syzbot


WARNING in gid_table_release_one

Status: upstream: reported on 2025/06/21 11:54
Reported-by: syzbot+966227477bc96380cdea@syzkaller.appspotmail.com
First crash: 123d, last: 21d
Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in gid_table_release_one origin:upstream -1 syz 39 6d03h 163d 0/3 upstream: reported syz repro on 2025/05/12 20:58
upstream WARNING in gid_table_release_one (3) rdma -1 C done 89 14h16m 162d 0/29 upstream: reported C repro on 2025/05/13 11:35
linux-6.1 WARNING in gid_table_release_one -1 1 431d 431d 0/3 auto-obsoleted due to no activity on 2024/11/25 05:33
upstream WARNING in gid_table_release_one (2) rdma -1 1 419d 415d 28/29 fixed on 2024/10/24 03:35
upstream WARNING in gid_table_release_one rdma -1 12 482d 489d 0/29 auto-obsoleted due to no activity on 2024/08/06 20:20
linux-6.1 WARNING in gid_table_release_one (2) -1 3 146d 166d 0/3 auto-obsoleted due to no activity on 2025/09/06 20:49

Sample crash report:
WARNING: CPU: 0 PID: 12 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline]
WARNING: CPU: 0 PID: 12 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x30f/0x490 drivers/infiniband/core/cache.c:886
Modules linked in:
CPU: 0 PID: 12 Comm: kworker/u4:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: ib-unreg-wq ib_unregister_work
RIP: 0010:release_gid_table drivers/infiniband/core/cache.c:806 [inline]
RIP: 0010:gid_table_release_one+0x30f/0x490 drivers/infiniband/core/cache.c:886
Code: 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 3c 41 8b 0e 48 c7 c7 e0 06 86 8b 48 8b 74 24 20 44 89 fa e8 51 3d b0 f9 <0f> 0b e9 14 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 1a ff
RSP: 0018:ffffc90000117a68 EFLAGS: 00010246
RAX: 9f2b22b1bfeca500 RBX: ffff88807edb2ed8 RCX: ffff888019e7da00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 1ffff1100fdb65c0 R08: ffffc90000117667 R09: 1ffff92000022ecc
R10: dffffc0000000000 R11: fffff52000022ecd R12: 1ffff1100fdb65db
R13: ffff88807edb2e00 R14: ffff888023984800 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e720ff8 CR3: 000000006661c000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 ib_device_release+0xd2/0x1b0 drivers/infiniband/core/device.c:498
 device_release+0x96/0x1c0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x221/0x470 lib/kobject.c:737
 process_one_work kernel/workqueue.c:2634 [inline]
 process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/01 09:07 linux-6.6.y 147338df3487 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in gid_table_release_one
2025/10/01 09:07 linux-6.6.y 147338df3487 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in gid_table_release_one
2025/10/01 09:04 linux-6.6.y 147338df3487 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in gid_table_release_one
2025/06/24 22:45 linux-6.6.y 6282921b6825 26d77996 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in gid_table_release_one
2025/06/24 02:28 linux-6.6.y 6282921b6825 e2f27c35 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in gid_table_release_one
2025/06/21 11:54 linux-6.6.y 6282921b6825 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in gid_table_release_one
* Struck through repros no longer work on HEAD.