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: 17d, last: 13d
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in gid_table_release_one origin:upstream syz 38 13d 56d 0/3 upstream: reported syz repro on 2025/05/12 20:58
upstream WARNING in gid_table_release_one (3) rdma syz 32 2d20h 56d 0/29 upstream: reported syz repro on 2025/05/13 11:35
linux-6.1 WARNING in gid_table_release_one 1 325d 325d 0/3 auto-obsoleted due to no activity on 2024/11/25 05:33
upstream WARNING in gid_table_release_one (2) rdma 1 313d 309d 28/29 fixed on 2024/10/24 03:35
upstream WARNING in gid_table_release_one rdma 12 375d 383d 0/29 auto-obsoleted due to no activity on 2024/08/06 20:20
linux-6.1 WARNING in gid_table_release_one (2) 3 39d 59d 0/3 upstream: reported on 2025/05/09 23:30

Sample crash report:
------------[ cut here ]------------
GID entry ref leak for dev syz1 index 2 ref=1
WARNING: CPU: 1 PID: 2912 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline]
WARNING: CPU: 1 PID: 2912 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x30f/0x490 drivers/infiniband/core/cache.c:886
Modules linked in:
CPU: 1 PID: 2912 Comm: kworker/u4:8 Not tainted 6.6.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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 c0 d7 85 8b 48 8b 74 24 20 44 89 fa e8 f1 1a 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:ffffc9000bcf7a68 EFLAGS: 00010246
RAX: aa93f59974e12d00 RBX: ffff888025957cd8 RCX: ffff88802c4d9e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 1ffff11004b2af80 R08: ffff8880b8e28c13 R09: 1ffff110171c5182
R10: dffffc0000000000 R11: ffffed10171c5183 R12: 1ffff11004b2af9b
R13: ffff888025957c00 R14: ffff888030efb900 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae06971d60 CR3: 0000000056b74000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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 (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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.