syzbot


WARNING in vfs_utimes (2)

Status: moderation: reported on 2024/04/30 22:51
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+5b8c8b3f1e91fe1406f4@syzkaller.appspotmail.com
First crash: 48d, last: 2d01h
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in vfs_utimes gfs2 1 273d 186d 0/27 auto-obsoleted due to no activity on 2023/12/27 15:11

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888078633e30, owner = 0x0, curr 0xffff88807cae0000, list empty
WARNING: CPU: 1 PID: 6519 at kernel/locking/rwsem.c:1369 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 1 PID: 6519 at kernel/locking/rwsem.c:1369 up_write+0x469/0x520 kernel/locking/rwsem.c:1632
Modules linked in:
CPU: 1 PID: 6519 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-12398-gc13320499ba0 #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+0x469/0x520 kernel/locking/rwsem.c:1632
Code: ea 03 80 3c 02 00 75 53 48 8b 13 4d 89 f1 41 55 4d 89 f8 4c 89 e1 48 c7 c6 a0 a5 2c 8b 48 c7 c7 c0 a4 2c 8b e8 08 7e e5 ff 90 <0f> 0b 90 90 5a e9 96 fc ff ff 48 89 ef e8 95 39 7f 00 e9 03 fd ff
RSP: 0018:ffffc900034bfc28 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888078633e30 RCX: ffffc9000a8cd000
RDX: 0000000000040000 RSI: ffffffff814ff016 RDI: 0000000000000001
RBP: ffff888078633e38 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888078633e30
R13: ffffffff8b2ca400 R14: ffff88807cae0000 R15: 0000000000000000
FS:  00007f4a037136c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555abb7978 CR3: 000000007cb70000 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]
 vfs_utimes+0x429/0x840 fs/utimes.c:68
 do_utimes_path+0x114/0x1c0 fs/utimes.c:99
 do_utimes fs/utimes.c:145 [inline]
 __do_sys_utime fs/utimes.c:226 [inline]
 __se_sys_utime fs/utimes.c:215 [inline]
 __x64_sys_utime+0x17e/0x200 fs/utimes.c:215
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4a02a7cee9
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:00007f4a037130c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000084
RAX: ffffffffffffffda RBX: 00007f4a02bac050 RCX: 00007f4a02a7cee9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000020000040
RBP: 00007f4a02ac949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4a02bac050 R15: 00007fff1e3c2968
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/27 01:16 upstream c13320499ba0 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in vfs_utimes
2024/04/26 22:49 upstream c942a0cd3603 059e9963 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in vfs_utimes
2024/06/12 10:58 linux-next a957267fa7e9 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in vfs_utimes
2024/05/19 18:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fda5695d692c c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in vfs_utimes
* Struck through repros no longer work on HEAD.