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linux/drivers/net/ethernet/intel
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Emil Tantilov 237f1f7653 idpf: fix max_vport related crash on allocation error during init 
Set adapter->max_vports only after successful allocation of vports, netdevs
and  vport_config buffers. This fixes possible crashes on reset or rmmod,
following failed allocation on init

[  305.981402] idpf 0000:83:00.0: enabling device (0100 -> 0102)
[  305.994464] idpf 0000:83:00.0: Device HW Reset initiated
[  320.416872] BUG: kernel NULL pointer dereference, address: 0000000000000000
[  320.416918] #PF: supervisor read access in kernel mode
[  320.416942] #PF: error_code(0x0000) - not-present page
[  320.416963] PGD 2099657067 P4D 0
[  320.416983] Oops: Oops: 0000 [#1] SMP NOPTI
...
[  320.417093] RIP: 0010:idpf_remove+0x118/0x200 [idpf]
[  320.417130] Code: 8b bb 98 09 00 00 e8 17 0f 5b e5 48 8b bb e8 08 00 00 e8 0b 0f 5b e5 66 83 bb 28 06 00 00 00 48 8b bb 20 06 00 00 74 49 31 ed <48> 8b 04 ef 48 85 c0 74 2f 48 8b 78 20 e8 66 58 91 e5 48 8b 83 20
[  320.417183] RSP: 0018:ff7322212903fdb8 EFLAGS: 00010246
[  320.417205] RAX: 0000000000000000 RBX: ff4463de40300000 RCX: ff7322212903fd4c
[  320.417228] RDX: 0000000000000001 RSI: ffffffffa7f7d100 RDI: 0000000000000000
[  320.417250] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
[  320.417272] R10: 0000000000000001 R11: ff4463de3a638f58 R12: ff4463be89ac7000
[  320.417294] R13: ff4463be89ac7198 R14: ff4463be94fc7198 R15: ffffffffc0f10f20
[  320.417317] FS:  00007f963c0e6740(0000) GS:ff4463fdd65d8000(0000) knlGS:0000000000000000
[  320.417342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  320.417362] CR2: 0000000000000000 CR3: 00000020ba674002 CR4: 0000000000773ef0
[  320.417385] PKRU: 55555554
[  320.417398] Call Trace:
[  320.417412]  <TASK>
[  320.417429]  pci_device_remove+0x42/0xb0
[  320.417459]  device_release_driver_internal+0x1a9/0x210
[  320.417492]  driver_detach+0x4b/0x90
[  320.417516]  bus_remove_driver+0x70/0x100
[  320.417539]  pci_unregister_driver+0x2e/0xb0
[  320.417564]  __do_sys_delete_module.constprop.0+0x190/0x2f0
[  320.417592]  ? kmem_cache_free+0x31e/0x550
[  320.417619]  ? lockdep_hardirqs_on_prepare+0xde/0x190
[  320.417644]  ? do_syscall_64+0x38/0x6b0
[  320.417665]  do_syscall_64+0xc8/0x6b0
[  320.417683]  ? clear_bhb_loop+0x30/0x80
[  320.417706]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
[  320.417727] RIP: 0033:0x7f963bb30beb

Fixes: 0fe45467a1 ("idpf: add create vport and netdev configuration")
Reviewed-by: Madhu Chittim <madhu.chittim@intel.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Samuel Salin <Samuel.salin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20260717185340.3595286-13-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-23 09:00:50 -07:00
..
e1000 e1000: limit endianness conversion to boundary words 2026-06-13 16:44:06 -07:00
e1000e e1000e: Reconfigure PLL clock gate timeout and re-enable K1 on Meteor Lake 2026-06-22 14:44:50 -07:00
fm10k net: Consistently define pci_device_ids using named initializers 2026-05-12 18:16:34 -07:00
i40e i40e: Fix i40e_debug() to use struct i40e_hw argument 2026-06-22 14:44:50 -07:00
iavf net: ethtool: keep rtnl_lock for ops using ethtool_op_get_link() 2026-06-25 10:18:34 -07:00
ice ice: reject out-of-range ptype in ice_parser_profile_init 2026-07-23 09:00:50 -07:00
idpf idpf: fix max_vport related crash on allocation error during init 2026-07-23 09:00:50 -07:00
igb igb: fix typos in comments 2026-06-13 16:44:06 -07:00
igbvf net: Consistently define pci_device_ids using named initializers 2026-05-12 18:16:34 -07:00
igc Networking changes for 7.2. 2026-06-17 08:17:00 +01:00
ixgbe Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-06-16 14:59:58 -07:00
ixgbevf Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-21 15:09:02 -07:00
libeth libeth, idpf: use truesize as XDP RxQ info frag_size 2026-03-05 08:02:05 -08:00
libie libie: prevent memleak in fwlog code 2026-03-17 14:12:36 -07:00
e100.c net: Consistently define pci_device_ids using named initializers 2026-05-12 18:16:34 -07:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-11-06 09:27:40 -08:00
Makefile libie: fix linking with libie_{adminq,fwlog} when CONFIG_LIBIE=n 2025-09-16 16:18:45 -07:00