INFO: task syz-executor.4:28291 blocked for more than 143 seconds.
Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25408 pid:28291 ppid:3619 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0xadf/0x5270 kernel/sched/core.c:6490
schedule+0xda/0x1b0 kernel/sched/core.c:6566
wb_wait_for_completion+0x17e/0x240 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2620
try_to_writeback_inodes_sb+0x94/0xc0 fs/fs-writeback.c:2668
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2950
ext4_da_write_begin+0x16d/0xae0 fs/ext4/inode.c:2977
generic_perform_write+0x246/0x560 mm/filemap.c:3745
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8b8/0x16e0 fs/ext4/file.c:700
__kernel_write_iter+0x25e/0x730 fs/read_write.c:517
dump_emit_page fs/coredump.c:857 [inline]
dump_user_range+0x230/0x700 fs/coredump.c:908
elf_core_dump+0x26de/0x3510 fs/binfmt_elf.c:2311
do_coredump+0x2732/0x3c40 fs/coredump.c:755
get_signal+0x1be1/0x2430 kernel/signal.c:2844
arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:307
exc_page_fault+0xbc/0x170 arch/x86/mm/fault.c:1557
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0xd5310
RSP: 002b:00000000200001c8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f4d337ac050 RCX: 00007f4d3368b5a9
RDX: 0000000020000200 RSI: 00000000200001c0 RDI: 000000000c000000
RBP: 00007f4d336e6580 R08: 0000000020000280 R09: 0000000020000280
R10: 0000000020000240 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffc687a65ef R14: 00007f4d34758300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
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:220 [inline]
watchdog+0xbf9/0xf30 kernel/hung_task.c:377
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: 27843 Comm: kworker/u5:1 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: hci6 hci_power_on
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1331 [inline]
RIP: 0010:update_rq_clock+0x49/0x9b0 kernel/sched/core.c:734
Code: ea 03 53 48 89 fb 48 83 ec 10 0f b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 6e 03 00 00 44 8b 1d 23 40 8e 0c <45> 85 db 74 51 48 8d bb 58 0d 00 00 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900001f0d08 EFLAGS: 00000046
RAX: 0000000000000007 RBX: ffff8880b9b39fc0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b9b39fc0
RBP: ffff888025923b00 R08: 0000000000000001 R09: 0000000000000003
R10: fffff5200003e194 R11: 0000000000000000 R12: ffffffff8de0fa8c
R13: ffff8880b9b39fc0 R14: ffff888025924498 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc207f1728 CR3: 00000000701af000 CR4: 0000000000350ee0
Call Trace:
ttwu_queue kernel/sched/core.c:3870 [inline]
try_to_wake_up+0xcaa/0x1e30 kernel/sched/core.c:4194
hrtimer_wakeup+0x43/0x60 kernel/time/hrtimer.c:1939
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x5fa/0xe40 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1113
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 f1 c4 4c 00 5d be 03 00 00 00 e9 d6 43 84 02 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 f9 24 87 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc900033df8b0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88805bec9d80 RSI: ffffffff81611f81 RDI: 0000000000000007
RBP: ffffc900033df8f0 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000200 R11: 2d203a64656c6961 R12: 000000000000002b
R13: ffff888011be1d80 R14: 0000000000000200 R15: ffffc900033df940
console_trylock_spinning kernel/printk/printk.c:1922 [inline]
vprintk_emit+0x3f7/0x5f0 kernel/printk/printk.c:2270
vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
_printk+0xba/0xed kernel/printk/printk.c:2292
bt_err+0xd7/0x107 net/bluetooth/lib.c:251
__hci_cmd_sync_status_sk+0x129/0x140 net/bluetooth/hci_sync.c:248
__hci_cmd_sync_status net/bluetooth/hci_sync.c:271 [inline]
hci_reset_sync+0x3e/0x50 net/bluetooth/hci_sync.c:3179
hci_init1_sync net/bluetooth/hci_sync.c:3313 [inline]
hci_init_sync net/bluetooth/hci_sync.c:4396 [inline]
hci_dev_init_sync net/bluetooth/hci_sync.c:4584 [inline]
hci_dev_open_sync+0x16ef/0x21a0 net/bluetooth/hci_sync.c:4664
hci_dev_do_open+0x2d/0x70 net/bluetooth/hci_core.c:483
hci_power_on+0xda/0x620 net/bluetooth/hci_core.c:984
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