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BUG: corrupted list in p9_fd_cancelled (4)

Status: auto-obsoleted due to no activity on 2024/12/24 01:20
Reported-by: syzbot+ce9e7c44e38522943afd@syzkaller.appspotmail.com
First crash: 585d, last: 475d
▶ ▼ 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 1500d 1500d 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 674d 2329d 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 775d 861d 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 2234d 2279d 1/1 fixed on 2020/01/03 09:37
android-6-1 BUG: corrupted list in p9_fd_cancelled 8 27 601d 973d 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 1373d 1408d 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 136d 500d 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 1661d 1870d 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 430d 489d 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 2253d 2316d 1/1 fixed on 2019/12/18 17:42
linux-6.1 BUG: corrupted list in p9_fd_cancelled 8 56 654d 1038d 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 485d 485d 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 355d 1080d 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 2637d 2738d 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 231d 231d 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 1468d 1468d 0/1 auto-closed as invalid on 2022/05/05 22:32
linux-5.15 BUG: corrupted list in p9_fd_cancelled 8 1 1025d 1025d 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 648d 1512d 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 166d 486d 0/29 auto-obsoleted due to no activity on 2025/11/08 17:53
linux-4.19 BUG: corrupted list in p9_fd_cancelled (4) 8 1 1082d 1082d 0/1 upstream: reported on 2023/01/27 06:50
linux-4.19 BUG: corrupted list in p9_fd_cancelled (2) 8 1 1783d 1783d 0/1 auto-closed as invalid on 2021/06/25 15:45
android-5-10 BUG: corrupted list in p9_fd_cancelled (3) 8 C done unreliable 38 716d 801d 0/2 auto-obsoleted due to no activity on 2024/05/07 18:52

Sample crash report:
list_del corruption, ffff88812435ae88->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:55!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 325 Comm: syz.2.3 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 5e c9 55 02 0f 0b 48 c7 c7 c0 28 60 85 4c 89 f6 e8 4d c9 55 02 0f 0b 48 c7 c7 20 29 60 85 4c 89 f6 e8 3c c9 55 02 <0f> 0b 48 c7 c7 80 29 60 85 4c 89 f6 e8 2b c9 55 02 0f 0b 48 c7 c7
RSP: 0018:ffffc90005ab7468 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: dc0f99b524335700
RDX: ffffc900058a9000 RSI: 0000000000000771 RDI: 0000000000000772
RBP: ffffc90005ab7488 R08: ffffffff81522098 R09: ffffed103ee2a5f8
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88812435ae88 R15: dead000000000122
FS:  00007ffb7bed16c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3b7e136c0 CR3: 000000010b009000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 list_del include/linux/list.h:146 [inline]
 p9_fd_cancelled+0x74/0x1d0 net/9p/trans_fd.c:725
 p9_client_flush+0x392/0x570 net/9p/client.c:682
 p9_client_rpc+0xae6/0x1390 net/9p/client.c:789
 p9_client_create+0x9be/0x1130 net/9p/client.c:1057
 v9fs_session_init+0x1fa/0x19b0 fs/9p/v9fs.c:406
 v9fs_mount+0x75/0x7b0 fs/9p/vfs_super.c:126
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1570
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910
 path_mount+0x56f/0xcb0 fs/namespace.c:3240
 do_mount fs/namespace.c:3253 [inline]
 __do_sys_mount fs/namespace.c:3461 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3438
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3438
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7ffb7d4bcef9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffb7bed1038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffb7d675208 RCX: 00007ffb7d4bcef9
RDX: 0000000020000240 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007ffb7d52fb76 R08: 0000000020000580 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffb7d675208 R15: 00007ffeefe8dc48
Modules linked in:
---[ end trace 078832ba602b6e15 ]---
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 5e c9 55 02 0f 0b 48 c7 c7 c0 28 60 85 4c 89 f6 e8 4d c9 55 02 0f 0b 48 c7 c7 20 29 60 85 4c 89 f6 e8 3c c9 55 02 <0f> 0b 48 c7 c7 80 29 60 85 4c 89 f6 e8 2b c9 55 02 0f 0b 48 c7 c7
RSP: 0018:ffffc90005ab7468 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: dc0f99b524335700
RDX: ffffc900058a9000 RSI: 0000000000000771 RDI: 0000000000000772
RBP: ffffc90005ab7488 R08: ffffffff81522098 R09: ffffed103ee2a5f8
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88812435ae88 R15: dead000000000122
FS:  00007ffb7bed16c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3b7e136c0 CR3: 000000010b009000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/25 01:12 android13-5.10-lts 8d23314f588a 5643e0e9 .config console log report info ci2-android-5-10 BUG: corrupted list in p9_fd_cancelled
2024/08/13 10:33 android13-5.10-lts 0890c03b8b7d 7b0f4b46 .config console log report info ci2-android-5-10 BUG: corrupted list in p9_fd_cancelled
2024/06/28 01:34 android13-5.10-lts a4a2b7a82ee4 6ef39602 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: corrupted list in p9_fd_cancelled
2024/06/07 05:14 android13-5.10-lts d3c4d815bf09 121701b6 .config console log report info ci2-android-5-10 BUG: corrupted list in p9_fd_cancelled
* Struck through repros no longer work on HEAD.