it is unnoticed because most of the
  callers don't check memblock_reserve() return value.

  In this case the system will crash later, but the reason is hard to
  identify.

  Replace return of an error with panic() when memblock.reserved is
  exhausted before it can be resized"

* tag 'memblock-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  memblock: report failures when memblock_can_resize is not set
2023-11-08 09:40:13 -08:00
Linus Torvalds
c1ef4df14e kgdb patches for 6.7
Just two patches for you this time!
 
  * During a panic, flush the console before entering kgdb. This makes
    things a little easier to comprehend, especially if an NMI backtrace
    was triggered on all CPUs just before we enter the panic routines.
  * Correcting a couple of misleading (a.k.a. plain wrong) comments.
 
 Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
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Merge tag 'kgdb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux

Pull kgdb updates from Daniel Thompson:
 "Just two patches for you this time!

   - During a panic, flush the console before entering kgdb.

     This makes things a little easier to comprehend, especially if an
     NMI backtrace was triggered on all CPUs just before we enter the
     panic routines

   - Correcting a couple of misleading (a.k.a. plain wrong) comments"

* tag 'kgdb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
  kdb: Corrects comment for kdballocenv
  kgdb: Flush console before entering kgdb on panic
2023-11-08 09:28:38 -08:00
Linus Torvalds
d46392bbf5 RISC-V Patches for the 6.7 Merge Window, Part 1
* Support for cbo.zero in userspace.
 * Support for CBOs on ACPI-based systems.
 * A handful of improvements for the T-Head cache flushing ops.
 * Support for software shadow call stacks.
 * Various cleanups and fixes.
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Merge tag 'riscv-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for cbo.zero in userspace

 - Support for CBOs on ACPI-based systems

 - A handful of improvements for the T-Head cache flushing ops

 - Support for software shadow call stacks

 - Various cleanups and fixes

* tag 'riscv-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (31 commits)
  RISC-V: hwprobe: Fix vDSO SIGSEGV
  riscv: configs: defconfig: Enable configs required for RZ/Five SoC
  riscv: errata: prefix T-Head mnemonics with th.
  riscv: put interrupt entries into .irqentry.text
  riscv: mm: Update the comment of CONFIG_PAGE_OFFSET
  riscv: Using TOOLCHAIN_HAS_ZIHINTPAUSE marco replace zihintpause
  riscv/mm: Fix the comment for swap pte format
  RISC-V: clarify the QEMU workaround in ISA parser
  riscv: correct pt_level name via pgtable_l5/4_enabled
  RISC-V: Provide pgtable_l5_enabled on rv32
  clocksource: timer-riscv: Increase rating of clock_event_device for Sstc
  clocksource: timer-riscv: Don't enable/disable timer interrupt
  lkdtm: Fix CFI_BACKWARD on RISC-V
  riscv: Use separate IRQ shadow call stacks
  riscv: Implement Shadow Call Stack
  riscv: Move global pointer loading to a macro
  riscv: Deduplicate IRQ stack switching
  riscv: VMAP_STACK overflow detection thread-safe
  RISC-V: cacheflush: Initialize CBO variables on ACPI systems
  RISC-V: ACPI: RHCT: Add function to get CBO block sizes
  ...
2023-11-08 09:21:18 -08:00
Rick Edgecombe
31255e072b x86/shstk: Delay signal entry SSP write until after user accesses
When a signal is being delivered, the kernel needs to make accesses to
userspace. These accesses could encounter an access error, in which case
the signal delivery itself will trigger a segfault. Usually this would
result in the kernel killing the process. But in the case of a SEGV signal
handler being configured, the failure of the first signal delivery will
result in *another* signal getting delivered. The second signal may
succeed if another thread has resolved the issue that triggered the
segfault (i.e. a well timed mprotect()/mmap()), or the second signal is
being delivered to another stack (i.e. an alt stack).

On x86, in the non-shadow stack case, all the accesses to userspace are
done before changes to the registers (in pt_regs). The operation is
aborted when an access error occurs, so although there may be writes done
for the first signal, control flow changes for the signal (regs->ip,
regs->sp, etc) are not committed until all the accesses have already
completed successfully. This means that the second signal will be
delivered as if it happened at the time of the first signal. It will
effectively replace the first aborted signal, overwriting the half-written
frame of the aborted signal. So on sigreturn from the second signal,
control flow will resume happily from the point of control flow where the
original signal was delivered.

The problem is, when shadow stack is active, the shadow stack SSP
register/MSR is updated *before* some of the userspace accesses. This
means if the earlier accesses succeed and the later ones fail, the second
signal will not be delivered at the same spot on the shadow stack as the
first one. So on sigreturn from the second signal, the SSP will be
pointing to the wrong location on the shadow stack (off by a frame).

Pengfei privately reported that while using a shadow stack enabled glibc,
the “signal06” test in the LTP test-suite hung. It turns out it is
testing the above described double signal scenario. When this test was
compiled with shadow stack, the first signal pushed a shadow stack
sigframe, then the second pushed another. When the second signal was
handled, the SSP was at the first shadow stack signal frame instead of
the original location. The test then got stuck as the #CP from the twice
incremented SSP was incorrect and generated segfaults in a loop.

Fix this by adjusting the SSP register only after any userspace accesses,
such that there can be no failures after the SSP is adjusted. Do this by
moving the shadow stack sigframe push logic to happen after all other
userspace accesses.

Note, sigreturn (as opposed to the signal delivery dealt with in this
patch) has ordering behavior that could lead to similar failures. The
ordering issues there extend beyond shadow stack to include the alt stack
restoration. Fixing that would require cross-arch changes, and the
ordering today does not cause any known test or apps breakages. So leave
it as is, for now.

[ dhansen: minor changelog/subject tweak ]

Fixes: 05e36022c0 ("x86/shstk: Handle signals for shadow stack")
Reported-by: Pengfei Xu <pengfei.xu@intel.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Cc:stable@vger.kernel.org
Link: https://lore.kernel.org/all/20231107182251.91276-1-rick.p.edgecombe%40intel.com
Link: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/signal/signal06.c
2023-11-08 08:55:37 -08:00
Takashi Iwai
53b5fdb617 ASoC: Fixes for v6.7
A collection of fixes that have come in during the merge window, the
 majority of this is driver specific with one core fix for handling of
 DAPM clock widgets when a name prefix is specified for the card - the
 name should not be applied to the clock name we request from the clock
 API.
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Merge tag 'asoc-fix-v6.7-merge-window' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.7

A collection of fixes that have come in during the merge window, the
majority of this is driver specific with one core fix for handling of
DAPM clock widgets when a name prefix is specified for the card - the
name should not be applied to the clock name we request from the clock
API.
2023-11-08 17:44:06 +01:00
Jens Axboe
37d9486874 nvme fixes for 6.7
- nvme keyring config compile fixes (Hannes and Arnd)
  - fabrics keep alive fixes (Hannes)
  - tcp authentication fixes (Mark)
  - io_uring_cmd error handling fix (Anuj)
  - stale firmware attribute fix (Daniel)
  - tcp memory leak (Christophe)
  - cytpo library usage simplification (Eric)
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Merge tag 'nvme-6.7-2023-11-8' of git://git.infradead.org/nvme into block-6.7

Pull NVMe fixes from Keith:

"nvme fixes for 6.7

 - nvme keyring config compile fixes (Hannes and Arnd)
 - fabrics keep alive fixes (Hannes)
 - tcp authentication fixes (Mark)
 - io_uring_cmd error handling fix (Anuj)
 - stale firmware attribute fix (Daniel)
 - tcp memory leak (Christophe)
 - cytpo library usage simplification (Eric)"

* tag 'nvme-6.7-2023-11-8' of git://git.infradead.org/nvme:
  nvme: keyring: fix conditional compilation
  nvme: common: make keyring and auth separate modules
  nvme: start keep-alive after admin queue setup
  nvme-loop: always quiesce and cancel commands before destroying admin q
  nvme-tcp: avoid open-coding nvme_tcp_teardown_admin_queue()
  nvme-auth: always set valid seq_num in dhchap reply
  nvme-auth: add flag for bi-directional auth
  nvme-auth: auth success1 msg always includes resp
  nvme: fix error-handling for io_uring nvme-passthrough
  nvme: update firmware version after commit
  nvme-tcp: Fix a memory leak
  nvme-auth: use crypto_shash_tfm_digest()
2023-11-08 09:19:16 -07:00
Hannes Reinecke
706add1367 nvme: keyring: fix conditional compilation
The keyring and auth functions can be called from both the host and
the target side and are controlled by Kconfig options for each of the
combinations, but the declarations are controlled by #ifdef checks
on the shared Kconfig symbols.

This leads to link failures in combinations where one of the frontends
is built-in and the other one is a module, and the keyring code
ends up in a module that is not reachable from the builtin code:

ld: drivers/nvme/host/core.o: in function `nvme_core_exit':
core.c:(.exit.text+0x4): undefined reference to `nvme_keyring_exit'
ld: drivers/nvme/host/core.o: in function `nvme_core_init':
core.c:(.init.text+0x94): undefined reference to `nvme_keyring_init

ld: drivers/nvme/host/tcp.o: in function `nvme_tcp_setup_ctrl':
tcp.c:(.text+0x4c18): undefined reference to `nvme_tls_psk_default'

Address this by moving nvme_keyring_init()/nvme_keyring_exit() into
module init/exit functions for the keyring module.

Fixes: be8e82caa6 ("nvme-tcp: enable TLS handshake upcall")
Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2023-11-08 08:07:08 -08:00
David Howells
37de5a80e9 cifs: Fix encryption of cleared, but unset rq_iter data buffers
Each smb_rqst struct contains two things: an array of kvecs (rq_iov) that
contains the protocol data for an RPC op and an iterator (rq_iter) that
contains the data payload of an RPC op.  When an smb_rqst is allocated
rq_iter is it always cleared, but we don't set it up unless we're going to
use it.

The functions that determines the size of the ciphertext buffer that will
be needed to encrypt a request, cifs_get_num_sgs(), assumes that rq_iter is
always initialised - and employs user_backed_iter() to check that the
iterator isn't user-backed.  This used to incidentally work, because
->user_backed was set to false because the iterator has never been
initialised, but with commit f1b4cb650b9a0eeba206d8f069fcdc532bfbcd74[1]
which changes user_backed_iter() to determine this based on the iterator
type insted, a warning is now emitted:

        WARNING: CPU: 7 PID: 4584 at fs/smb/client/cifsglob.h:2165 smb2_get_aead_req+0x3fc/0x420 [cifs]
        ...
        RIP: 0010:smb2_get_aead_req+0x3fc/0x420 [cifs]
        ...
         crypt_message+0x33e/0x550 [cifs]
         smb3_init_transform_rq+0x27d/0x3f0 [cifs]
         smb_send_rqst+0xc7/0x160 [cifs]
         compound_send_recv+0x3ca/0x9f0 [cifs]
         cifs_send_recv+0x25/0x30 [cifs]
         SMB2_tcon+0x38a/0x820 [cifs]
         cifs_get_smb_ses+0x69c/0xee0 [cifs]
         cifs_mount_get_session+0x76/0x1d0 [cifs]
         dfs_mount_share+0x74/0x9d0 [cifs]
         cifs_mount+0x6e/0x2e0 [cifs]
         cifs_smb3_do_mount+0x143/0x300 [cifs]
         smb3_get_tree+0x15e/0x290 [cifs]
         vfs_get_tree+0x2d/0xe0
         do_new_mount+0x124/0x340
         __se_sys_mount+0x143/0x1a0

The problem is that rq_iter was never set, so the type is 0 (ie. ITER_UBUF)
which causes user_backed_iter() to return true.  The code doesn't
malfunction because it checks the size of the iterator - which is 0.

Fix cifs_get_num_sgs() to ignore rq_iter if its count is 0, thereby
bypassing the warnings.

It might be better to explicitly initialise rq_iter to a zero-length
ITER_BVEC, say, as it can always be reinitialised later.

Fixes: d08089f649 ("cifs: Change the I/O paths to use an iterator rather than a page list")
Reported-by: Damian Tometzki <damian@riscv-rocks.de>
Closes: https://lore.kernel.org/r/ZUfQo47uo0p2ZsYg@fedora.fritz.box/
Tested-by: Damian Tometzki <damian@riscv-rocks.de>
Cc: stable@vger.kernel.org
cc: Eric Biggers <ebiggers@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f1b4cb650b9a0eeba206d8f069fcdc532bfbcd74 [1]
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2023-11-08 09:54:20 -06:00
Florian Westphal
80abbe8a82 netfilter: nat: fix ipv6 nat redirect with mapped and scoped addresses
The ipv6 redirect target was derived from the ipv4 one, i.e. its
identical to a 'dnat' with the first (primary) address assigned to the
network interface.  The code has been moved around to make it usable
from nf_tables too, but its still the same as it was back when this
was added in 2012.

IPv6, however, has different types of addresses, if the 'wrong' address
comes first the redirection does not work.

In Daniels case, the addresses are:
  inet6 ::ffff:192 ...
  inet6 2a01: ...

... so the function attempts to redirect to the mapped address.

Add more checks before the address is deemed correct:
1. If the packets' daddr is scoped, search for a scoped address too
2. skip tentative addresses
3. skip mapped addresses

Use the first address that appears to match our needs.

Reported-by: Daniel Huhardeaux <tech@tootai.net>
Closes: https://lore.kernel.org/netfilter/71be06b8-6aa0-4cf9-9e0b-e2839b01b22f@tootai.net/
Fixes: 115e23ac78 ("netfilter: ip6tables: add REDIRECT target")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2023-11-08 16:40:30 +01:00
Douglas Anderson
4bb49009e0 Revert "arm64: smp: avoid NMI IPIs with broken MediaTek FW"
This reverts commit a07a594152.

This is no longer needed after the patch ("arm64: Move MediaTek GIC
quirk handling from irqchip to core).

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20231107072651.v2.2.I2c5fa192e767eb3ee233bc28eb60e2f8656c29a6@changeid
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2023-11-08 15:38:47 +00:00
Douglas Anderson
1d816ba168 arm64: Move MediaTek GIC quirk handling from irqchip to core
In commit 44bd78dd2b ("irqchip/gic-v3: Disable pseudo NMIs on
MediaTek devices w/ firmware issues") we added a method for detecting
MediaTek devices with broken firmware and disabled pseudo-NMI. While
that worked, it didn't address the problem at a deep enough level.

The fundamental issue with this broken firmware is that it's not
saving and restoring several important GICR registers. The current
list is believed to be:
* GICR_NUM_IPRIORITYR
* GICR_CTLR
* GICR_ISPENDR0
* GICR_ISACTIVER0
* GICR_NSACR

Pseudo-NMI didn't work because it was the only thing (currently) in
the kernel that relied on the broken registers, so forcing pseudo-NMI
off was an effective fix. However, it could be observed that calling
system_uses_irq_prio_masking() on these systems still returned
"true". That caused confusion and led to the need for
commit a07a594152 ("arm64: smp: avoid NMI IPIs with broken MediaTek
FW"). It's worried that the incorrect value returned by
system_uses_irq_prio_masking() on these systems will continue to
confuse future developers.

Let's fix the issue a little more completely by disabling IRQ
priorities at a deeper level in the kernel. Once we do this we can
revert some of the other bits of code dealing with this quirk.

This includes a partial revert of commit 44bd78dd2b
("irqchip/gic-v3: Disable pseudo NMIs on MediaTek devices w/ firmware
issues"). This isn't a full revert because it leaves some of the
changes to the "quirks" structure around in case future code needs it.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231107072651.v2.1.Ide945748593cffd8ff0feb9ae22b795935b944d6@changeid
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2023-11-08 15:37:29 +00:00
Petr Tesarik
53c87e846e swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC
Limit the free list length to the size of the IO TLB. Transient pool can be
smaller than IO_TLB_SEGSIZE, but the free list is initialized with the
assumption that the total number of slots is a multiple of IO_TLB_SEGSIZE.
As a result, swiotlb_area_find_slots() may allocate slots past the end of
a transient IO TLB buffer.

Reported-by: Niklas Schnelle <schnelle@linux.ibm.com>
Closes: https://lore.kernel.org/linux-iommu/104a8c8fedffd1ff8a2890983e2ec1c26bff6810.camel@linux.ibm.com/
Fixes: 79636caad3 ("swiotlb: if swiotlb is full, fall back to a transient memory pool")
Cc: stable@vger.kernel.org
Signed-off-by: Petr Tesarik <petr.tesarik1@huawei-partners.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2023-11-08 16:27:05 +01:00
Palmer Dabbelt
05942f780a
Merge patch series "riscv: Fix set_memory_XX() and set_direct_map_XX()"
Alexandre Ghiti <alexghiti@rivosinc.com> says:

Those 2 patches fix the set_memory_XX() and set_direct_map_XX() APIs, which
in turn fix STRICT_KERNEL_RWX and memfd_secret(). Those were broken since the
permission changes were not applied to the linear mapping because the linear
mapping is mapped using hugepages and walk_page_range_novma() does not split
such mappings.

To fix that, patch 1 disables PGD mappings in the linear mapping as it is
hard to propagate changes at this level in *all* the page tables, this has the
downside of disabling PMD mapping for sv32 and PUD (1GB) mapping for sv39 in
the linear mapping (for specific kernels, we could add a Kconfig to enable
ARCH_HAS_SET_DIRECT_MAP and STRICT_KERNEL_RWX if needed, I'm pretty sure we'll
discuss that).

patch 2 implements the split of the huge linear mappings so that
walk_page_range_novma() can properly apply the permissions. The whole split is
protected with mmap_sem in write mode, but I'm wondering if that's enough,
any opinion on that is appreciated.

* b4-shazam-merge:
  riscv: Fix set_memory_XX() and set_direct_map_XX() by splitting huge linear mappings
  riscv: Don't use PGD entries for the linear mapping

Link: https://lore.kernel.org/r/20231108075930.7157-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-11-08 07:08:35 -08:00
Alexandre Ghiti
311cd2f6e2
riscv: Fix set_memory_XX() and set_direct_map_XX() by splitting huge linear mappings
When STRICT_KERNEL_RWX is set, any change of permissions on any kernel
mapping (vmalloc/modules/kernel text...etc) should be applied on its
linear mapping alias. The problem is that the riscv kernel uses huge
mappings for the linear mapping and walk_page_range_novma() does not
split those huge mappings.

So this patchset implements such split in order to apply fine-grained
permissions on the linear mapping.

Below is the difference before and after (the first PUD mapping is split
into PTE/PMD mappings):

Before:

---[ Linear mapping ]---
0xffffaf8000080000-0xffffaf8000200000    0x0000000080080000      1536K PTE     D A G . . W R V
0xffffaf8000200000-0xffffaf8077c00000    0x0000000080200000      1914M PMD     D A G . . W R V
0xffffaf8077c00000-0xffffaf8078800000    0x00000000f7c00000        12M PMD     D A G . . . R V
0xffffaf8078800000-0xffffaf8078c00000    0x00000000f8800000         4M PMD     D A G . . W R V
0xffffaf8078c00000-0xffffaf8079200000    0x00000000f8c00000         6M PMD     D A G . . . R V
0xffffaf8079200000-0xffffaf807e600000    0x00000000f9200000        84M PMD     D A G . . W R V
0xffffaf807e600000-0xffffaf807e716000    0x00000000fe600000      1112K PTE     D A G . . W R V
0xffffaf807e717000-0xffffaf807e71a000    0x00000000fe717000        12K PTE     D A G . . W R V
0xffffaf807e71d000-0xffffaf807e71e000    0x00000000fe71d000         4K PTE     D A G . . W R V
0xffffaf807e722000-0xffffaf807e800000    0x00000000fe722000       888K PTE     D A G . . W R V
0xffffaf807e800000-0xffffaf807fe00000    0x00000000fe800000        22M PMD     D A G . . W R V
0xffffaf807fe00000-0xffffaf807ff54000    0x00000000ffe00000      1360K PTE     D A G . . W R V
0xffffaf807ff55000-0xffffaf8080000000    0x00000000fff55000       684K PTE     D A G . . W R V
0xffffaf8080000000-0xffffaf8400000000    0x0000000100000000        14G PUD     D A G . . W R V

After:

---[ Linear mapping ]---
0xffffaf8000080000-0xffffaf8000200000    0x0000000080080000      1536K PTE     D A G . . W R V
0xffffaf8000200000-0xffffaf8077c00000    0x0000000080200000      1914M PMD     D A G . . W R V
0xffffaf8077c00000-0xffffaf8078800000    0x00000000f7c00000        12M PMD     D A G . . . R V
0xffffaf8078800000-0xffffaf8078a00000    0x00000000f8800000         2M PMD     D A G . . W R V
0xffffaf8078a00000-0xffffaf8078c00000    0x00000000f8a00000         2M PTE     D A G . . W R V
0xffffaf8078c00000-0xffffaf8079200000    0x00000000f8c00000         6M PMD     D A G . . . R V
0xffffaf8079200000-0xffffaf807e600000    0x00000000f9200000        84M PMD     D A G . . W R V
0xffffaf807e600000-0xffffaf807e716000    0x00000000fe600000      1112K PTE     D A G . . W R V
0xffffaf807e717000-0xffffaf807e71a000    0x00000000fe717000        12K PTE     D A G . . W R V
0xffffaf807e71d000-0xffffaf807e71e000    0x00000000fe71d000         4K PTE     D A G . . W R V
0xffffaf807e722000-0xffffaf807e800000    0x00000000fe722000       888K PTE     D A G . . W R V
0xffffaf807e800000-0xffffaf807fe00000    0x00000000fe800000        22M PMD     D A G . . W R V
0xffffaf807fe00000-0xffffaf807ff54000    0x00000000ffe00000      1360K PTE     D A G . . W R V
0xffffaf807ff55000-0xffffaf8080000000    0x00000000fff55000       684K PTE     D A G . . W R V
0xffffaf8080000000-0xffffaf8080800000    0x0000000100000000         8M PMD     D A G . . W R V
0xffffaf8080800000-0xffffaf8080af6000    0x0000000100800000      3032K PTE     D A G . . W R V
0xffffaf8080af6000-0xffffaf8080af8000    0x0000000100af6000         8K PTE     D A G . X . R V
0xffffaf8080af8000-0xffffaf8080c00000    0x0000000100af8000      1056K PTE     D A G . . W R V
0xffffaf8080c00000-0xffffaf8081a00000    0x0000000100c00000        14M PMD     D A G . . W R V
0xffffaf8081a00000-0xffffaf8081a40000    0x0000000101a00000       256K PTE     D A G . . W R V
0xffffaf8081a40000-0xffffaf8081a44000    0x0000000101a40000        16K PTE     D A G . X . R V
0xffffaf8081a44000-0xffffaf8081a52000    0x0000000101a44000        56K PTE     D A G . . W R V
0xffffaf8081a52000-0xffffaf8081a54000    0x0000000101a52000         8K PTE     D A G . X . R V
...
0xffffaf809e800000-0xffffaf80c0000000    0x000000011e800000       536M PMD     D A G . . W R V
0xffffaf80c0000000-0xffffaf8400000000    0x0000000140000000        13G PUD     D A G . . W R V

Note that this also fixes memfd_secret() syscall which uses
set_direct_map_invalid_noflush() and set_direct_map_default_noflush() to
remove the pages from the linear mapping. Below is the kernel page table
while a memfd_secret() syscall is running, you can see all the !valid
page table entries in the linear mapping:

...
0xffffaf8082240000-0xffffaf8082241000    0x0000000102240000         4K PTE     D A G . . W R .
0xffffaf8082241000-0xffffaf8082250000    0x0000000102241000        60K PTE     D A G . . W R V
0xffffaf8082250000-0xffffaf8082252000    0x0000000102250000         8K PTE     D A G . . W R .
0xffffaf8082252000-0xffffaf8082256000    0x0000000102252000        16K PTE     D A G . . W R V
0xffffaf8082256000-0xffffaf8082257000    0x0000000102256000         4K PTE     D A G . . W R .
0xffffaf8082257000-0xffffaf8082258000    0x0000000102257000         4K PTE     D A G . . W R V
0xffffaf8082258000-0xffffaf8082259000    0x0000000102258000         4K PTE     D A G . . W R .
0xffffaf8082259000-0xffffaf808225a000    0x0000000102259000         4K PTE     D A G . . W R V
0xffffaf808225a000-0xffffaf808225c000    0x000000010225a000         8K PTE     D A G . . W R .
0xffffaf808225c000-0xffffaf8082266000    0x000000010225c000        40K PTE     D A G . . W R V
0xffffaf8082266000-0xffffaf8082268000    0x0000000102266000         8K PTE     D A G . . W R .
0xffffaf8082268000-0xffffaf8082284000    0x0000000102268000       112K PTE     D A G . . W R V
0xffffaf8082284000-0xffffaf8082288000    0x0000000102284000        16K PTE     D A G . . W R .
0xffffaf8082288000-0xffffaf808229c000    0x0000000102288000        80K PTE     D A G . . W R V
0xffffaf808229c000-0xffffaf80822a0000    0x000000010229c000        16K PTE     D A G . . W R .
0xffffaf80822a0000-0xffffaf80822a5000    0x00000001022a0000        20K PTE     D A G . . W R V
0xffffaf80822a5000-0xffffaf80822a6000    0x00000001022a5000         4K PTE     D A G . . . R V
0xffffaf80822a6000-0xffffaf80822ab000    0x00000001022a6000        20K PTE     D A G . . W R V
...

And when the memfd_secret() fd is released, the linear mapping is
correctly reset:

...
0xffffaf8082240000-0xffffaf80822a5000    0x0000000102240000       404K PTE     D A G . . W R V
0xffffaf80822a5000-0xffffaf80822a6000    0x00000001022a5000         4K PTE     D A G . . . R V
0xffffaf80822a6000-0xffffaf80822af000    0x00000001022a6000        36K PTE     D A G . . W R V
...

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20231108075930.7157-3-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-11-08 07:08:33 -08:00
Alexandre Ghiti
629db01c64
riscv: Don't use PGD entries for the linear mapping
Propagating changes at this level is cumbersome as we need to go through
all the page tables when that happens (either when changing the
permissions or when splitting the mapping).

Note that this prevents the use of 4MB mapping for sv32 and 1GB mapping for
sv39 in the linear mapping.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20231108075930.7157-2-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-11-08 07:08:32 -08:00
David Lin
a60a609b7f
ASoC: nau8540: Add self recovery to improve capture quility
Reading the peak data to detect abnormal data in the ADC channel.
If abnormal data occurs, the driver takes recovery actions to
refresh the ADC channel.

Signed-off-by: David Lin <CTLIN0@nuvoton.com>
Link: https://lore.kernel.org/r/20231108061658.1265065-1-CTLIN0@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-11-08 13:21:05 +00:00
Maciej Żenczykowski
7b308feb4f netfilter: xt_recent: fix (increase) ipv6 literal buffer length
in6_pton() supports 'low-32-bit dot-decimal representation'
(this is useful with DNS64/NAT64 networks for example):

  # echo +aaaa:bbbb:cccc:dddd:eeee:ffff:1.2.3.4 > /proc/self/net/xt_recent/DEFAULT
  # cat /proc/self/net/xt_recent/DEFAULT
  src=aaaa:bbbb:cccc:dddd:eeee:ffff:0102:0304 ttl: 0 last_seen: 9733848829 oldest_pkt: 1 9733848829

but the provided buffer is too short:

  # echo +aaaa:bbbb:cccc:dddd:eeee:ffff:255.255.255.255 > /proc/self/net/xt_recent/DEFAULT
  -bash: echo: write error: Invalid argument

Fixes: 079aa88fe7 ("netfilter: xt_recent: IPv6 support")
Signed-off-by: Maciej Żenczykowski <zenczykowski@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2023-11-08 13:53:36 +01:00