syzbot

DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff8880635edb48, owner = 0x0, curr 0xffff888025c61e00, list empty
WARNING: CPU: 1 PID: 6368 at kernel/locking/rwsem.c:1368 __up_write kernel/locking/rwsem.c:1367 [inline]
WARNING: CPU: 1 PID: 6368 at kernel/locking/rwsem.c:1368 up_write+0x502/0x590 kernel/locking/rwsem.c:1630
Modules linked in:
CPU: 1 UID: 0 PID: 6368 Comm: syz.1.77 Not tainted 6.12.0-rc6-syzkaller-00192-gf1dce1f09380 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:__up_write kernel/locking/rwsem.c:1367 [inline]
RIP: 0010:up_write+0x502/0x590 kernel/locking/rwsem.c:1630
Code: c7 c7 00 be 0a 8c 48 c7 c6 80 c0 0a 8c 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 c3 3f e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 f0 0f 1c 90 80 e1 07 80 c1 03
RSP: 0018:ffffc9000e567d20 EFLAGS: 00010292
RAX: ad9d881ead1d4d00 RBX: ffffffff8c0abee0 RCX: 0000000000040000
RDX: ffffc9000be23000 RSI: 0000000000009b4b RDI: 0000000000009b4c
RBP: ffffc9000e567df0 R08: ffffffff8155d222 R09: fffffbfff1cf9fd0
R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: 0000000000000000
R13: ffff8880635edb48 R14: 1ffff92001cacfac R15: dffffc0000000000
FS:  00007fddca5f66c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6274fb1000 CR3: 0000000034bf0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:820 [inline]
 done_path_create fs/namei.c:4077 [inline]
 do_mknodat+0x4c5/0x5b0 fs/namei.c:4200
 __do_sys_mknod fs/namei.c:4218 [inline]
 __se_sys_mknod fs/namei.c:4216 [inline]
 __x64_sys_mknod+0x8c/0xa0 fs/namei.c:4216
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddcc17e719
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:00007fddca5f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007fddcc336058 RCX: 00007fddcc17e719
RDX: 0000000000000703 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007fddcc1f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fddcc336058 R15: 00007ffd6e6fec18
 </TASK>