syzbot


WARNING in do_mkdirat

Status: upstream: reported on 2023/07/05 09:42
Reported-by: syzbot+6cd29b19d3109c39bb93@syzkaller.appspotmail.com
First crash: 468d, last: 43d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in do_mkdirat 7 330d 554d 0/3 auto-obsoleted due to no activity on 2024/02/28 16:21
linux-6.1 WARNING in do_mkdirat (2) 56 4d10h 203d 0/3 upstream: reported on 2024/03/27 02:15
upstream WARNING in do_mkdirat fs C error error 229 4d18h 682d 0/28 upstream: reported C repro on 2022/12/03 14:52

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888060482810, owner = 0x0, curr 0xffff8880245fbb80, list empty
WARNING: CPU: 0 PID: 7688 at kernel/locking/rwsem.c:1350 __up_write kernel/locking/rwsem.c:1349 [inline]
WARNING: CPU: 0 PID: 7688 at kernel/locking/rwsem.c:1350 up_write+0x4f5/0x580 kernel/locking/rwsem.c:1604
Modules linked in:
CPU: 0 PID: 7688 Comm: syz.0.727 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__up_write kernel/locking/rwsem.c:1349 [inline]
RIP: 0010:up_write+0x4f5/0x580 kernel/locking/rwsem.c:1604
Code: 48 c7 c7 a0 1d 8b 8a 48 c7 c6 60 20 8b 8a 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 cf 0d ea ff 48 83 c4 08 <0f> 0b e9 71 fd ff ff 48 c7 c1 48 86 e9 8d 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90003617d60 EFLAGS: 00010296
RAX: e9b3c5c087e5c000 RBX: ffffffff8a8b1e80 RCX: 0000000000040000
RDX: ffffc9000c48e000 RSI: 000000000002a0c2 RDI: 000000000002a0c3
RBP: ffffc90003617e30 R08: ffffffff816689dc R09: ffffed10172067a8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff888060482810 R14: 1ffff920006c2fb4 R15: dffffc0000000000
FS:  00007efc46cc86c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc46a86000 CR3: 000000001f831000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:794 [inline]
 done_path_create fs/namei.c:3886 [inline]
 do_mkdirat+0x2c2/0x520 fs/namei.c:4093
 __do_sys_mkdir fs/namei.c:4110 [inline]
 __se_sys_mkdir fs/namei.c:4108 [inline]
 __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4108
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7efc4886ceb9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efc46cc8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007efc48a09058 RCX: 00007efc4886ceb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007efc488da93e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007efc48a09058 R15: 00007ffc36e21428
 </TASK>

Crashes (16):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/03 01:45 linux-5.15.y fa93fa65db6e 8045124c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/08/14 17:46 linux-5.15.y 7e89efd3ae1c e6b88e20 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/08/03 01:32 linux-5.15.y 7e89efd3ae1c 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/07/24 19:28 linux-5.15.y 7c6d66f0266f d1a1b0ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/07/24 06:04 linux-5.15.y 7c6d66f0266f 57b2edb1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/07/14 23:29 linux-5.15.y f45bea23c39c eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/04/12 17:36 linux-5.15.y cdfd0a7f0139 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/01/04 14:05 linux-5.15.y d93fa2c78854 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2023/09/19 21:20 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in do_mkdirat
2024/06/21 16:10 linux-5.15.y 4878aadf2d15 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in do_mkdirat
2024/06/07 13:24 linux-5.15.y c61bd26ae81a 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in do_mkdirat
2024/04/06 19:42 linux-5.15.y 9465fef4ae35 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in do_mkdirat
2023/10/30 18:41 linux-5.15.y 12952a23a5da b5729d82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in do_mkdirat
2023/10/03 07:23 linux-5.15.y b911329317b4 65faba36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in do_mkdirat
2023/08/28 14:30 linux-5.15.y 5ddfe5cc8716 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in do_mkdirat
2023/07/05 09:42 linux-5.15.y 4af60700a60c 80298b6f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in do_mkdirat
* Struck through repros no longer work on HEAD.