syzbot


WARNING in do_new_mount (2)

Status: moderation: reported on 2024/04/07 12:38
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+09fc86179e479877bd90@syzkaller.appspotmail.com
First crash: 48d, last: 3d14h
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in do_new_mount 2 274d 291d 0/3 auto-obsoleted due to no activity on 2023/11/29 20:19
upstream WARNING in do_new_mount fs 4 286d 305d 0/26 auto-obsoleted due to no activity on 2023/11/07 02:18
linux-6.1 WARNING in do_new_mount 2 41d 47d 0/3 upstream: reported on 2024/04/04 01:32

Sample crash report:
WARNING: CPU: 1 PID: 20585 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 1 PID: 20585 at kernel/locking/rwsem.c:1370 up_write+0x502/0x590 kernel/locking/rwsem.c:1632
Modules linked in:
CPU: 1 PID: 20585 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-08410-gff2632d7d08e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline]
RIP: 0010:up_write+0x502/0x590 kernel/locking/rwsem.c:1632
Code: c7 c7 40 a9 ca 8b 48 c7 c6 c0 ab ca 8b 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 73 90 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 b0 e2 ab 8f 80 e1 07 80 c1 03
RSP: 0018:ffffc90004367c60 EFLAGS: 00010296
RAX: 6a539fad76aa0100 RBX: ffffffff8bcaaa20 RCX: 0000000000040000
RDX: ffffc9000c350000 RSI: 00000000000125ea RDI: 00000000000125eb
RBP: ffffc90004367d30 R08: ffffffff81585562 R09: fffffbfff1c3995c
R10: dffffc0000000000 R11: fffffbfff1c3995c R12: 0000000000000000
R13: ffff88805e920e50 R14: 1ffff9200086cf94 R15: dffffc0000000000
FS:  00007f061211e6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33924000 CR3: 0000000022bd4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:796 [inline]
 unlock_mount fs/namespace.c:2514 [inline]
 do_new_mount_fc fs/namespace.c:3295 [inline]
 do_new_mount+0x88e/0xb40 fs/namespace.c:3354
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f061147cee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f061211e0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f06115ac050 RCX: 00007f061147cee9
RDX: 0000000020000280 RSI: 0000000020000400 RDI: 0000000000000000
RBP: 00007f06114c949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f06115ac050 R15: 00007ffd5f702348
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/18 07:26 upstream ff2632d7d08e c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in do_new_mount
2024/05/18 07:26 upstream ff2632d7d08e c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in do_new_mount
2024/04/25 03:52 upstream e88c4cfcb7b8 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_new_mount
2024/04/19 19:47 upstream 3cdb45594619 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_new_mount
2024/04/03 12:32 upstream fe46a7dd189e 7925100d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_new_mount
2024/04/13 23:58 linux-next 9ed46da14b9b c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in do_new_mount
2024/04/05 07:16 linux-next 2b3d5988ae2c 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in do_new_mount
* Struck through repros no longer work on HEAD.