INFO: task syz-executor900:3650 blocked for more than 143 seconds.
Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor900 state:D stack:28544 pid:3650 ppid:3640 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5197 [inline]
__schedule+0xae5/0x52c0 kernel/sched/core.c:6509
schedule+0xda/0x1b0 kernel/sched/core.c:6585
blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:180
nbd_add_socket+0x166/0x810 drivers/block/nbd.c:1123
__nbd_ioctl drivers/block/nbd.c:1464 [inline]
nbd_ioctl+0x4ab/0xbd0 drivers/block/nbd.c:1521
blkdev_ioctl+0x36e/0x800 block/ioctl.c:614
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff59220e399
RSP: 002b:00007ffe9c7dc718 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000076e96 RCX: 00007ff59220e399
RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffe9c7dc8b8 R09: 00007ffe9c7dc8b8
R10: 00007ffe9c7dc8b8 R11: 0000000000000246 R12: 00007ffe9c7dc72c
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
INFO: task udevd:3651 blocked for more than 143 seconds.
Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:27672 pid:3651 ppid:2970 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5197 [inline]
__schedule+0xae5/0x52c0 kernel/sched/core.c:6509
schedule+0xda/0x1b0 kernel/sched/core.c:6585
io_schedule+0xba/0x130 kernel/sched/core.c:8729
folio_wait_bit_common+0x49f/0xa20 mm/filemap.c:1295
folio_put_wait_locked mm/filemap.c:1464 [inline]
do_read_cache_folio+0x2c0/0x510 mm/filemap.c:3508
read_mapping_folio include/linux/pagemap.h:762 [inline]
read_part_sector+0xf6/0x440 block/partitions/core.c:714
adfspart_check_ICS+0x9a/0x890 block/partitions/acorn.c:360
check_partition block/partitions/core.c:146 [inline]
blk_add_partitions block/partitions/core.c:599 [inline]
bdev_disk_changed block/partitions/core.c:685 [inline]
bdev_disk_changed+0x629/0xf60 block/partitions/core.c:652
blkdev_get_whole+0x18a/0x2d0 block/bdev.c:684
blkdev_get_by_dev.part.0+0x5ec/0xb90 block/bdev.c:821
blkdev_get_by_dev+0x6b/0x80 block/bdev.c:855
blkdev_open+0x13c/0x2c0 block/fops.c:485
do_dentry_open+0x6cc/0x13f0 fs/open.c:880
do_open fs/namei.c:3557 [inline]
path_openat+0x1c92/0x28f0 fs/namei.c:3691
do_filp_open+0x1b6/0x400 fs/namei.c:3718
do_sys_openat2+0x16d/0x4c0 fs/open.c:1308
do_sys_open fs/open.c:1324 [inline]
__do_sys_openat fs/open.c:1340 [inline]
__se_sys_openat fs/open.c:1335 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1335
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe313f25697
RSP: 002b:00007ffd4c3faa80 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000056002a2fda20 RCX: 00007fe313f25697
RDX: 00000000000a0800 RSI: 000056002a30dff0 RDI: 00000000ffffff9c
RBP: 000056002a30dff0 R08: 0000000000000001 R09: 00007ffd4c5f6080
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000056002a303790 R14: 00007ffd4c3fab2c R15: 000056002a2e9910
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:227 [inline]
watchdog+0xcf7/0xfd0 kernel/hung_task.c:384
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 41 Comm: kworker/u4:2 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0xde/0x180 mm/kasan/generic.c:189
Code: 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 80 38 00 <74> f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c 2c eb 0c
RSP: 0018:ffffc90000b278e0 EFLAGS: 00000246
RAX: fffffbfff1bbdd8a RBX: fffffbfff1bbdd8b RCX: ffffffff815fa421
RDX: fffffbfff1bbdd8b RSI: 0000000000000008 RDI: ffffffff8ddeec50
RBP: fffffbfff1bbdd8a R08: 0000000000000000 R09: ffffffff8ddeec57
R10: fffffbfff1bbdd8a R11: 0000000000000001 R12: ffff8880119be138
R13: 0000000000000004 R14: 0000000000000725 R15: ffffffff8c0d0120
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555f2ba66600 CR3: 000000000bc8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:390 [inline]
cpu_online include/linux/cpumask.h:965 [inline]
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xa1/0x780 kernel/locking/lockdep.c:5677
__raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:389 [inline]
__text_poke+0x47a/0x8e0 arch/x86/kernel/alternative.c:1184
text_poke arch/x86/kernel/alternative.c:1208 [inline]
text_poke_bp_batch+0x382/0x6c0 arch/x86/kernel/alternative.c:1503
text_poke_flush arch/x86/kernel/alternative.c:1660 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1657 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1667
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:801
static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
toggle_allocation_gate mm/kfence/core.c:825 [inline]
toggle_allocation_gate+0x183/0x390 mm/kfence/core.c:803
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.199 msecs