FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057] CPU: 0 PID: 50 Comm: kworker/0:1H Not tainted 5.10.109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: kblockd blk_mq_run_work_fn RIP: 0010:relay_switch_subbuf+0x216/0x940 kernel/relay.c:761 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 cf 06 00 00 48 ba 00 00 00 00 00 fc ff df 4c 8b 73 68 49 8d 7e 50 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 8e 06 00 00 49 8b 55 28 49 8b 5e 50 48 b9 00 00 RSP: 0018:ffff88800b76f770 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: ffff88801ab5fd60 RCX: 000000000000000a RDX: dffffc0000000000 RSI: ffffffff814113ee RDI: 0000000000000050 RBP: 00000000000000b0 R08: 1ffff11001a10081 R09: ffffc90011a7213f R10: 0000000000000100 R11: 0000000000000001 R12: 0000000000000040 R13: ffff88800edf5a00 R14: 0000000000000000 R15: 0000000000000100 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cc23000 CR3: 000000004bdd0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: relay_reserve include/linux/relay.h:261 [inline] trace_note.constprop.0+0x42f/0x550 kernel/trace/blktrace.c:95 trace_note_tsk kernel/trace/blktrace.c:126 [inline] __blk_add_trace.constprop.0+0xa7a/0xbd0 kernel/trace/blktrace.c:266 blk_add_trace_rq.constprop.0+0x362/0x470 kernel/trace/blktrace.c:844 trace_block_rq_issue include/trace/events/block.h:207 [inline] blk_mq_start_request+0x20d/0x480 block/blk-mq.c:734 loop_queue_rq+0x75/0x260 drivers/block/loop.c:1999 blk_mq_dispatch_rq_list+0x36d/0x1be0 block/blk-mq.c:1369 __blk_mq_do_dispatch_sched+0x3bf/0x8e0 block/blk-mq-sched.c:187 blk_mq_do_dispatch_sched block/blk-mq-sched.c:200 [inline] __blk_mq_sched_dispatch_requests+0x361/0x490 block/blk-mq-sched.c:316 blk_mq_sched_dispatch_requests+0xfb/0x180 block/blk-mq-sched.c:342 __blk_mq_run_hw_queue+0x12c/0x290 block/blk-mq.c:1517 blk_mq_run_work_fn+0x55/0x70 block/blk-mq.c:1795 process_one_work+0x9a9/0x1590 kernel/workqueue.c:2279 worker_thread+0x61d/0x1310 kernel/workqueue.c:2425 kthread+0x38f/0x470 kernel/kthread.c:313 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296 Modules linked in: ---[ end trace b6f8f6639f3927d1 ]--- RIP: 0010:relay_switch_subbuf+0x216/0x940 kernel/relay.c:761 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 cf 06 00 00 48 ba 00 00 00 00 00 fc ff df 4c 8b 73 68 49 8d 7e 50 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 8e 06 00 00 49 8b 55 28 49 8b 5e 50 48 b9 00 00 RSP: 0018:ffff88800b76f770 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: ffff88801ab5fd60 RCX: 000000000000000a RDX: dffffc0000000000 RSI: ffffffff814113ee RDI: 0000000000000050 RBP: 00000000000000b0 R08: 1ffff11001a10081 R09: ffffc90011a7213f R10: 0000000000000100 R11: 0000000000000001 R12: 0000000000000040 R13: ffff88800edf5a00 R14: 0000000000000000 R15: 0000000000000100 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cc23000 CR3: 000000004bdd0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 note: kworker/0:1H[50] exited with preempt_count 5 BUG: sleeping function called from invalid context at include/linux/percpu-rwsem.h:49 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 50, name: kworker/0:1H INFO: lockdep is turned off. irq event stamp: 617314 hardirqs last enabled at (617313): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (617313): [] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199 hardirqs last disabled at (617314): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (617314): [] _raw_spin_lock_irqsave+0x4b/0x50 kernel/locking/spinlock.c:159 softirqs last enabled at (617272): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (617263): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 50 Comm: kworker/0:1H Tainted: G D 5.10.109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: kblockd blk_mq_run_work_fn Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 ___might_sleep.cold+0x141/0x16f kernel/sched/core.c:7291 percpu_down_read include/linux/percpu-rwsem.h:49 [inline] cgroup_threadgroup_change_begin include/linux/cgroup-defs.h:733 [inline] exit_signals+0x23/0x850 kernel/signal.c:2833 device veth0_vlan entered promiscuous mode do_exit+0x30a/0x2770 kernel/exit.c:767 rewind_stack_do_exit+0x17/0x20 arch/x86/entry/entry_64.S:1482 RIP: 0000:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 isofs_fill_super: bread failed, dev=loop3, iso_blknum=64, block=128 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) isofs_fill_super: bread failed, dev=loop3, iso_blknum=64, block=128 ---------------- Code disassembly (best guess): 0: 48 89 fa mov %rdi,%rdx 3: 48 c1 ea 03 shr $0x3,%rdx 7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) b: 0f 85 cf 06 00 00 jne 0x6e0 11: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 18: fc ff df 1b: 4c 8b 73 68 mov 0x68(%rbx),%r14 1f: 49 8d 7e 50 lea 0x50(%r14),%rdi 23: 48 89 f9 mov %rdi,%rcx 26: 48 c1 e9 03 shr $0x3,%rcx * 2a: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) <-- trapping instruction 2e: 0f 85 8e 06 00 00 jne 0x6c2 34: 49 8b 55 28 mov 0x28(%r13),%rdx 38: 49 8b 5e 50 mov 0x50(%r14),%rbx 3c: 48 rex.W 3d: b9 .byte 0xb9