Jann Horn 425224c2d7 proc: Fix broken error paths for namespace links ... Don't return the return value of down_read_killable() (0) when a ptrace access check fails, return -EACCES as intended. Reported-by: Magnus Lindholm <linmag7@gmail.com> Closes: https://lore.kernel.org/r/20260706170735.2941493-1-linmag7@gmail.com Fixes: 6650527444 ("proc: protect ptrace_may_access() with exec_update_lock (part 1)") Cc: stable@vger.kernel.org Signed-off-by: Jann Horn <jannh@google.com> Link: https://patch.msgid.link/20260706-procfs-ns-eacces-fix-v1-1-a69ab14c02e6@google.com Tested-by: Magnus Lindholm <linmag7@gmail.com> Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>		2026-07-22 15:37:24 +02:00
..
array.c	proc: protect ptrace_may_access() with exec_update_lock (part 1)	2026-06-05 10:00:55 +02:00
base.c	mm.git review status for mm-hotfixes-stable..mm-nonmm-stable	2026-06-21 13:20:19 -07:00
bootconfig.c	fs/proc: Skip bootloader comment if no embedded kernel parameters	2024-04-09 23:36:18 +09:00
cmdline.c	proc: mark /proc/cmdline as permanent	2023-02-02 22:50:02 -08:00
consoles.c	proc: Add nbcon support for /proc/consoles	2024-09-04 15:56:33 +02:00
cpuinfo.c	x86/aperfmperf: Replace aperfmperf_get_khz()	2022-04-27 20:22:19 +02:00
devices.c	proc: mark more files as permanent	2022-10-03 14:21:45 -07:00
fd.c	proc: protect ptrace_may_access() with exec_update_lock (FD links)	2026-06-05 10:00:55 +02:00
fd.h	fs: port ->permission() to pass mnt_idmap	2023-01-19 09:24:28 +01:00
generic.c	proc: only bump parent nlink when registering directories	2026-07-01 15:26:24 +02:00
inode.c	fs/proc: replace "__auto_type" with "const auto"	2025-12-08 15:32:15 -08:00
internal.h	proc: protect ptrace_may_access() with exec_update_lock (FD links)	2026-06-05 10:00:55 +02:00
interrupts.c	fs/procfs: Switch to irq_get_nr_irqs()	2024-10-16 21:56:59 +02:00
Kconfig	virtio-mem: support CONFIG_PROC_VMCORE_DEVICE_RAM	2025-01-27 09:39:25 -05:00
kcore.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
kmsg.c	printk changes for 6.1	2022-10-10 11:24:19 -07:00
loadavg.c	proc: mark more files as permanent	2022-10-03 14:21:45 -07:00
Makefile	genirq/proc: Speed up /proc/interrupts iteration	2026-05-26 16:21:15 +02:00
meminfo.c	mm.git review status for linus..mm-stable	2026-04-15 12:59:16 -07:00
namespaces.c	proc: Fix broken error paths for namespace links	2026-07-22 15:37:24 +02:00
nommu.c	fs: create helper file_user_path() for user displayed mapped file path	2023-10-19 11:03:15 +02:00
page.c	fs/proc: fix KPF_KSM reported for all anonymous pages	2026-07-01 19:02:54 -07:00
proc_net.c	proc: subset=pid: Show /proc/self/net only for CAP_NET_ADMIN	2026-05-11 23:13:01 +02:00
proc_sysctl.c	VFS: use wait_var_event for waiting in d_alloc_parallel()	2026-06-05 00:34:54 -04:00
proc_tty.c	proc: delete unused <linux/uaccess.h> includes	2022-07-17 17:31:39 -07:00
root.c	proc: handle subset=pid separately in userns visibility checks	2026-05-11 23:13:02 +02:00
self.c	fs/proc: Don't lock root inode when creating "self" and "thread-self"	2026-03-06 10:24:11 +01:00
softirqs.c	proc/softirqs: replace seq_printf with seq_put_decimal_ull_width	2024-11-07 07:40:14 -10:00
stat.c	Updates for the NOHZ subsystem:	2026-06-15 13:48:52 +05:30
task_mmu.c	fs/proc/task_mmu: do not warn on seeing non-migration pmd entry	2026-06-08 18:21:32 -07:00
task_nommu.c	fs/proc/task_mmu: factor out proc_maps_private fields used by PROCMAP_QUERY	2025-09-13 16:54:48 -07:00
thread_self.c	fs/proc: Don't lock root inode when creating "self" and "thread-self"	2026-03-06 10:24:11 +01:00
uptime.c	tick/sched: Consolidate idle time fetching APIs	2026-06-02 21:27:26 +02:00
util.c	fs/proc/util.c: include fs/proc/internal.h for name_to_int()	2019-01-04 13:13:45 -08:00
version.c	proc: mark more files as permanent	2022-10-03 14:21:45 -07:00
vmcore.c	mm: rename my_zero_pfn() to zero_pfn()	2026-04-05 13:53:01 -07:00