INFO: task udevd:5831 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-05901-gf278b6d5bb46 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:21496 pid:5831 tgid:5831 ppid:1 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
__schedule_loop kernel/sched/core.c:6824 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6839
schedule_timeout+0x15b/0x290 kernel/time/sleep_timeout.c:99
wait_for_reconnect drivers/block/nbd.c:1104 [inline]
nbd_handle_cmd drivers/block/nbd.c:1146 [inline]
nbd_queue_rq+0x773/0xf70 drivers/block/nbd.c:1204
blk_mq_dispatch_rq_list+0xad8/0x19d0 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+0xb8c/0x1840 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd6/0x190 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x354/0x500 block/blk-mq.c:2354
blk_mq_dispatch_plug_list include/linux/spinlock.h:-1 [inline]
blk_mq_flush_plug_list+0x1190/0x1880 block/blk-mq.c:2917
__blk_flush_plug+0x422/0x500 block/blk-core.c:1220
blk_finish_plug block/blk-core.c:1247 [inline]
__submit_bio+0x56d/0x6d0 block/blk-core.c:649
__submit_bio_noacct_mq block/blk-core.c:722 [inline]
submit_bio_noacct_nocheck+0x4d5/0xe30 block/blk-core.c:751
submit_bh fs/buffer.c:2807 [inline]
block_read_full_folio+0x7c1/0x850 fs/buffer.c:2432
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2412
do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3896
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xb3/0x260 block/partitions/core.c:722
adfspart_check_ICS+0xcd/0xa20 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+0x783/0x14e0 block/partitions/core.c:693
blkdev_get_whole+0x36c/0x4f0 block/bdev.c:710
bdev_open+0x312/0xcd0 block/bdev.c:919
blkdev_open+0x38e/0x4e0 block/fops.c:652
do_dentry_open+0xdec/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x2caf/0x35d0 fs/namei.c:4004
do_filp_open+0x284/0x4e0 fs/namei.c:4031
do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x249/0x2a0 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0ea1169a4
RSP: 002b:00007ffef8bc6730 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557337deed00 RCX: 00007fc0ea1169a4
RDX: 00000000000a0800 RSI: 0000557337df5470 RDI: 00000000ffffff9c
RBP: 0000557337df5470 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000557337de68a0 R14: 0000000000000001 R15: 0000557337ddd910
INFO: task udevd:5832 blocked for more than 145 seconds.
Not tainted 6.14.0-syzkaller-05901-gf278b6d5bb46 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:22864 pid:5832 tgid:5832 ppid:1 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
__schedule_loop kernel/sched/core.c:6824 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6839
schedule_timeout+0x15b/0x290 kernel/time/sleep_timeout.c:99
wait_for_reconnect drivers/block/nbd.c:1104 [inline]
nbd_handle_cmd drivers/block/nbd.c:1146 [inline]
nbd_queue_rq+0x773/0xf70 drivers/block/nbd.c:1204
blk_mq_dispatch_rq_list+0xad8/0x19d0 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+0xb8c/0x1840 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd6/0x190 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x354/0x500 block/blk-mq.c:2354
blk_mq_dispatch_plug_list include/linux/spinlock.h:-1 [inline]
blk_mq_flush_plug_list+0x1190/0x1880 block/blk-mq.c:2917
__blk_flush_plug+0x422/0x500 block/blk-core.c:1220
blk_finish_plug block/blk-core.c:1247 [inline]
__submit_bio+0x56d/0x6d0 block/blk-core.c:649
__submit_bio_noacct_mq block/blk-core.c:722 [inline]
submit_bio_noacct_nocheck+0x4d5/0xe30 block/blk-core.c:751
submit_bh fs/buffer.c:2807 [inline]
block_read_full_folio+0x7c1/0x850 fs/buffer.c:2432
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2412
do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3896
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xb3/0x260 block/partitions/core.c:722
adfspart_check_ICS+0xcd/0xa20 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+0x783/0x14e0 block/partitions/core.c:693
blkdev_get_whole+0x36c/0x4f0 block/bdev.c:710
bdev_open+0x312/0xcd0 block/bdev.c:919
blkdev_open+0x38e/0x4e0 block/fops.c:652
do_dentry_open+0xdec/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x2caf/0x35d0 fs/namei.c:4004
do_filp_open+0x284/0x4e0 fs/namei.c:4031
do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x249/0x2a0 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0ea1169a4
RSP: 002b:00007ffef8bc6730 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557337dfde80 RCX: 00007fc0ea1169a4
RDX: 00000000000a0800 RSI: 0000557337dee0a0 RDI: 00000000ffffff9c
RBP: 0000557337dee0a0 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000557337dfe320 R14: 0000000000000001 R15: 0000557337ddd910
INFO: task udevd:5925 blocked for more than 146 seconds.
Not tainted 6.14.0-syzkaller-05901-gf278b6d5bb46 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:21856 pid:5925 tgid:5925 ppid:1 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
__schedule_loop kernel/sched/core.c:6824 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6839
schedule_timeout+0x15b/0x290 kernel/time/sleep_timeout.c:99
wait_for_reconnect drivers/block/nbd.c:1104 [inline]
nbd_handle_cmd drivers/block/nbd.c:1146 [inline]
nbd_queue_rq+0x773/0xf70 drivers/block/nbd.c:1204
blk_mq_dispatch_rq_list+0xad8/0x19d0 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+0xb8c/0x1840 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd6/0x190 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x354/0x500 block/blk-mq.c:2354
blk_mq_dispatch_plug_list include/linux/spinlock.h:-1 [inline]
blk_mq_flush_plug_list+0x1190/0x1880 block/blk-mq.c:2917
__blk_flush_plug+0x422/0x500 block/blk-core.c:1220
blk_finish_plug block/blk-core.c:1247 [inline]
__submit_bio+0x56d/0x6d0 block/blk-core.c:649
__submit_bio_noacct_mq block/blk-core.c:722 [inline]
submit_bio_noacct_nocheck+0x4d5/0xe30 block/blk-core.c:751
submit_bh fs/buffer.c:2807 [inline]
block_read_full_folio+0x7c1/0x850 fs/buffer.c:2432
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2412
do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3896
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xb3/0x260 block/partitions/core.c:722
adfspart_check_ICS+0xcd/0xa20 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+0x783/0x14e0 block/partitions/core.c:693
blkdev_get_whole+0x36c/0x4f0 block/bdev.c:710
bdev_open+0x312/0xcd0 block/bdev.c:919
blkdev_open+0x38e/0x4e0 block/fops.c:652
do_dentry_open+0xdec/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x2caf/0x35d0 fs/namei.c:4004
do_filp_open+0x284/0x4e0 fs/namei.c:4031
do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x249/0x2a0 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0ea1169a4
RSP: 002b:00007ffef8bc6730 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557337e88770 RCX: 00007fc0ea1169a4
RDX: 00000000000a0800 RSI: 0000557337dddce0 RDI: 00000000ffffff9c
RBP: 0000557337dddce0 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000557337de68a0 R14: 0000000000000001 R15: 0000557337ddd910
INFO: task udevd:6448 blocked for more than 147 seconds.
Not tainted 6.14.0-syzkaller-05901-gf278b6d5bb46 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:22864 pid:6448 tgid:6448 ppid:1 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
__schedule_loop kernel/sched/core.c:6824 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6839
schedule_timeout+0x15b/0x290 kernel/time/sleep_timeout.c:99
wait_for_reconnect drivers/block/nbd.c:1104 [inline]
nbd_handle_cmd drivers/block/nbd.c:1146 [inline]
nbd_queue_rq+0x773/0xf70 drivers/block/nbd.c:1204
blk_mq_dispatch_rq_list+0xad8/0x19d0 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+0xb8c/0x1840 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd6/0x190 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x354/0x500 block/blk-mq.c:2354
blk_mq_dispatch_plug_list include/linux/spinlock.h:-1 [inline]
blk_mq_flush_plug_list+0x1190/0x1880 block/blk-mq.c:2917
__blk_flush_plug+0x422/0x500 block/blk-core.c:1220
blk_finish_plug block/blk-core.c:1247 [inline]
__submit_bio+0x56d/0x6d0 block/blk-core.c:649
__submit_bio_noacct_mq block/blk-core.c:722 [inline]
submit_bio_noacct_nocheck+0x4d5/0xe30 block/blk-core.c:751
submit_bh fs/buffer.c:2807 [inline]
block_read_full_folio+0x7c1/0x850 fs/buffer.c:2432
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2412
do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3896
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xb3/0x260 block/partitions/core.c:722
adfspart_check_ICS+0xcd/0xa20 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+0x783/0x14e0 block/partitions/core.c:693
blkdev_get_whole+0x36c/0x4f0 block/bdev.c:710
bdev_open+0x312/0xcd0 block/bdev.c:919
blkdev_open+0x38e/0x4e0 block/fops.c:652
do_dentry_open+0xdec/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x2caf/0x35d0 fs/namei.c:4004
do_filp_open+0x284/0x4e0 fs/namei.c:4031
do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x249/0x2a0 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0ea1169a4
RSP: 002b:00007ffef8bc6730 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557337de7860 RCX: 00007fc0ea1169a4
RDX: 00000000000a0800 RSI: 0000557337deae00 RDI: 00000000ffffff9c
RBP: 0000557337deae00 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000557337de68a0 R14: 0000000000000001 R15: 0000557337ddd910
INFO: task udevd:6606 blocked for more than 149 seconds.
Not tainted 6.14.0-syzkaller-05901-gf278b6d5bb46 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:22864 pid:6606 tgid:6606 ppid:1 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
__schedule_loop kernel/sched/core.c:6824 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6839
schedule_timeout+0x15b/0x290 kernel/time/sleep_timeout.c:99
wait_for_reconnect drivers/block/nbd.c:1104 [inline]
nbd_handle_cmd drivers/block/nbd.c:1146 [inline]
nbd_queue_rq+0x773/0xf70 drivers/block/nbd.c:1204
blk_mq_dispatch_rq_list+0xad8/0x19d0 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+0xb8c/0x1840 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd6/0x190 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x354/0x500 block/blk-mq.c:2354
blk_mq_dispatch_plug_list include/linux/spinlock.h:-1 [inline]
blk_mq_flush_plug_list+0x1190/0x1880 block/blk-mq.c:2917
__blk_flush_plug+0x422/0x500 block/blk-core.c:1220
blk_finish_plug block/blk-core.c:1247 [inline]
__submit_bio+0x56d/0x6d0 block/blk-core.c:649
__submit_bio_noacct_mq block/blk-core.c:722 [inline]
submit_bio_noacct_nocheck+0x4d5/0xe30 block/blk-core.c:751
submit_bh fs/buffer.c:2807 [inline]
block_read_full_folio+0x7c1/0x850 fs/buffer.c:2432
filemap_read_folio+0x14a/0x3b0 mm/filemap.c:2412
do_read_cache_folio+0x373/0x5b0 mm/filemap.c:3896
read_mapping_folio include/linux/pagemap.h:1023 [inline]
read_part_sector+0xb3/0x260 block/partitions/core.c:722
adfspart_check_ICS+0xcd/0xa20 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+0x783/0x14e0 block/partitions/core.c:693
blkdev_get_whole+0x36c/0x4f0 block/bdev.c:710
bdev_open+0x312/0xcd0 block/bdev.c:919
blkdev_open+0x38e/0x4e0 block/fops.c:652
do_dentry_open+0xdec/0x1960 fs/open.c:956
vfs_open+0x3b/0x370 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x2caf/0x35d0 fs/namei.c:4004
do_filp_open+0x284/0x4e0 fs/namei.c:4031
do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x249/0x2a0 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0ea1169a4
RSP: 002b:00007ffef8bc6730 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557337de7860 RCX: 00007fc0ea1169a4
RDX: 00000000000a0800 RSI: 0000557337dde5f0 RDI: 00000000ffffff9c
RBP: 0000557337dde5f0 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000557337df4890 R14: 0000000000000001 R15: 0000557337ddd910
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8ed3a260 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8ed3a260 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8ed3a260 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x30/0x180 kernel/locking/lockdep.c:6761
3 locks held by kworker/u8:3/53:
#0: ffff88801b089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801b089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x990/0x18e0 kernel/workqueue.c:3319
#1: ffffc90000be7c60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000be7c60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9cb/0x18e0 kernel/workqueue.c:3319
#2: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:285
4 locks held by kworker/u8:4/70:
#0: ffff88801bef6148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88801bef6148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x990/0x18e0 kernel/workqueue.c:3319
#1: ffffc90001587c60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90001587c60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9cb/0x18e0 kernel/workqueue.c:3319
#2: ffffffff900d8d90 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17c/0xd60 net/core/net_namespace.c:608
#3: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: netdev_wait_allrefs_any net/core/dev.c:11178 [inline]
#3: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: netdev_run_todo+0x75c/0xf30 net/core/dev.c:11298
3 locks held by kworker/u8:6/1098:
#0: ffff88814d482948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88814d482948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x990/0x18e0 kernel/workqueue.c:3319
#1: ffffc90003ebfc60 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003ebfc60 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9cb/0x18e0 kernel/workqueue.c:3319
#2: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#2: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x110/0x16a0 net/ipv6/addrconf.c:4190
3 locks held by dhcpcd/5499:
#0: ffff8880b8739b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:595
#1: ffff8880b8723b08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41f/0x7a0 kernel/sched/psi.c:987
#2: ffff8880309da828 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
#2: ffff8880309da828 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xc6/0x15d0 kernel/sched/core.c:4202
2 locks held by getty/5590:
#0: ffff888031ced0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x53d/0x16b0 drivers/tty/n_tty.c:2211
3 locks held by udevd/5831:
#0: ffff888143f43358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf7/0xcd0 block/bdev.c:907
#1: ffff888025a83d90 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888025a83d90 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888025a83d90 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x32b/0x500 block/blk-mq.c:2354
#2: ffff888025e47178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc9/0xf70 drivers/block/nbd.c:1196
3 locks held by udevd/5832:
#0: ffff888025df3358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf7/0xcd0 block/bdev.c:907
#1: ffff8880233e9c10 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff8880233e9c10 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff8880233e9c10 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x32b/0x500 block/blk-mq.c:2354
#2: ffff888025eee178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc9/0xf70 drivers/block/nbd.c:1196
5 locks held by kworker/0:4/5881:
3 locks held by kworker/0:5/5882:
3 locks held by kworker/u8:7/5893:
3 locks held by udevd/5925:
#0: ffff888025ea3358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf7/0xcd0 block/bdev.c:907
#1: ffff888141b4b490 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888141b4b490 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888141b4b490 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x32b/0x500 block/blk-mq.c:2354
#2: ffff888025f17178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc9/0xf70 drivers/block/nbd.c:1196
3 locks held by udevd/6448:
#0: ffff888025ea7358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf7/0xcd0 block/bdev.c:907
#1: ffff888141b4b990 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888141b4b990 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888141b4b990 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x32b/0x500 block/blk-mq.c:2354
#2: ffff888025f4e178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc9/0xf70 drivers/block/nbd.c:1196
3 locks held by udevd/6606:
#0: ffff888025df7358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf7/0xcd0 block/bdev.c:907
#1: ffff888025473790 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888025473790 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888025473790 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x32b/0x500 block/blk-mq.c:2354
#2: ffff888025fe51f8 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc9/0xf70 drivers/block/nbd.c:1196
3 locks held by udevd/7110:
#0: ffff888026543358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf7/0xcd0 block/bdev.c:907
#1: ffff888143f89b90 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#1: ffff888143f89b90 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#1: ffff888143f89b90 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x32b/0x500 block/blk-mq.c:2354
#2: ffff8880265fe178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc9/0xf70 drivers/block/nbd.c:1196
3 locks held by kworker/0:7/11160:
3 locks held by kworker/0:9/11162:
3 locks held by kworker/0:14/11167:
1 lock held by syz-executor/11412:
#0: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#0: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xd68/0x1fe0 net/core/rtnetlink.c:4064
8 locks held by syz-executor/11518:
#0: ffff888035374420 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3033 [inline]
#0: ffff888035374420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x23f/0xd10 fs/read_write.c:680
#1: ffff8880430fd488 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1e2/0x510 fs/kernfs/file.c:325
#2: ffff8880282cf968 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x206/0x510 fs/kernfs/file.c:326
#3: ffffffff8f97f628 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xfe/0x490 drivers/net/netdevsim/bus.c:216
#4: ffff888051c1c0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:922 [inline]
#4: ffff888051c1c0e8 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888051c1c0e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1293
#5: ffff888051c1d250 (&devlink->lock_key#27){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1675
#6: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0xa0/0x620 drivers/net/netdevsim/netdev.c:1046
#7: ffffffff8ed3f778 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:304 [inline]
#7: ffffffff8ed3f778 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x384/0x830 kernel/rcu/tree_exp.h:998
2 locks held by syz-executor/11607:
#0: ffffffff8f8796e0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8f8796e0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8f8796e0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:570
#1: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#1: ffffffff900e59c8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xd68/0x1fe0 net/core/rtnetlink.c:4064
2 locks held by dhcpcd/11632:
#0: ffff888143bb4258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1615 [inline]
#0: ffff888143bb4258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcb0 net/packet/af_packet.c:3252
#1: ffffffff8ed3f778 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#1: ffffffff8ed3f778 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x454/0x830 kernel/rcu/tree_exp.h:998
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-syzkaller-05901-gf278b6d5bb46 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x4ab/0x4e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11167 Comm: kworker/0:14 Not tainted 6.14.0-syzkaller-05901-gf278b6d5bb46 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
RIP: 0010:arch_stack_walk+0x104/0x150 arch/x86/kernel/stacktrace.c:27
Code: ff ff 4c 89 e6 4c 89 fa e8 19 f0 09 00 83 bd 70 ff ff ff 00 74 37 48 8d 9d 70 ff ff ff 48 89 df e8 71 c6 09 00 48 85 c0 74 23 <4c> 89 f7 48 89 c6 4d 89 eb 41 ff d3 66 90 84 c0 74 11 48 89 df e8
RSP: 0018:ffffc900000076c0 EFLAGS: 00000286
RAX: ffffffff818465c6 RBX: ffffc900000076c0 RCX: ffffffff91bcd000
RDX: ffffffff91d84901 RSI: ffffc90000000000 RDI: ffffffff818465c6
RBP: ffffc90000007750 R08: ffffc90000007eb0 R09: 0000000000000000
R10: ffffc90000007710 R11: fffff52000000ee4 R12: ffff888028819e00
R13: ffffffff81aeead0 R14: ffffc900000077a0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888124fea000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000b63fe4 CR3: 000000000eb38000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2376 [inline]
slab_free mm/slub.c:4633 [inline]
kfree+0x198/0x430 mm/slub.c:4832
ref_tracker_free+0x4d3/0x7e0 lib/ref_tracker.c:272
netdev_tracker_free include/linux/netdevice.h:4351 [inline]
netdev_put include/linux/netdevice.h:4368 [inline]
dst_destroy+0x105/0x360 net/core/dst.c:114
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
do_softirq+0x11f/0x1e0 kernel/softirq.c:462
__local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:389
wg_socket_send_skb_to_peer+0x176/0x1d0 drivers/net/wireguard/socket.c:184
wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
wg_packet_tx_worker+0x1bf/0x810 drivers/net/wireguard/send.c:276
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245