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: 25d, last: 2d07h
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in vfs_utimes gfs2 1 250d 162d 0/26 auto-obsoleted due to no activity on 2023/12/27 15:11

Sample crash report:
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88805a404ac8, owner = 0x0, curr 0xffff88801cf39e00, list empty
WARNING: CPU: 1 PID: 5294 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 1 PID: 5294 at kernel/locking/rwsem.c:1370 up_write+0x502/0x590 kernel/locking/rwsem.c:1632
Modules linked in:
CPU: 1 PID: 5294 Comm: syz-executor.1 Not tainted 6.9.0-rc5-syzkaller-00159-gc942a0cd3603 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline]
RIP: 0010:up_write+0x502/0x590 kernel/locking/rwsem.c:1632
Code: c7 c7 20 ac ca 8b 48 c7 c6 a0 ae ca 8b 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 c3 b6 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 f0 05 a8 8f 80 e1 07 80 c1 03
RSP: 0018:ffffc90004b77b80 EFLAGS: 00010292
RAX: e2802a8d540c8a00 RBX: ffffffff8bcaad00 RCX: 0000000000040000
RDX: ffffc90009aa9000 RSI: 000000000000c999 RDI: 000000000000c99a
RBP: ffffc90004b77c50 R08: ffffffff81587f92 R09: fffffbfff1c39b48
R10: dffffc0000000000 R11: fffffbfff1c39b48 R12: 0000000000000000
R13: ffff88805a404ac8 R14: 1ffff9200096ef78 R15: dffffc0000000000
FS:  00007f77f83156c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020002000 CR3: 000000002296a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:800 [inline]
 vfs_utimes+0x4c2/0x770 fs/utimes.c:68
 do_utimes_path fs/utimes.c:99 [inline]
 do_utimes fs/utimes.c:145 [inline]
 do_futimesat fs/utimes.c:199 [inline]
 __do_sys_utimes fs/utimes.c:212 [inline]
 __se_sys_utimes+0x197/0x380 fs/utimes.c:209
 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: 0033:0x7f77f767dea9
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:00007f77f83150c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000eb
RAX: ffffffffffffffda RBX: 00007f77f77ac050 RCX: 00007f77f767dea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000380
RBP: 00007f77f76ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f77f77ac050 R15: 00007fffb6e7ea68
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2024/05/19 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.