RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000402 R14: 00000000004c65b9 R15: 0000000000000009
BUG: unable to handle kernel NULL pointer dereference at 0000000000000118
PGD 8e1e7067 P4D 8e1e7067 PUD 8e3e2067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 14433 Comm: syz-executor.1 Not tainted 4.19.105-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:set_bit arch/x86/include/asm/bitops.h:76 [inline]
RIP: 0010:cpumask_set_cpu include/linux/cpumask.h:311 [inline]
RIP: 0010:blk_mq_map_swqueue+0x29e/0xa60 block/blk-mq.c:2344
Code: 80 3c 18 00 0f 85 e9 06 00 00 44 89 e6 bf 3f 00 00 00 4d 8b 6d 00 e8 31 52 12 fe 41 83 fc 3f 0f 87 17 05 00 00 e8 a2 50 12 fe <f0> 4d 0f ab b5 18 01 00 00 49 8d bd 74 01 00 00 48 89 fa 48 c1 ea
RSP: 0018:ffff88808cee78b8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc900080af000
RDX: 0000000000040000 RSI: ffffffff83588c1e RDI: 0000000000000005
RBP: ffff88808cee7928 R08: ffff888047a745c0 R09: 0000000000000000
R10: ffffed1009a05ff0 R11: ffff88804d02ff83 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880a3eb7100
FS:  00007ff5c556b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000118 CR3: 000000009829f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 blk_mq_queue_reinit block/blk-mq.c:2686 [inline]
 __blk_mq_update_nr_hw_queues block/blk-mq.c:3007 [inline]
 blk_mq_update_nr_hw_queues+0x5ab/0xb70 block/blk-mq.c:3021
 nbd_start_device+0x1f7/0xd00 drivers/block/nbd.c:1200
 nbd_start_device_ioctl drivers/block/nbd.c:1241 [inline]
 __nbd_ioctl drivers/block/nbd.c:1323 [inline]
 nbd_ioctl+0x412/0xcc0 drivers/block/nbd.c:1363
 __blkdev_driver_ioctl block/ioctl.c:303 [inline]
 blkdev_ioctl+0xc2c/0x1ab3 block/ioctl.c:601
 block_ioctl+0xee/0x130 fs/block_dev.c:1894
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c429
Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff5c556ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff5c556b6d4 RCX: 000000000045c429
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000402 R14: 00000000004c65b9 R15: 0000000000000009
Modules linked in:
CR2: 0000000000000118
---[ end trace 701ce5498c3e0149 ]---
RIP: 0010:set_bit arch/x86/include/asm/bitops.h:76 [inline]
RIP: 0010:cpumask_set_cpu include/linux/cpumask.h:311 [inline]
RIP: 0010:blk_mq_map_swqueue+0x29e/0xa60 block/blk-mq.c:2344
Code: 80 3c 18 00 0f 85 e9 06 00 00 44 89 e6 bf 3f 00 00 00 4d 8b 6d 00 e8 31 52 12 fe 41 83 fc 3f 0f 87 17 05 00 00 e8 a2 50 12 fe <f0> 4d 0f ab b5 18 01 00 00 49 8d bd 74 01 00 00 48 89 fa 48 c1 ea
selinux_nlmsg_perm: 8 callbacks suppressed
SELinux: unrecognized netlink message: protocol=4 nlmsg_type=2581 sclass=netlink_tcpdiag_socket pig=14467 comm=syz-executor.2
RSP: 0018:ffff88808cee78b8 EFLAGS: 00010246
SELinux: unrecognized netlink message: protocol=4 nlmsg_type=2581 sclass=netlink_tcpdiag_socket pig=14473 comm=syz-executor.2
RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc900080af000
RDX: 0000000000040000 RSI: ffffffff83588c1e RDI: 0000000000000005
RBP: ffff88808cee7928 R08: ffff888047a745c0 R09: 0000000000000000
R10: ffffed1009a05ff0 R11: ffff88804d02ff83 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880a3eb7100
FS:  00007ff5c556b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f952baf1000 CR3: 000000009829f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400