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BUG: corrupted list in p9_fd_cancelled (3)

Status: upstream: reported on 2024/09/14 04:00
Subsystems: v9fs
[Documentation on labels]
Reported-by: syzbot+15a08eabe3d3838fb641@syzkaller.appspotmail.com
First crash: 333d, last: 2d07h
▶ ▼ Discussions (7)
Title Replies (including bot) Last reply
[syzbot] Monthly v9fs report (May 2025) 0 (1) 2025/05/15 07:46
[syzbot] Monthly v9fs report (Apr 2025) 0 (1) 2025/04/14 10:17
[syzbot] Monthly v9fs report (Mar 2025) 0 (1) 2025/03/04 15:15
[syzbot] Monthly v9fs report (Jan 2025) 0 (1) 2025/01/02 13:21
[syzbot] Monthly v9fs report (Dec 2024) 0 (1) 2024/12/02 10:25
[syzbot] Monthly v9fs report (Oct 2024) 0 (1) 2024/10/31 09:10
[syzbot] [v9fs?] BUG: corrupted list in p9_fd_cancelled (3) 0 (1) 2024/09/14 04:00
▶ ▼ Similar bugs (21)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 BUG: corrupted list in p9_fd_cancelled 1 1258d 1258d 0/2 closed as invalid on 2022/03/01 11:24
upstream BUG: corrupted list in p9_fd_cancelled (2) v9fs syz error error 273 432d 2088d 0/28 auto-obsoleted due to no activity on 2024/06/03 04:59
linux-5.15 BUG: corrupted list in p9_fd_cancelled (2) 4 534d 619d 0/3 auto-obsoleted due to no activity on 2024/03/09 04:25
linux-4.14 BUG: corrupted list in p9_fd_cancelled syz done 2 1992d 2038d 1/1 fixed on 2020/01/03 09:37
android-6-1 BUG: corrupted list in p9_fd_cancelled 27 359d 731d 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) 3 1131d 1167d 0/2 auto-closed as invalid on 2022/07/10 10:51
android-6-1 BUG: corrupted list in p9_fd_cancelled (2) syz error 11 18d 258d 0/2 premoderation: reported syz repro on 2024/08/31 06:31
android-54 BUG: corrupted list in p9_fd_cancelled 3 1419d 1628d 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 syz 2 188d 247d 0/3 auto-obsoleted due to no activity on 2025/02/17 18:13
linux-4.19 BUG: corrupted list in p9_fd_cancelled syz done 2 2012d 2074d 1/1 fixed on 2019/12/18 17:42
linux-6.1 BUG: corrupted list in p9_fd_cancelled 56 413d 797d 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) 1 243d 243d 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 syz done error 30 113d 839d 0/2 auto-obsoleted due to no activity on 2025/04/23 20:43
upstream BUG: corrupted list in p9_fd_cancelled v9fs 16 2395d 2496d 0/28 auto-closed as invalid on 2019/04/23 06:51
linux-4.19 BUG: corrupted list in p9_fd_cancelled (3) 1 1227d 1227d 0/1 auto-closed as invalid on 2022/05/05 22:32
linux-5.15 BUG: corrupted list in p9_fd_cancelled 1 784d 784d 0/3 auto-obsoleted due to no activity on 2023/07/23 04:06
android-54 BUG: corrupted list in p9_fd_cancelled (2) syz 25 406d 1270d 0/2 auto-obsoleted due to no activity on 2024/07/14 15:48
android-5-10 BUG: corrupted list in p9_fd_cancelled (4) 4 234d 344d 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) 1 840d 840d 0/1 upstream: reported on 2023/01/27 06:50
linux-4.19 BUG: corrupted list in p9_fd_cancelled (2) 1 1541d 1541d 0/1 auto-closed as invalid on 2021/06/25 15:45
android-5-10 BUG: corrupted list in p9_fd_cancelled (3) C done unreliable 38 474d 559d 0/2 auto-obsoleted due to no activity on 2024/05/07 18:52

Sample crash report:
 non-paged memory
list_del corruption, ffff888077eb8830->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:56!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 9344 Comm: syz.3.886 Not tainted 6.15.0-rc6-syzkaller-00080-g1a80a098c606 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__list_del_entry_valid_or_report+0x121/0x200 lib/list_debug.c:56
Code: 48 c7 c7 60 8c f4 8b e8 bd 3e c4 fc 90 0f 0b 4c 89 e7 e8 02 06 28 fd 4c 89 e2 48 89 de 48 c7 c7 c0 8c f4 8b e8 a0 3e c4 fc 90 <0f> 0b 48 89 ef e8 e5 05 28 fd 48 89 ea 48 89 de 48 c7 c7 20 8d f4
RSP: 0018:ffffc900032d76b8 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff888077eb8830 RCX: ffffc9000e411000
RDX: 0000000000000000 RSI: ffffffff819b24b6 RDI: 0000000000000005
RBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000001 R12: dead000000000100
R13: 0000000000000005 R14: ffff888077eb8830 R15: ffff888077eb8838
FS:  00007f7f1b6496c0(0000) GS:ffff8881249df000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555592b625c8 CR3: 0000000032c08000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 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]
 p9_fd_cancelled+0xa2/0x2a0 net/9p/trans_fd.c:740
 p9_client_flush.isra.0+0x349/0x420 net/9p/client.c:618
 p9_client_rpc+0xaab/0xc50 net/9p/client.c:741
 p9_client_version net/9p/client.c:930 [inline]
 p9_client_create+0xc2d/0x11c0 net/9p/client.c:1036
 v9fs_session_init+0x1f7/0x1a80 fs/9p/v9fs.c:410
 v9fs_mount+0xc5/0xa30 fs/9p/vfs_super.c:122
 legacy_get_tree+0x10c/0x220 fs/fs_context.c:662
 vfs_get_tree+0x8e/0x340 fs/super.c:1759
 do_new_mount fs/namespace.c:3881 [inline]
 path_mount+0x14d4/0x1f20 fs/namespace.c:4208
 do_mount fs/namespace.c:4221 [inline]
 __do_sys_mount fs/namespace.c:4432 [inline]
 __se_sys_mount fs/namespace.c:4409 [inline]
 __x64_sys_mount+0x28d/0x310 fs/namespace.c:4409
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7f1a78e969
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:00007f7f1b649038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7f1a9b6160 RCX: 00007f7f1a78e969
RDX: 0000200000000080 RSI: 0000200000000180 RDI: 0000000000000000
RBP: 00007f7f1a810ab1 R08: 0000200000000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7f1a9b6160 R15: 00007ffd286cc3c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x121/0x200 lib/list_debug.c:56
Code: 48 c7 c7 60 8c f4 8b e8 bd 3e c4 fc 90 0f 0b 4c 89 e7 e8 02 06 28 fd 4c 89 e2 48 89 de 48 c7 c7 c0 8c f4 8b e8 a0 3e c4 fc 90 <0f> 0b 48 89 ef e8 e5 05 28 fd 48 89 ea 48 89 de 48 c7 c7 20 8d f4
RSP: 0018:ffffc900032d76b8 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff888077eb8830 RCX: ffffc9000e411000
RDX: 0000000000000000 RSI: ffffffff819b24b6 RDI: 0000000000000005
RBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000001 R12: dead000000000100
R13: 0000000000000005 R14: ffff888077eb8830 R15: ffff888077eb8838
FS:  00007f7f1b6496c0(0000) GS:ffff8881249df000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555592b625c8 CR3: 0000000032c08000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (14):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/14 22:54 upstream 1a80a098c606 a4fa04ef .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: corrupted list in p9_fd_cancelled
2025/04/11 22:50 upstream 900241a5cc15 12ba9c21 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: corrupted list in p9_fd_cancelled
2025/03/01 06:20 upstream 5c44ddaf7df3 1e7a43e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: corrupted list in p9_fd_cancelled
2024/12/28 02:33 upstream 8379578b11d5 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root BUG: corrupted list in p9_fd_cancelled
2024/12/28 02:32 upstream 8379578b11d5 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root BUG: corrupted list in p9_fd_cancelled
2024/11/06 15:39 upstream 2e1b3cc9d7f7 3a465482 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root BUG: corrupted list in p9_fd_cancelled
2024/10/19 12:28 upstream 3d5ad2d4eca3 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root BUG: corrupted list in p9_fd_cancelled
2024/10/08 09:44 upstream 87d6aab2389e 402f1df0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: corrupted list in p9_fd_cancelled
2024/09/14 03:59 upstream e936e7d4a83b 158f4851 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: corrupted list in p9_fd_cancelled
2024/09/08 14:38 upstream d1f2d51b711a 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: corrupted list in p9_fd_cancelled
2024/08/27 01:39 upstream 5be63fc19fca 9aee4e0b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: corrupted list in p9_fd_cancelled
2024/08/27 01:39 upstream 5be63fc19fca 9aee4e0b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root BUG: corrupted list in p9_fd_cancelled
2024/06/18 02:30 upstream 2ccbdf43d5e7 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 BUG: corrupted list in p9_fd_cancelled
2024/11/22 11:56 linux-next cfba9f07a1d6 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root BUG: corrupted list in p9_fd_cancelled
* Struck through repros no longer work on HEAD.