syzbot


BUG: corrupted list in p9_fd_cancelled

Status: auto-obsoleted due to no activity on 2023/07/23 04:06
Reported-by: syzbot+d0599bdf343fb42460ea@syzkaller.appspotmail.com
First crash: 429d, last: 429d
Similar bugs (16)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 BUG: corrupted list in p9_fd_cancelled 1 904d 904d 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 77d 1733d 0/26 upstream: reported syz repro on 2019/08/29 03:58
linux-5.15 BUG: corrupted list in p9_fd_cancelled (2) 4 179d 264d 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 1637d 1683d 1/1 fixed on 2020/01/03 09:37
android-6-1 BUG: corrupted list in p9_fd_cancelled 27 5d01h 377d 0/2 premoderation: reported on 2023/05/16 17:03
android-5-10 BUG: corrupted list in p9_fd_cancelled (2) 3 777d 812d 0/2 auto-closed as invalid on 2022/07/10 10:51
android-54 BUG: corrupted list in p9_fd_cancelled 3 1065d 1273d 0/2 auto-closed as invalid on 2021/10/25 12:29
linux-4.19 BUG: corrupted list in p9_fd_cancelled syz done 2 1657d 1720d 1/1 fixed on 2019/12/18 17:42
linux-6.1 BUG: corrupted list in p9_fd_cancelled 56 58d 442d 0/3 upstream: reported on 2023/03/12 02:32
android-5-15 BUG: corrupted list in p9_fd_cancelled origin:upstream missing-backport syz done 28 50d 484d 0/2 premoderation: reported syz repro on 2023/01/29 05:13
upstream BUG: corrupted list in p9_fd_cancelled v9fs 16 2041d 2142d 0/26 auto-closed as invalid on 2019/04/23 06:51
linux-4.19 BUG: corrupted list in p9_fd_cancelled (3) 1 872d 872d 0/1 auto-closed as invalid on 2022/05/05 22:32
android-54 BUG: corrupted list in p9_fd_cancelled (2) syz 25 52d 916d 0/2 upstream: reported syz repro on 2021/11/23 15:00
linux-4.19 BUG: corrupted list in p9_fd_cancelled (4) 1 486d 486d 0/1 upstream: reported on 2023/01/27 06:50
linux-4.19 BUG: corrupted list in p9_fd_cancelled (2) 1 1187d 1187d 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 120d 205d 0/2 auto-obsoleted due to no activity on 2024/05/07 18:52

Sample crash report:
list_del corruption, ffff88806dfae3b0->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: 2728 Comm: syz-executor.5 Not tainted 5.15.104-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:__list_del_entry_valid+0xe5/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 46 4c 0b 06 0f 0b 48 c7 c7 80 54 d8 8a 4c 89 f6 e8 35 4c 0b 06 0f 0b 48 c7 c7 e0 54 d8 8a 4c 89 f6 e8 24 4c 0b 06 <0f> 0b 48 c7 c7 40 55 d8 8a 4c 89 f6 e8 13 4c 0b 06 0f 0b 48 c7 c7
RSP: 0018:ffffc90011017510 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: b8a53d36ca552f00
RDX: ffffc9000462b000 RSI: 0000000000006565 RDI: 0000000000006566
RBP: ffff88806dfae300 R08: ffffffff8166101c R09: ffffed10173667a0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888039e7a800 R14: ffff88806dfae3b0 R15: dead000000000122
FS:  00007f60125fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca4e464718 CR3: 0000000023bdd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:132 [inline]
 list_del include/linux/list.h:146 [inline]
 p9_fd_cancelled+0x95/0x220 net/9p/trans_fd.c:736
 p9_client_flush+0x392/0x570 net/9p/client.c:677
 p9_client_rpc+0xb35/0x1290 net/9p/client.c:784
 p9_client_create+0x9b4/0x1000 net/9p/client.c:1052
 v9fs_session_init+0x1fe/0x1910 fs/9p/v9fs.c:409
 v9fs_mount+0x72/0x860 fs/9p/vfs_super.c:126
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:610
 vfs_get_tree+0x88/0x270 fs/super.c:1499
 do_new_mount+0x28b/0xad0 fs/namespace.c:2994
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f60140ce0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f60125fe168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f60141ee120 RCX: 00007f60140ce0f9
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007f6014129b39 R08: 0000000020000180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca8ca124f R14: 00007f60125fe300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 3d9658d3efb09063 ]---
RIP: 0010:__list_del_entry_valid+0xe5/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 46 4c 0b 06 0f 0b 48 c7 c7 80 54 d8 8a 4c 89 f6 e8 35 4c 0b 06 0f 0b 48 c7 c7 e0 54 d8 8a 4c 89 f6 e8 24 4c 0b 06 <0f> 0b 48 c7 c7 40 55 d8 8a 4c 89 f6 e8 13 4c 0b 06 0f 0b 48 c7 c7
RSP: 0018:ffffc90011017510 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: b8a53d36ca552f00
RDX: ffffc9000462b000 RSI: 0000000000006565 RDI: 0000000000006566
RBP: ffff88806dfae300 R08: ffffffff8166101c R09: ffffed10173667a0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888039e7a800 R14: ffff88806dfae3b0 R15: dead000000000122
FS:  00007f60125fe700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca4e464718 CR3: 0000000023bdd000 CR4: 00000000003506e0
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
2023/03/25 04:04 linux-5.15.y 115472395b0a 9700afae .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan BUG: corrupted list in p9_fd_cancelled
* Struck through repros no longer work on HEAD.