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BUG: corrupted list in p9_fd_cancelled (3)

Status: upstream: reported on 2024/09/11 14:53
Reported-by: syzbot+5d878242607732f2004f@syzkaller.appspotmail.com
First crash: 6d22h, last: 6d22h
▶ ▼ 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 1018d 1018d 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 191d 1847d 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 293d 378d 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 1751d 1797d 1/1 fixed on 2020/01/03 09:37
android-6-1 BUG: corrupted list in p9_fd_cancelled 27 118d 490d 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 891d 926d 0/2 auto-closed as invalid on 2022/07/10 10:51
android-6-1 BUG: corrupted list in p9_fd_cancelled (2) 2 4d07h 18d 0/2 premoderation: reported on 2024/08/31 06:31
android-54 BUG: corrupted list in p9_fd_cancelled 3 1179d 1387d 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 1771d 1834d 1/1 fixed on 2019/12/18 17:42
linux-6.1 BUG: corrupted list in p9_fd_cancelled 56 172d 556d 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 3d02h 3d02h 0/3 upstream: reported on 2024/09/15 10:47
android-5-15 BUG: corrupted list in p9_fd_cancelled origin:upstream missing-backport syz done 29 20d 598d 0/2 premoderation: reported syz repro on 2023/01/29 05:13
upstream BUG: corrupted list in p9_fd_cancelled v9fs 16 2155d 2255d 0/28 auto-closed as invalid on 2019/04/23 06:51
linux-4.19 BUG: corrupted list in p9_fd_cancelled (3) 1 986d 986d 0/1 auto-closed as invalid on 2022/05/05 22:32
linux-5.15 BUG: corrupted list in p9_fd_cancelled 1 543d 543d 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 165d 1029d 0/2 auto-obsoleted due to no activity on 2024/07/14 15:48
upstream BUG: corrupted list in p9_fd_cancelled (3) v9fs 5 4d09h 4d09h 0/28 upstream: reported on 2024/09/14 04:00
android-5-10 BUG: corrupted list in p9_fd_cancelled (4) 3 36d 103d 0/2 premoderation: reported on 2024/06/07 05:15
linux-4.19 BUG: corrupted list in p9_fd_cancelled (4) 1 600d 600d 0/1 upstream: reported on 2023/01/27 06:50
linux-4.19 BUG: corrupted list in p9_fd_cancelled (2) 1 1300d 1300d 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 233d 318d 0/2 auto-obsoleted due to no activity on 2024/05/07 18:52

Sample crash report:
list_del corruption, ffff0000d53770b0->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:55!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4212 Comm: syz.1.27 Not tainted 5.15.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __list_del_entry_valid+0x110/0x150 lib/list_debug.c:53
lr : __list_del_entry_valid+0x110/0x150 lib/list_debug.c:53
sp : ffff8000205471b0
x29: ffff8000205471b0 x28: dfff800000000000 x27: 1ffff000040a8e58
x26: 1fffe0001aa6ee00 x25: dfff800000000000 x24: ffff0000c0fac800
x23: ffff7000040a8e50 x22: dead000000000100 x21: dfff800000000000
x20: dead000000000122 x19: ffff0000d53770b0 x18: 0000000000000002
x17: 0000000000000002 x16: ffff800011ab846c x15: 00000000ffffffff
x14: ffff0000c6729b40 x13: 0000000000000001 x12: 0000000000040000
x11: 000000000000aa64 x10: ffff800022929000 x9 : fc9e30ac581d0c00
x8 : fc9e30ac581d0c00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020546918 x4 : ffff800014b8faa0 x3 : ffff80000a983a9c
x2 : ffff0001b41b0d10 x1 : 0000000100000001 x0 : 000000000000004e
Call trace:
 __list_del_entry_valid+0x110/0x150 lib/list_debug.c:53
 __list_del_entry include/linux/list.h:132 [inline]
 list_del include/linux/list.h:146 [inline]
 p9_fd_cancelled+0x9c/0x1d4 net/9p/trans_fd.c:736
 p9_client_flush+0x300/0x478 net/9p/client.c:681
 p9_client_rpc+0x964/0xf68 net/9p/client.c:788
 p9_client_create+0x95c/0xe04 net/9p/client.c:1056
 v9fs_session_init+0x18c/0x1504 fs/9p/v9fs.c:409
 v9fs_mount+0x88/0x780 fs/9p/vfs_super.c:126
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1528
 do_new_mount+0x278/0x8fc fs/namespace.c:3005
 path_mount+0x594/0x101c fs/namespace.c:3335
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount fs/namespace.c:3533 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3533
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 91058000 aa1303e1 f2fbd5a2 95c34079 (d4210000) 
---[ end trace 7533385e34e0eeb4 ]---

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/11 14:52 linux-5.15.y 14e468424d3e 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: corrupted list in p9_fd_cancelled
* Struck through repros no longer work on HEAD.