kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN NOPTI
Modules linked in:
CPU: 1 PID: 16217 Comm: syz-executor0 Not tainted 4.14.88+ #23
task: ffff88819b171780 task.stack: ffff88819e1a0000
RIP: 0010:bdev_get_queue include/linux/blkdev.h:1015 [inline]
RIP: 0010:bdev_logical_block_size include/linux/blkdev.h:1451 [inline]
RIP: 0010:bd_set_size+0x58/0x320 fs/block_dev.c:1396
RSP: 0018:ffff88819e1a7810 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1103362e3f5
RDX: 00000000000000a7 RSI: 0000000000000000 RDI: 0000000000000538
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffffb4aca751
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d53f33c0
R13: ffff8881d53f33c0 R14: ffff8881c610a9c8 R15: ffff8881c610aba8
FS:  00007fa7bafef700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fefd878ba20 CR3: 0000000148826001 CR4: 00000000001606a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 loop_clr_fd+0x465/0xac0 drivers/block/loop.c:1057
 __lo_release drivers/block/loop.c:1618 [inline]
 lo_release+0xfd/0x190 drivers/block/loop.c:1636
 __blkdev_put+0x526/0x6e0 fs/block_dev.c:1783
 blkdev_close+0x86/0xb0 fs/block_dev.c:1855
 __fput+0x25e/0x6f0 fs/file_table.c:210
 task_work_run+0x116/0x190 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x8fb/0x28c0 kernel/exit.c:865
 do_group_exit+0x100/0x2e0 kernel/exit.c:968
 get_signal+0x4e5/0x1470 kernel/signal.c:2348
 do_signal+0x8f/0x1660 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x116/0x150 arch/x86/entry/common.c:159
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:267 [inline]
 do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x457659
RSP: 002b:00007fa7bafeecf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000072c0e8 RCX: 0000000000457659
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072c0e8
RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072c0ec
R13: 00007ffd2fcffa4f R14: 00007fa7bafef9c0 R15: 000000000072c0ec
Code: 03 80 3c 02 00 0f 85 a4 02 00 00 49 8b 9c 24 e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 38 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 70 02 00 00 4d 8d 6c 24 08 48 8b 9b 38 05 00 
RIP: bdev_get_queue include/linux/blkdev.h:1015 [inline] RSP: ffff88819e1a7810
RIP: bdev_logical_block_size include/linux/blkdev.h:1451 [inline] RSP: ffff88819e1a7810
RIP: bd_set_size+0x58/0x320 fs/block_dev.c:1396 RSP: ffff88819e1a7810
---[ end trace 24db8eb38ba73ae5 ]---