IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 8293 Comm: syz-executor395 Not tainted 4.14.272-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x14b/0x1e7 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.2+0x105/0x144 lib/fault-inject.c:149 should_failslab+0xba/0xf0 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node_trace+0x25b/0x3f0 mm/slab.c:3659 kmalloc_node include/linux/slab.h:526 [inline] kzalloc_node include/linux/slab.h:672 [inline] sbitmap_queue_init_node lib/sbitmap.c:313 [inline] sbitmap_queue_init_node+0x22d/0x540 lib/sbitmap.c:289 bt_alloc block/blk-mq-tag.c:365 [inline] blk_mq_init_bitmap_tags block/blk-mq-tag.c:377 [inline] blk_mq_init_tags+0x146/0x280 block/blk-mq-tag.c:407 blk_mq_alloc_rq_map+0x82/0x1e0 block/blk-mq.c:1813 blk_mq_sched_alloc_tags.isra.3+0x76/0x150 block/blk-mq-sched.c:440 blk_mq_sched_init_hctx+0x8b/0x190 block/blk-mq-sched.c:471 blk_mq_init_hctx block/blk-mq.c:2039 [inline] blk_mq_realloc_hw_ctxs+0x667/0xe90 block/blk-mq.c:2380 __blk_mq_update_nr_hw_queues block/blk-mq.c:2751 [inline] blk_mq_update_nr_hw_queues+0x1ca/0x390 block/blk-mq.c:2762 nbd_start_device+0x1b6/0xc50 drivers/block/nbd.c:1201 nbd_start_device_ioctl drivers/block/nbd.c:1252 [inline] __nbd_ioctl drivers/block/nbd.c:1334 [inline] nbd_ioctl+0x1ae/0xad0 drivers/block/nbd.c:1374 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x7c0/0x1760 block/ioctl.c:594 block_ioctl+0xd7/0x130 fs/block_dev.c:1893 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x180/0xfb0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x74/0x80 fs/ioctl.c:692 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f8704f8adc9 RSP: 002b:00007ffcb7ec46e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f8704f8adc9 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 RBP: 00007ffcb7ec46f0 R08: 0000000000000002 R09: 00007f8704003631 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 BUG: unable to handle kernel NULL pointer dereference at 0000000000000120 IP: set_bit arch/x86/include/asm/bitops.h:81 [inline] IP: cpumask_set_cpu include/linux/cpumask.h:283 [inline] IP: blk_mq_map_swqueue+0x23a/0xa60 block/blk-mq.c:2171 PGD aa978067 P4D aa978067 PUD aa979067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 8293 Comm: syz-executor395 Not tainted 4.14.272-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880ab38c440 task.stack: ffff8880aac30000 RIP: 0010:set_bit arch/x86/include/asm/bitops.h:81 [inline] RIP: 0010:cpumask_set_cpu include/linux/cpumask.h:283 [inline] RIP: 0010:blk_mq_map_swqueue+0x23a/0xa60 block/blk-mq.c:2171 RSP: 0018:ffff8880aac379e0 EFLAGS: 00010297 RAX: ffff8880ae92eb88 RBX: 0000000000000007 RCX: ffffe8ffffd35240 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8880aac37a58 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ae92eb80 R11: ffff8880ae92ec40 R12: ffff8880ae95c780 R13: fffffbfff14122ee R14: ffff8880ae9c50b0 R15: dffffc0000000000 FS: 00005555574d1300(0000) GS:ffff8880ba700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000120 CR3: 00000000ab3ff000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_mq_queue_reinit block/blk-mq.c:2514 [inline] __blk_mq_update_nr_hw_queues block/blk-mq.c:2752 [inline] blk_mq_update_nr_hw_queues+0x219/0x390 block/blk-mq.c:2762 nbd_start_device+0x1b6/0xc50 drivers/block/nbd.c:1201 nbd_start_device_ioctl drivers/block/nbd.c:1252 [inline] __nbd_ioctl drivers/block/nbd.c:1334 [inline] nbd_ioctl+0x1ae/0xad0 drivers/block/nbd.c:1374 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x7c0/0x1760 block/ioctl.c:594 block_ioctl+0xd7/0x130 fs/block_dev.c:1893 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x180/0xfb0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x74/0x80 fs/ioctl.c:692 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f8704f8adc9 RSP: 002b:00007ffcb7ec46e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f8704f8adc9 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 RBP: 00007ffcb7ec46f0 R08: 0000000000000002 R09: 00007f8704003631 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: 0f 85 11 05 00 00 8b 00 49 8d 04 c2 48 89 c6 48 c1 ee 03 42 80 3c 3e 00 0f 85 cc 04 00 00 41 83 f8 07 48 8b 30 0f 87 f3 03 00 00 4c 0f ab 8e 20 01 00 00 48 8d be 78 01 00 00 48 89 f8 48 c1 RIP: set_bit arch/x86/include/asm/bitops.h:81 [inline] RSP: ffff8880aac379e0 RIP: cpumask_set_cpu include/linux/cpumask.h:283 [inline] RSP: ffff8880aac379e0 RIP: blk_mq_map_swqueue+0x23a/0xa60 block/blk-mq.c:2171 RSP: ffff8880aac379e0 CR2: 0000000000000120 ---[ end trace c573571a7a36e87e ]--- ---------------- Code disassembly (best guess): 0: 0f 85 11 05 00 00 jne 0x517 6: 8b 00 mov (%rax),%eax 8: 49 8d 04 c2 lea (%r10,%rax,8),%rax c: 48 89 c6 mov %rax,%rsi f: 48 c1 ee 03 shr $0x3,%rsi 13: 42 80 3c 3e 00 cmpb $0x0,(%rsi,%r15,1) 18: 0f 85 cc 04 00 00 jne 0x4ea 1e: 41 83 f8 07 cmp $0x7,%r8d 22: 48 8b 30 mov (%rax),%rsi 25: 0f 87 f3 03 00 00 ja 0x41e * 2b: f0 4c 0f ab 8e 20 01 lock bts %r9,0x120(%rsi) <-- trapping instruction 32: 00 00 34: 48 8d be 78 01 00 00 lea 0x178(%rsi),%rdi 3b: 48 89 f8 mov %rdi,%rax 3e: 48 rex.W 3f: c1 .byte 0xc1