WARNING: CPU: 1 PID: 17936 at fs/fuse/dev.c:390 request_end+0x82e/0xaa0 fs/fuse/dev.c:390
Kernel panic - not syncing: panic_on_warn set ...

kobject: 'loop3' (00000000640babc5): fill_kobj_path: path = '/devices/virtual/block/loop3'
CPU: 1 PID: 17936 Comm: syz-executor4 Not tainted 4.19.0-rc7+ #277
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:request_end+0x82e/0xaa0 fs/fuse/dev.c:390
Code: 3c 03 0f 8f 6f fe ff ff 48 8b bd f0 fe ff ff e8 78 63 3b ff e9 5e fe ff ff e8 3e f3 f7 fe 0f 0b e9 b0 fa ff ff e8 32 f3 f7 fe <0f> 0b e9 f0 fa ff ff e8 36 ca c1 fe e8 71 63 3b ff e9 5b fb ff ff
RSP: 0018:ffff88019957f378 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88018b2d4a00 RCX: ffffc90005945000
RDX: 000000000000010c RSI: ffffffff8286e25e RDI: 0000000000000007
RBP: ffff88019957f4a8 R08: ffff8801c71a4680 R09: ffffed003930d257
R10: ffffed003930d257 R11: ffff8801c98692bb R12: 1ffff100332afe74
R13: ffff8801c9869240 R14: ffff88018b2d4a30 R15: ffff88019957f480
 fuse_dev_do_write+0x192e/0x36e0 fs/fuse/dev.c:1915
 fuse_dev_write+0x19a/0x240 fs/fuse/dev.c:1939
 call_write_iter include/linux/fs.h:1808 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x6b8/0x9f0 fs/read_write.c:487
 vfs_write+0x1fc/0x560 fs/read_write.c:549
 ksys_write+0x101/0x260 fs/read_write.c:598
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:607
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457519
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff779397c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457519
RDX: 0000000000000078 RSI: 0000000020000680 RDI: 0000000000000004
RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff7793986d4
R13: 00000000004c4f1f R14: 00000000004d8538 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..