------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888071d30a90, owner = 0x0, curr 0xffff88801e11bb80, list empty WARNING: CPU: 1 PID: 5020 at kernel/locking/rwsem.c:1342 __up_write kernel/locking/rwsem.c:1341 [inline] WARNING: CPU: 1 PID: 5020 at kernel/locking/rwsem.c:1342 up_write+0x473/0x4d0 kernel/locking/rwsem.c:1594 Modules linked in: CPU: 1 PID: 5020 Comm: syz-executor.3 Not tainted 5.15.146-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:__up_write kernel/locking/rwsem.c:1341 [inline] RIP: 0010:up_write+0x473/0x4d0 kernel/locking/rwsem.c:1594 Code: 48 c7 c7 00 03 8b 8a 48 c7 c6 c0 05 8b 8a 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 a1 12 ea ff 48 83 c4 08 <0f> 0b e9 86 fd ff ff 48 c7 c1 c8 d0 e3 8d 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc90004d0fda0 EFLAGS: 00010296 RAX: 1efb3f2484692c00 RBX: ffffffff8a8b03e0 RCX: 0000000000040000 RDX: ffffc90005aa9000 RSI: 0000000000010f30 RDI: 0000000000010f31 RBP: ffffc90004d0fe78 R08: ffffffff81665dbc R09: ffffed10173667a8 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888071d30a90 R14: 1ffff920009a1fbc R15: dffffc0000000000 FS: 00007f3455ea56c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020040030 CR3: 000000007db02000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_unlock include/linux/fs.h:792 [inline] __generic_file_fsync+0x159/0x190 fs/libfs.c:1120 generic_file_fsync+0x6f/0xe0 fs/libfs.c:1145 vfs_fsync_range fs/sync.c:188 [inline] vfs_fsync fs/sync.c:202 [inline] do_fsync fs/sync.c:212 [inline] __do_sys_fdatasync fs/sync.c:225 [inline] __se_sys_fdatasync fs/sync.c:223 [inline] __x64_sys_fdatasync+0xb1/0x100 fs/sync.c:223 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+0x61/0xcb RIP: 0033:0x7f3457944d29 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:00007f3455ea50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b RAX: ffffffffffffffda RBX: 00007f3457a74050 RCX: 00007f3457944d29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f345799147a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f3457a74050 R15: 00007ffd09ec96a8