syzbot


WARNING in path_openat

Status: auto-obsoleted due to no activity on 2024/02/19 01:27
Reported-by: syzbot+48baefc22118a92fb649@syzkaller.appspotmail.com
First crash: 584d, last: 387d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in path_openat 2 531d 580d 0/3 auto-obsoleted due to no activity on 2023/09/28 05:21
upstream WARNING in path_openat fs C error done 135 30d 731d 0/28 upstream: reported C repro on 2022/12/02 03:18
linux-5.15 WARNING in path_openat (3) origin:lts-only C 3 8d17h 10d 0/3 upstream: reported C repro on 2024/11/22 02:14
linux-6.1 WARNING in path_openat (2) 12 34d 216d 0/3 upstream: reported on 2024/04/29 18:46
linux-5.15 WARNING in path_openat (2) 4 179d 210d 0/3 auto-obsoleted due to no activity on 2024/09/14 06:15

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88802d833e30, owner = 0x0, curr 0xffff88807596bb80, list empty
WARNING: CPU: 1 PID: 6280 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 1 PID: 6280 at kernel/locking/rwsem.c:1372 up_write+0x4f5/0x580 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 1 PID: 6280 Comm: syz-executor.4 Not tainted 6.1.58-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:__up_write kernel/locking/rwsem.c:1371 [inline]
RIP: 0010:up_write+0x4f5/0x580 kernel/locking/rwsem.c:1626
Code: 48 c7 c7 40 d6 eb 8a 48 c7 c6 80 d8 eb 8a 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 1f e0 e8 ff 48 83 c4 08 <0f> 0b e9 71 fd ff ff 48 c7 c1 28 5c 73 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000ab27840 EFLAGS: 00010292
RAX: 77ae78baab4d2400 RBX: ffffffff8aebd720 RCX: 0000000000040000
RDX: ffffc90005a09000 RSI: 000000000001f413 RDI: 000000000001f414
RBP: ffffc9000ab27910 R08: ffffffff81526dae R09: fffff52001564e69
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88802d833e30 R14: 1ffff92001564f10 R15: dffffc0000000000
FS:  00007f17a34146c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f342b178038 CR3: 000000001ffbc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:761 [inline]
 open_last_lookups fs/namei.c:3485 [inline]
 path_openat+0x1544/0x2e60 fs/namei.c:3711
 do_filp_open+0x230/0x480 fs/namei.c:3741
 do_sys_openat2+0x13b/0x500 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_open fs/open.c:1342 [inline]
 __se_sys_open fs/open.c:1338 [inline]
 __x64_sys_open+0x221/0x270 fs/open.c:1338
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f17a267cae9
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:00007f17a34140c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f17a279c050 RCX: 00007f17a267cae9
RDX: 0000000000000000 RSI: 000000000014937e RDI: 0000000020000180
RBP: 00007f17a26c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f17a279c050 R15: 00007fffa27dc138
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/10/19 13:29 linux-6.1.y adc4d740ad9e 42e1d524 .config console log report info ci2-linux-6-1-kasan WARNING in path_openat
2023/09/20 07:48 linux-6.1.y a356197db198 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in path_openat
2023/11/11 01:26 linux-6.1.y fb2635ac69ab d80eec66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in path_openat
2023/04/27 09:28 linux-6.1.y ca1c9012c941 19a3dabe .config console log report info ci2-linux-6-1-kasan WARNING in path_openat
2023/08/11 16:51 linux-6.1.y 1321ab403b38 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in path_openat
* Struck through repros no longer work on HEAD.