------------[ cut here ]------------ WARNING: CPU: 1 PID: 593 at fs/fuse/file.c:1835 spin_unlock include/linux/spinlock.h:403 [inline] WARNING: CPU: 1 PID: 593 at fs/fuse/file.c:1835 __fuse_write_file_get fs/fuse/file.c:1827 [inline] WARNING: CPU: 1 PID: 593 at fs/fuse/file.c:1835 fuse_write_file_get fs/fuse/file.c:1834 [inline] WARNING: CPU: 1 PID: 593 at fs/fuse/file.c:1835 fuse_writepages_fill+0x1665/0x1e30 fs/fuse/file.c:2140 Modules linked in: CPU: 1 PID: 593 Comm: kworker/u4:3 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: writeback wb_workfn (flush-0:40) RIP: 0010:fuse_write_file_get fs/fuse/file.c:1835 [inline] RIP: 0010:fuse_write_file_get fs/fuse/file.c:1832 [inline] RIP: 0010:fuse_writepages_fill+0x1665/0x1e30 fs/fuse/file.c:2140 Code: 91 c0 27 ff 4c 8b 44 24 20 e9 79 eb ff ff 4c 89 44 24 20 e8 7d c0 27 ff 4c 8b 44 24 20 e9 91 eb ff ff 4c 89 e7 e8 3b 9f e5 05 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 18 48 c1 ea 03 80 RSP: 0018:ffffc9000348f3c8 EFLAGS: 00010286 RAX: 0000000080000000 RBX: ffffc9000348f630 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888073a585e3 R10: ffffed100e74b0bc R11: 000000000007a089 R12: ffff888073a585e0 R13: ffff888073a584c8 R14: ffff88806f359000 R15: ffffc9000348f640 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020005000 CR3: 0000000024a69000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: write_cache_pages+0x53d/0xd40 mm/page-writeback.c:2255 fuse_writepages+0x1a5/0x2c0 fs/fuse/file.c:2242 do_writepages+0x16c/0x6e0 mm/page-writeback.c:2364 __writeback_single_inode+0xd6/0xaf0 fs/fs-writeback.c:1616 writeback_sb_inodes+0x466/0xc50 fs/fs-writeback.c:1881 __writeback_inodes_wb+0xb2/0x200 fs/fs-writeback.c:1950 wb_writeback+0x5a6/0x8b0 fs/fs-writeback.c:2055 wb_check_background_flush fs/fs-writeback.c:2121 [inline] wb_do_writeback fs/fs-writeback.c:2209 [inline] wb_workfn+0x72f/0xf30 fs/fs-writeback.c:2237 process_one_work+0x85b/0x1430 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444 kthread+0x38b/0x460 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295