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BUG: corrupted list in p9_fd_cancelled (2)

Status: auto-closed as invalid on 2021/06/25 15:45
Reported-by: syzbot+2d1761be4c55a5ab1ca1@syzkaller.appspotmail.com
First crash: 1790d, last: 1790d
▶ ▼ Similar bugs (22)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 BUG: corrupted list in p9_fd_cancelled 8 1 1508d 1508d 0/2 closed as invalid on 2022/03/01 11:24
upstream BUG: corrupted list in p9_fd_cancelled (2) v9fs 8 syz error error 273 681d 2337d 0/29 auto-obsoleted due to no activity on 2024/06/03 04:59
linux-5.15 BUG: corrupted list in p9_fd_cancelled (2) 8 4 783d 868d 0/3 auto-obsoleted due to no activity on 2024/03/09 04:25
linux-4.14 BUG: corrupted list in p9_fd_cancelled 8 syz done 2 2241d 2287d 1/1 fixed on 2020/01/03 09:37
android-6-1 BUG: corrupted list in p9_fd_cancelled 8 27 608d 980d 0/2 auto-obsoleted due to no activity on 2024/08/20 17:39
android-5-10 BUG: corrupted list in p9_fd_cancelled (2) 8 3 1381d 1416d 0/2 auto-closed as invalid on 2022/07/10 10:51
android-6-1 BUG: corrupted list in p9_fd_cancelled (2) 8 syz error 14 144d 508d 0/2 auto-obsoleted due to no activity on 2025/11/28 05:57
android-54 BUG: corrupted list in p9_fd_cancelled 8 3 1669d 1877d 0/2 auto-closed as invalid on 2021/10/25 12:29
linux-5.15 BUG: corrupted list in p9_fd_cancelled (3) origin:lts-only 8 syz 2 437d 497d 0/3 auto-obsoleted due to no activity on 2025/02/17 18:13
linux-4.19 BUG: corrupted list in p9_fd_cancelled 8 syz done 2 2261d 2324d 1/1 fixed on 2019/12/18 17:42
linux-6.1 BUG: corrupted list in p9_fd_cancelled 8 56 662d 1046d 0/3 auto-obsoleted due to no activity on 2024/07/04 11:58
linux-6.1 BUG: corrupted list in p9_fd_cancelled (2) 8 1 493d 493d 0/3 auto-obsoleted due to no activity on 2024/12/24 10:47
android-5-15 BUG: corrupted list in p9_fd_cancelled origin:upstream missing-backport 8 syz done error 30 362d 1088d 0/2 auto-obsoleted due to no activity on 2025/04/23 20:43
upstream BUG: corrupted list in p9_fd_cancelled v9fs 8 16 2645d 2745d 0/29 auto-closed as invalid on 2019/04/23 06:51
android-5-15 BUG: corrupted list in p9_fd_cancelled (2) 8 1 239d 239d 0/2 auto-obsoleted due to no activity on 2025/08/25 13:49
linux-4.19 BUG: corrupted list in p9_fd_cancelled (3) 8 1 1476d 1476d 0/1 auto-closed as invalid on 2022/05/05 22:32
linux-5.15 BUG: corrupted list in p9_fd_cancelled 8 1 1033d 1033d 0/3 auto-obsoleted due to no activity on 2023/07/23 04:06
android-54 BUG: corrupted list in p9_fd_cancelled (2) 8 syz 25 655d 1520d 0/2 auto-obsoleted due to no activity on 2024/07/14 15:48
upstream BUG: corrupted list in p9_fd_cancelled (3) v9fs 8 16 173d 494d 0/29 auto-obsoleted due to no activity on 2025/11/08 17:53
android-5-10 BUG: corrupted list in p9_fd_cancelled (4) 8 4 483d 593d 0/2 auto-obsoleted due to no activity on 2024/12/24 01:20
linux-4.19 BUG: corrupted list in p9_fd_cancelled (4) 8 1 1090d 1090d 0/1 upstream: reported on 2023/01/27 06:50
android-5-10 BUG: corrupted list in p9_fd_cancelled (3) 8 C done unreliable 38 723d 808d 0/2 auto-obsoleted due to no activity on 2024/05/07 18:52

Sample crash report:
ceph: No mds server is up or the cluster is laggy
libceph: connect [d::]:6789 error -101
libceph: mon0 [d::]:6789 connect error
list_del corruption, ffff88809ea39fb0->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:45!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 24745 Comm: syz-executor.5 Not tainted 4.19.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a lib/list_debug.c:45
libceph: connect [d::]:6789 error -101
Code: e8 3a 47 f7 ff 0f 0b 48 89 ee 48 c7 c7 20 c0 b3 88 e8 29 47 f7 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 60 bf b3 88 e8 15 47 f7 ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 c0 bf b3 88 e8 01 47 f7 ff 0f 0b
RSP: 0018:ffff8880564cf720 EFLAGS: 00010286
libceph: mon0 [d::]:6789 connect error
RAX: 000000000000004e RBX: 0000000000000005 RCX: 0000000000000000
RDX: 000000000000e26e RSI: ffffffff814de301 RDI: ffffed100ac99ed6
RBP: ffff88809ea39fb0 R08: 000000000000004e R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200
R13: dead000000000100 R14: ffff88809ea39fb8 R15: ffffffff87c03460
FS:  00007f804b248700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafd33d2f80 CR3: 0000000059b72000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
ceph: No mds server is up or the cluster is laggy
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 p9_fd_cancelled+0x71/0x230 net/9p/trans_fd.c:737
 p9_client_flush+0x397/0x490 net/9p/client.c:690
libceph: connect [d::]:6789 error -101
libceph: mon0 [d::]:6789 connect error
 p9_client_rpc+0x1203/0x1440 net/9p/client.c:797
 p9_client_stat+0xfe/0x590 net/9p/client.c:1717
 v9fs_refresh_inode+0xb5/0x240 fs/9p/vfs_inode.c:1426
 v9fs_lookup_revalidate+0x169/0x210 fs/9p/vfs_dentry.c:102
 complete_walk+0x1c6/0x240 fs/namei.c:800
 path_lookupat+0x26f/0x8d0 fs/namei.c:2323
 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349
 user_path_at include/linux/namei.h:57 [inline]
 do_fchownat+0xe1/0x1e0 fs/open.c:675
 __do_sys_chown fs/open.c:701 [inline]
 __se_sys_chown fs/open.c:699 [inline]
 __x64_sys_chown+0x77/0xb0 fs/open.c:699
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x465ef9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f804b248188 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465ef9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000140
RBP: 00000000004bcd1c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffd00b5c43f R14: 00007f804b248300 R15: 0000000000022000
Modules linked in:
---[ end trace 3076ff8f133841ab ]---
RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a lib/list_debug.c:45
Code: e8 3a 47 f7 ff 0f 0b 48 89 ee 48 c7 c7 20 c0 b3 88 e8 29 47 f7 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 60 bf b3 88 e8 15 47 f7 ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 c0 bf b3 88 e8 01 47 f7 ff 0f 0b
libceph: connect [d::]:6789 error -101
RSP: 0018:ffff8880564cf720 EFLAGS: 00010286
RAX: 000000000000004e RBX: 0000000000000005 RCX: 0000000000000000
RDX: 000000000000e26e RSI: ffffffff814de301 RDI: ffffed100ac99ed6
RBP: ffff88809ea39fb0 R08: 000000000000004e R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200
R13: dead000000000100 R14: ffff88809ea39fb8 R15: ffffffff87c03460
FS:  00007f804b248700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafd33d2f80 CR3: 0000000059b72000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/02/25 15:45 linux-4.19.y 2d19be4653f5 76f7fc95 .config console log report info ci2-linux-4-19 BUG: corrupted list in p9_fd_cancelled
* Struck through repros no longer work on HEAD.