netlink: 8 bytes leftover after parsing attributes in process `syz.1.1478'.
======================================================
WARNING: possible circular locking dependency detected
6.14.0-rc4-syzkaller-00199-g76544811c850 #0 Not tainted
------------------------------------------------------
syz.1.1478/12030 is trying to acquire lock:
ffff888020fe1190 (set->srcu){.+.+}-{0:0}, at: srcu_lock_sync include/linux/srcu.h:176 [inline]
ffff888020fe1190 (set->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x99/0x2a0 kernel/rcu/srcutree.c:1418
but task is already holding lock:
ffff8881447705d8 (&q->sysfs_lock){+.+.}-{4:4}, at: blk_mq_elv_switch_none block/blk-mq.c:4937 [inline]
ffff8881447705d8 (&q->sysfs_lock){+.+.}-{4:4}, at: __blk_mq_update_nr_hw_queues block/blk-mq.c:5018 [inline]
ffff8881447705d8 (&q->sysfs_lock){+.+.}-{4:4}, at: blk_mq_update_nr_hw_queues+0x4a7/0x1360 block/blk-mq.c:5070
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #6 (&q->sysfs_lock){+.+.}-{4:4}:
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19b/0xb10 kernel/locking/mutex.c:730
blk_mq_elv_switch_none block/blk-mq.c:4937 [inline]
__blk_mq_update_nr_hw_queues block/blk-mq.c:5018 [inline]
blk_mq_update_nr_hw_queues+0x4a7/0x1360 block/blk-mq.c:5070
nbd_start_device+0x172/0xcd0 drivers/block/nbd.c:1476
nbd_start_device_ioctl drivers/block/nbd.c:1527 [inline]
__nbd_ioctl drivers/block/nbd.c:1602 [inline]
nbd_ioctl+0x21a/0xd60 drivers/block/nbd.c:1642
blkdev_ioctl+0x276/0x6d0 block/ioctl.c:693
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl fs/ioctl.c:892 [inline]
__x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #5 (&q->q_usage_counter(io)#50){++++}-{0:0}:
bio_queue_enter block/blk.h:77 [inline]
blk_mq_submit_bio+0x20db/0x25f0 block/blk-mq.c:3091
__submit_bio+0x3d1/0x690 block/blk-core.c:628
__submit_bio_noacct_mq block/blk-core.c:715 [inline]
submit_bio_noacct_nocheck+0x698/0xd70 block/blk-core.c:744
submit_bio_noacct+0x50d/0x1ec0 block/blk-core.c:867
mpage_bio_submit_read fs/mpage.c:75 [inline]
mpage_readahead+0x41d/0x590 fs/mpage.c:377
read_pages+0x1a7/0xc60 mm/readahead.c:161
page_cache_ra_unbounded+0x426/0x7d0 mm/readahead.c:298
do_page_cache_ra mm/readahead.c:328 [inline]
force_page_cache_ra+0x24b/0x340 mm/readahead.c:357
page_cache_sync_ra+0x158/0xa30 mm/readahead.c:585
filemap_get_pages+0xb62/0x1c30 mm/filemap.c:2580
filemap_read+0x3c5/0xe70 mm/filemap.c:2691
blkdev_read_iter+0x187/0x4b0 block/fops.c:796
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x886/0xbf0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #4 (mapping.invalidate_lock#2){.+.+}-{4:4}:
down_read+0x9a/0x330 kernel/locking/rwsem.c:1524
filemap_invalidate_lock_shared include/linux/fs.h:932 [inline]
filemap_fault+0x1845/0x2ca0 mm/filemap.c:3454
__do_fault+0x10a/0x490 mm/memory.c:4988
do_read_fault mm/memory.c:5403 [inline]
do_fault mm/memory.c:5537 [inline]
do_pte_missing+0xecf/0x3e10 mm/memory.c:4058
handle_pte_fault mm/memory.c:5900 [inline]
__handle_mm_fault+0x1166/0x2c60 mm/memory.c:6043
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6212
do_user_addr_fault+0x7a3/0x13f0 arch/x86/mm/fault.c:1388
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
rep_movs_alternative+0x30/0x70 arch/x86/lib/copy_user_64.S:50
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
_inline_copy_from_user include/linux/uaccess.h:178 [inline]
_copy_from_user+0x98/0xd0 lib/usercopy.c:18
copy_from_user include/linux/uaccess.h:212 [inline]
copy_from_sockptr_offset include/linux/sockptr.h:48 [inline]
tcp_repair_options_est net/ipv4/tcp.c:3466 [inline]
do_tcp_setsockopt+0x2282/0x24a0 net/ipv4/tcp.c:3903
tcp_setsockopt+0xe2/0x100 net/ipv4/tcp.c:4045
do_sock_setsockopt+0x222/0x480 net/socket.c:2303
__sys_setsockopt+0x1a0/0x230 net/socket.c:2328
__do_sys_setsockopt net/socket.c:2334 [inline]
__se_sys_setsockopt net/socket.c:2331 [inline]
__x64_sys_setsockopt+0xbd/0x160 net/socket.c:2331
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #3 (sk_lock-AF_INET){+.+.}-{0:0}:
lock_sock_nested+0x3a/0xf0 net/core/sock.c:3662
lock_sock include/net/sock.h:1624 [inline]
inet_autobind+0x1a/0x1a0 net/ipv4/af_inet.c:178
inet_send_prepare+0x317/0x530 net/ipv4/af_inet.c:837
inet_sendmsg+0x43/0x140 net/ipv4/af_inet.c:848
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:733 [inline]
sock_sendmsg+0x389/0x490 net/socket.c:756
__sock_xmit+0x1e8/0x4f0 drivers/block/nbd.c:574
sock_xmit drivers/block/nbd.c:602 [inline]
nbd_send_cmd+0x8ec/0x1c90 drivers/block/nbd.c:712
nbd_handle_cmd drivers/block/nbd.c:1174 [inline]
nbd_queue_rq+0x941/0x1220 drivers/block/nbd.c:1204
blk_mq_dispatch_rq_list+0x443/0x1dc0 block/blk-mq.c:2120
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xcdf/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd8/0x1b0 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x239/0x670 block/blk-mq.c:2354
blk_mq_dispatch_plug_list block/blk-mq.c:2866 [inline]
blk_mq_flush_plug_list+0x673/0x1c60 block/blk-mq.c:2917
__blk_flush_plug+0x2c5/0x4b0 block/blk-core.c:1213
blk_finish_plug block/blk-core.c:1240 [inline]
blk_finish_plug block/blk-core.c:1237 [inline]
__submit_bio+0x547/0x690 block/blk-core.c:642
__submit_bio_noacct_mq block/blk-core.c:715 [inline]
submit_bio_noacct_nocheck+0x698/0xd70 block/blk-core.c:744
submit_bio_noacct+0x50d/0x1ec0 block/blk-core.c:867
submit_bh fs/buffer.c:2819 [inline]
block_read_full_folio+0x812/0xa50 fs/buffer.c:2446
filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2390
do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3960
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xd4/0x310 block/partitions/core.c:722
adfspart_check_ICS+0x94/0x940 block/partitions/acorn.c:360
check_partition block/partitions/core.c:141 [inline]
blk_add_partitions block/partitions/core.c:589 [inline]
bdev_disk_changed+0x71f/0x1520 block/partitions/core.c:693
blkdev_get_whole+0x187/0x290 block/bdev.c:706
bdev_open+0x2c7/0xe20 block/bdev.c:915
bdev_file_open_by_dev block/bdev.c:1017 [inline]
bdev_file_open_by_dev+0x17d/0x210 block/bdev.c:992
setup_bdev_super+0x78/0x730 fs/super.c:1554
get_tree_bdev_flags+0x365/0x620 fs/super.c:1634
vfs_get_tree+0x8b/0x340 fs/super.c:1814
do_new_mount fs/namespace.c:3560 [inline]
path_mount+0x14e6/0x1f10 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount fs/namespace.c:4088 [inline]
__x64_sys_mount+0x28f/0x310 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #2 (&nsock->tx_lock){+.+.}-{4:4}:
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19b/0xb10 kernel/locking/mutex.c:730
nbd_handle_cmd drivers/block/nbd.c:1140 [inline]
nbd_queue_rq+0x424/0x1220 drivers/block/nbd.c:1204
blk_mq_dispatch_rq_list+0x443/0x1dc0 block/blk-mq.c:2120
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xcdf/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd8/0x1b0 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x239/0x670 block/blk-mq.c:2354
blk_mq_dispatch_plug_list block/blk-mq.c:2866 [inline]
blk_mq_flush_plug_list+0x673/0x1c60 block/blk-mq.c:2917
__blk_flush_plug+0x2c5/0x4b0 block/blk-core.c:1213
blk_finish_plug block/blk-core.c:1240 [inline]
blk_finish_plug block/blk-core.c:1237 [inline]
__submit_bio+0x547/0x690 block/blk-core.c:642
__submit_bio_noacct_mq block/blk-core.c:715 [inline]
submit_bio_noacct_nocheck+0x698/0xd70 block/blk-core.c:744
submit_bio_noacct+0x50d/0x1ec0 block/blk-core.c:867
submit_bh fs/buffer.c:2819 [inline]
block_read_full_folio+0x812/0xa50 fs/buffer.c:2446
filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2390
do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3960
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xd4/0x310 block/partitions/core.c:722
adfspart_check_ICS+0x94/0x940 block/partitions/acorn.c:360
check_partition block/partitions/core.c:141 [inline]
blk_add_partitions block/partitions/core.c:589 [inline]
bdev_disk_changed+0x71f/0x1520 block/partitions/core.c:693
blkdev_get_whole+0x187/0x290 block/bdev.c:706
bdev_open+0x2c7/0xe20 block/bdev.c:915
bdev_file_open_by_dev block/bdev.c:1017 [inline]
bdev_file_open_by_dev+0x17d/0x210 block/bdev.c:992
setup_bdev_super+0x78/0x730 fs/super.c:1554
get_tree_bdev_flags+0x365/0x620 fs/super.c:1634
vfs_get_tree+0x8b/0x340 fs/super.c:1814
do_new_mount fs/namespace.c:3560 [inline]
path_mount+0x14e6/0x1f10 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount fs/namespace.c:4088 [inline]
__x64_sys_mount+0x28f/0x310 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (&cmd->lock){+.+.}-{4:4}:
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19b/0xb10 kernel/locking/mutex.c:730
nbd_queue_rq+0xbe/0x1220 drivers/block/nbd.c:1196
blk_mq_dispatch_rq_list+0x443/0x1dc0 block/blk-mq.c:2120
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xcdf/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd8/0x1b0 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x239/0x670 block/blk-mq.c:2354
blk_mq_dispatch_plug_list block/blk-mq.c:2866 [inline]
blk_mq_flush_plug_list+0x673/0x1c60 block/blk-mq.c:2917
__blk_flush_plug+0x2c5/0x4b0 block/blk-core.c:1213
blk_finish_plug block/blk-core.c:1240 [inline]
blk_finish_plug block/blk-core.c:1237 [inline]
__submit_bio+0x547/0x690 block/blk-core.c:642
__submit_bio_noacct_mq block/blk-core.c:715 [inline]
submit_bio_noacct_nocheck+0x698/0xd70 block/blk-core.c:744
submit_bio_noacct+0x50d/0x1ec0 block/blk-core.c:867
submit_bh fs/buffer.c:2819 [inline]
block_read_full_folio+0x812/0xa50 fs/buffer.c:2446
filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2390
do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3960
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xd4/0x310 block/partitions/core.c:722
adfspart_check_ICS+0x94/0x940 block/partitions/acorn.c:360
check_partition block/partitions/core.c:141 [inline]
blk_add_partitions block/partitions/core.c:589 [inline]
bdev_disk_changed+0x71f/0x1520 block/partitions/core.c:693
blkdev_get_whole+0x187/0x290 block/bdev.c:706
bdev_open+0x2c7/0xe20 block/bdev.c:915
bdev_file_open_by_dev block/bdev.c:1017 [inline]
bdev_file_open_by_dev+0x17d/0x210 block/bdev.c:992
setup_bdev_super+0x78/0x730 fs/super.c:1554
get_tree_bdev_flags+0x365/0x620 fs/super.c:1634
vfs_get_tree+0x8b/0x340 fs/super.c:1814
do_new_mount fs/namespace.c:3560 [inline]
path_mount+0x14e6/0x1f10 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount fs/namespace.c:4088 [inline]
__x64_sys_mount+0x28f/0x310 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (set->srcu){.+.+}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain kernel/locking/lockdep.c:3906 [inline]
__lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5228
lock_sync+0xf5/0x190 kernel/locking/lockdep.c:5899
srcu_lock_sync include/linux/srcu.h:176 [inline]
__synchronize_srcu+0xa9/0x2a0 kernel/rcu/srcutree.c:1418
blk_mq_wait_quiesce_done block/blk-mq.c:293 [inline]
blk_mq_wait_quiesce_done block/blk-mq.c:290 [inline]
blk_mq_quiesce_queue block/blk-mq.c:313 [inline]
blk_mq_quiesce_queue+0x149/0x1b0 block/blk-mq.c:308
elevator_disable+0xe9/0x570 block/elevator.c:661
blk_mq_elv_switch_none block/blk-mq.c:4951 [inline]
__blk_mq_update_nr_hw_queues block/blk-mq.c:5018 [inline]
blk_mq_update_nr_hw_queues+0x41c/0x1360 block/blk-mq.c:5070
nbd_start_device+0x172/0xcd0 drivers/block/nbd.c:1476
nbd_start_device_ioctl drivers/block/nbd.c:1527 [inline]
__nbd_ioctl drivers/block/nbd.c:1602 [inline]
nbd_ioctl+0x21a/0xd60 drivers/block/nbd.c:1642
blkdev_ioctl+0x276/0x6d0 block/ioctl.c:693
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl fs/ioctl.c:892 [inline]
__x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
set->srcu --> &q->q_usage_counter(io)#50 --> &q->sysfs_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&q->sysfs_lock);
lock(&q->q_usage_counter(io)#50);
lock(&q->sysfs_lock);
sync(set->srcu);
*** DEADLOCK ***
5 locks held by syz.1.1478/12030:
#0: ffff888025a5a198 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_ioctl+0x151/0xd60 drivers/block/nbd.c:1635
#1: ffff888025a5a0d8 (&set->tag_list_lock){+.+.}-{4:4}, at: blk_mq_update_nr_hw_queues+0x8f/0x1360 block/blk-mq.c:5069
#2: ffff8881447700a8 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave block/blk-mq.c:215 [inline]
#2: ffff8881447700a8 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: __blk_mq_update_nr_hw_queues block/blk-mq.c:5010 [inline]
#2: ffff8881447700a8 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: blk_mq_update_nr_hw_queues+0x264/0x1360 block/blk-mq.c:5070
#3: ffff8881447700e0 (&q->q_usage_counter(queue)#34){+.+.}-{0:0}, at: blk_mq_freeze_queue_nomemsave block/blk-mq.c:215 [inline]
#3: ffff8881447700e0 (&q->q_usage_counter(queue)#34){+.+.}-{0:0}, at: __blk_mq_update_nr_hw_queues block/blk-mq.c:5010 [inline]
#3: ffff8881447700e0 (&q->q_usage_counter(queue)#34){+.+.}-{0:0}, at: blk_mq_update_nr_hw_queues+0x264/0x1360 block/blk-mq.c:5070
#4: ffff8881447705d8 (&q->sysfs_lock){+.+.}-{4:4}, at: blk_mq_elv_switch_none block/blk-mq.c:4937 [inline]
#4: ffff8881447705d8 (&q->sysfs_lock){+.+.}-{4:4}, at: __blk_mq_update_nr_hw_queues block/blk-mq.c:5018 [inline]
#4: ffff8881447705d8 (&q->sysfs_lock){+.+.}-{4:4}, at: blk_mq_update_nr_hw_queues+0x4a7/0x1360 block/blk-mq.c:5070
stack backtrace:
CPU: 0 UID: 0 PID: 12030 Comm: syz.1.1478 Not tainted 6.14.0-rc4-syzkaller-00199-g76544811c850 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_circular_bug+0x490/0x760 kernel/locking/lockdep.c:2076
check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2208
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain kernel/locking/lockdep.c:3906 [inline]
__lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5228
lock_sync+0xf5/0x190 kernel/locking/lockdep.c:5899
srcu_lock_sync include/linux/srcu.h:176 [inline]
__synchronize_srcu+0xa9/0x2a0 kernel/rcu/srcutree.c:1418
blk_mq_wait_quiesce_done block/blk-mq.c:293 [inline]
blk_mq_wait_quiesce_done block/blk-mq.c:290 [inline]
blk_mq_quiesce_queue block/blk-mq.c:313 [inline]
blk_mq_quiesce_queue+0x149/0x1b0 block/blk-mq.c:308
elevator_disable+0xe9/0x570 block/elevator.c:661
blk_mq_elv_switch_none block/blk-mq.c:4951 [inline]
__blk_mq_update_nr_hw_queues block/blk-mq.c:5018 [inline]
blk_mq_update_nr_hw_queues+0x41c/0x1360 block/blk-mq.c:5070
nbd_start_device+0x172/0xcd0 drivers/block/nbd.c:1476
nbd_start_device_ioctl drivers/block/nbd.c:1527 [inline]
__nbd_ioctl drivers/block/nbd.c:1602 [inline]
nbd_ioctl+0x21a/0xd60 drivers/block/nbd.c:1642
blkdev_ioctl+0x276/0x6d0 block/ioctl.c:693
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl fs/ioctl.c:892 [inline]
__x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc218f8d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc219d4f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc2191a6080 RCX: 00007fc218f8d169
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000004
RBP: 00007fc21900e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc2191a6080 R15: 00007ffda0f7b0a8
</TASK>
block nbd1: shutting down sockets