------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88805c22c410, owner = 0x0, curr 0xffff888021543c00, list empty WARNING: CPU: 1 PID: 12074 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline] WARNING: CPU: 1 PID: 12074 at kernel/locking/rwsem.c:1370 up_write+0x502/0x590 kernel/locking/rwsem.c:1632 Modules linked in: CPU: 1 PID: 12074 Comm: syz-executor.4 Not tainted 6.10.0-rc2-syzkaller-00022-g32f88d65f01b #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+0x502/0x590 kernel/locking/rwsem.c:1632 Code: c7 c7 c0 ad ca 8b 48 c7 c6 40 b0 ca 8b 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 73 a6 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 20 4c ac 8f 80 e1 07 80 c1 03 RSP: 0018:ffffc90004b97ba0 EFLAGS: 00010296 RAX: 3eb64560e0f9f500 RBX: ffffffff8bcaaea0 RCX: 0000000000040000 RDX: ffffc9000c6c4000 RSI: 0000000000014455 RDI: 0000000000014456 RBP: ffffc90004b97c70 R08: ffffffff815846c2 R09: 1ffff110172a519a R10: dffffc0000000000 R11: ffffed10172a519b R12: 0000000000000000 R13: ffff88805c22c410 R14: 1ffff92000972f7c R15: dffffc0000000000 FS: 00007fe8180036c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe35241d000 CR3: 0000000029d32000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_unlock include/linux/fs.h:796 [inline] chown_common+0x50e/0x850 fs/open.c:792 do_fchownat+0x16d/0x250 fs/open.c:821 __do_sys_lchown fs/open.c:846 [inline] __se_sys_lchown fs/open.c:844 [inline] __x64_sys_lchown+0x85/0xa0 fs/open.c:844 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: 0033:0x7fe81727cee9 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:00007fe8180030c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005e RAX: ffffffffffffffda RBX: 00007fe8173b4120 RCX: 00007fe81727cee9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007fe8172da6fe R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fe8173b4120 R15: 00007ffdca0cf758