syzbot


WARNING in do_new_mount

Status: auto-obsoleted due to no activity on 2023/11/07 02:18
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+f75d4c6ebd2f1c6693ae@syzkaller.appspotmail.com
First crash: 333d, last: 311d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in do_new_mount 2 298d 316d 0/3 auto-obsoleted due to no activity on 2023/11/29 20:19
linux-6.1 WARNING in do_new_mount 3 6d13h 72d 0/3 upstream: reported on 2024/04/04 01:32
upstream WARNING in do_new_mount (2) fs 13 4d14h 68d 0/27 moderation: reported on 2024/04/07 12:38

Sample crash report:
WARNING: CPU: 1 PID: 6376 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 1 PID: 6376 at kernel/locking/rwsem.c:1370 up_write+0x4f4/0x580 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 1 PID: 6376 Comm: syz-executor.3 Not tainted 6.5.0-rc5-syzkaller-00053-g13b937206866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline]
RIP: 0010:up_write+0x4f4/0x580 kernel/locking/rwsem.c:1626
Code: 48 c7 c7 a0 8b 0a 8b 48 c7 c6 e0 8d 0a 8b 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 30 59 e8 ff 48 83 c4 08 <0f> 0b e9 75 fd ff ff 48 c7 c1 08 a3 98 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000321fc80 EFLAGS: 00010292
RAX: 7425fe3e3cdb2900 RBX: ffffffff8b0a8c80 RCX: 0000000000040000
RDX: ffffc9000b702000 RSI: 0000000000009656 RDI: 0000000000009657
RBP: ffffc9000321fd50 R08: ffffffff8152d442 R09: 1ffff92000643f08
R10: dffffc0000000000 R11: fffff52000643f09 R12: 0000000000000000
R13: ffff8880378c11f0 R14: 1ffff92000643f98 R15: dffffc0000000000
FS:  00007f27aff306c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f099ccc56be CR3: 0000000077b61000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:776 [inline]
 unlock_mount fs/namespace.c:2508 [inline]
 do_new_mount_fc fs/namespace.c:3284 [inline]
 do_new_mount+0x854/0xae0 fs/namespace.c:3337
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f27af27cae9
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:00007f27aff300c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f27af39c050 RCX: 00007f27af27cae9
RDX: 0000000020000000 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f27af2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f27af39c050 R15: 00007ffe634b7c78
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/08/09 02:18 upstream 13b937206866 9552ae77 .config console log report info ci2-upstream-fs WARNING in do_new_mount
2023/08/02 22:28 upstream 4b954598a47b b178af49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_new_mount
2023/07/28 07:46 upstream 57012c57536f 92476829 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_new_mount
2023/07/17 14:17 upstream fdf0eaf11452 20f8b3c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in do_new_mount
* Struck through repros no longer work on HEAD.