------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88805acebd58, owner = 0x0, curr 0xffff888028a3d940, list empty WARNING: CPU: 0 PID: 5772 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline] WARNING: CPU: 0 PID: 5772 at kernel/locking/rwsem.c:1372 up_write+0x4f5/0x580 kernel/locking/rwsem.c:1626 Modules linked in: CPU: 0 PID: 5772 Comm: syz.1.458 Not tainted 6.1.98-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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 e0 f5 eb 8a 48 c7 c6 20 f8 eb 8a 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 7f d6 e8 ff 48 83 c4 08 <0f> 0b e9 71 fd ff ff 48 c7 c1 28 b6 73 8e 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc90005797bc0 EFLAGS: 00010296 RAX: bf65e9ea9e760100 RBX: ffffffff8aebf6c0 RCX: 0000000000040000 RDX: ffffc90005401000 RSI: 00000000000116bc RDI: 00000000000116bd RBP: ffffc90005797c90 R08: ffffffff8152936e R09: fffff52000af2ed9 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88805acebd58 R14: 1ffff92000af2f80 R15: dffffc0000000000 FS: 00007f0fad7de6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020221000 CR3: 00000000603ee000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_unlock include/linux/fs.h:763 [inline] chown_common+0x5b7/0x900 fs/open.c:738 do_fchownat+0x169/0x240 fs/open.c:767 __do_sys_lchown fs/open.c:792 [inline] __se_sys_lchown fs/open.c:790 [inline] __x64_sys_lchown+0x81/0x90 fs/open.c:790 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0fac975bd9 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:00007f0fad7de048 EFLAGS: 00000246 ORIG_RAX: 000000000000005e RAX: ffffffffffffffda RBX: 00007f0facb04038 RCX: 00007f0fac975bd9 RDX: 0000000000000000 RSI: 000000000000ee00 RDI: 0000000020000040 RBP: 00007f0fac9e4e60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f0facb04038 R15: 00007ffed78e95e8