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: 6923 Comm: blkid Not tainted 4.14.85+ #15 task: ffff88819f419780 task.stack: ffff8881c61a0000 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:ffff8881c61a7c78 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11033e833f5 RDX: 00000000000000a7 RSI: 0000000000000000 RDI: 0000000000000538 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffffaa0c7c91 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d9aad080 R13: ffff8881d9aad080 R14: ffff8881a52005c8 R15: ffff8881a52007a8 FS: 00007fcf609f3740(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c4262b1000 CR3: 00000001c66f8001 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 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x12e/0x150 arch/x86/entry/common.c:163 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: 0033:0x7fcf602fb2b0 RSP: 002b:00007ffd1688d338 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fcf602fb2b0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001d4e030 R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000005 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: ffff8881c61a7c78 RIP: bdev_logical_block_size include/linux/blkdev.h:1451 [inline] RSP: ffff8881c61a7c78 RIP: bd_set_size+0x58/0x320 fs/block_dev.c:1396 RSP: ffff8881c61a7c78 ---[ end trace 728b0135826d2160 ]---