syzbot


BUG: corrupted list in cleanup_recv_queue

Status: moderation: reported on 2025/05/07 05:04
Subsystems: rdma
[Documentation on labels]
Reported-by: syzbot+9c0b0470cf9dcb027c25@syzkaller.appspotmail.com
First crash: 46d, last: 22d

Sample crash report:
list_del corruption. next->prev should be ffff888037748400, but was ffff88803ac76800. (next=ffff88802aab1000)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:65!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 6871 Comm: kworker/u32:26 Not tainted 6.15.0-syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: ib-unreg-wq ib_unregister_work
RIP: 0010:__list_del_entry_valid_or_report+0x1b3/0x200 lib/list_debug.c:65
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4b 49 8b 54 24 08 4c 89 e1 48 89 de 48 c7 c7 40 a9 f4 8b e8 4e 01 c4 fc 90 <0f> 0b e8 56 33 4a fd e9 6b fe ff ff 48 89 df e8 49 33 4a fd e9 7d
RSP: 0018:ffffc90022677a30 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888037748400 RCX: ffffffff819aa5d9
RDX: 0000000000000000 RSI: ffffffff819b2466 RDI: 0000000000000005
RBP: ffff88802aab1008 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffff88802aab1000
R13: ffffed1002645951 R14: 0000000000000001 R15: ffff888037748408
FS:  0000000000000000(0000) GS:ffff8880d69da000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3a0406f98 CR3: 000000002bb3a000 CR4: 0000000000352ef0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [inline]
 cleanup_recv_queue.part.0+0x9c/0x400 drivers/infiniband/core/mad.c:2767
 cleanup_recv_queue drivers/infiniband/core/mad.c:2753 [inline]
 ib_mad_port_close+0x326/0x4c0 drivers/infiniband/core/mad.c:3062
 ib_mad_remove_device+0x8f/0x270 drivers/infiniband/core/mad.c:3130
 remove_client_context+0xbf/0x120 drivers/infiniband/core/device.c:775
 disable_device+0x13a/0x280 drivers/infiniband/core/device.c:1281
 __ib_unregister_device+0x2b4/0x480 drivers/infiniband/core/device.c:1518
 ib_unregister_work+0x19/0x30 drivers/infiniband/core/device.c:1630
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x1b3/0x200 lib/list_debug.c:65
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4b 49 8b 54 24 08 4c 89 e1 48 89 de 48 c7 c7 40 a9 f4 8b e8 4e 01 c4 fc 90 <0f> 0b e8 56 33 4a fd e9 6b fe ff ff 48 89 df e8 49 33 4a fd e9 7d
RSP: 0018:ffffc90022677a30 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff888037748400 RCX: ffffffff819aa5d9
RDX: 0000000000000000 RSI: ffffffff819b2466 RDI: 0000000000000005
RBP: ffff88802aab1008 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffff88802aab1000
R13: ffffed1002645951 R14: 0000000000000001 R15: ffff888037748408
FS:  0000000000000000(0000) GS:ffff8880d6bda000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2446ba4e9c CR3: 000000000e180000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/26 21:58 upstream 0ff41df1cb26 874a1386 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: corrupted list in cleanup_recv_queue
2025/05/13 17:58 upstream e9565e23cd89 9497799b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream BUG: corrupted list in cleanup_recv_queue
2025/05/03 04:52 upstream 00b827f0cffa b0714e37 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 BUG: corrupted list in cleanup_recv_queue
* Struck through repros no longer work on HEAD.