INFO: task syz-executor373:5423 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5423 tgid:5423 ppid:5107 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x56f/0x27e0 kernel/exit.c:832
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x176e/0x1850 kernel/signal.c:2907
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007bfce RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c000 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
INFO: task syz-executor373:5425 blocked for more than 144 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:24944 pid:5425 tgid:5425 ppid:5101 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x56f/0x27e0 kernel/exit.c:832
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x176e/0x1850 kernel/signal.c:2907
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007bffc RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c02e R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
INFO: task syz-executor373:5426 blocked for more than 145 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5426 tgid:5426 ppid:5108 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x56f/0x27e0 kernel/exit.c:832
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x176e/0x1850 kernel/signal.c:2907
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007c002 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c034 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
INFO: task syz-executor373:5429 blocked for more than 146 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5429 tgid:5429 ppid:5103 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x56f/0x27e0 kernel/exit.c:832
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x176e/0x1850 kernel/signal.c:2907
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007c065 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c097 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
INFO: task syz-executor373:5430 blocked for more than 147 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5430 tgid:5430 ppid:5104 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x56f/0x27e0 kernel/exit.c:832
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x176e/0x1850 kernel/signal.c:2907
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 0000000000000004 RCX: 00007fccb08345a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fccb08c41c8
RBP: 00007fccb08c41c0 R08: 00000003b088a2b9 R09: 00000004b088a2b9
R10: 00007fccb07e90b0 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31ec0
INFO: task syz-executor373:5433 blocked for more than 149 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26264 pid:5433 tgid:5433 ppid:5105 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x56f/0x27e0 kernel/exit.c:832
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x176e/0x1850 kernel/signal.c:2907
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007c1e6 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c218 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:8/2818:
2 locks held by getty/4823:
#0: ffff88802a7f70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor373/5424:
4 locks held by syz-executor373/5428:
3 locks held by syz-executor373/5427:
4 locks held by syz-executor373/5432:
3 locks held by syz-executor373/5431:
3 locks held by syz-executor373/5434:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5427 Comm: syz-executor373 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4801 [inline]
RIP: 0010:__lock_acquire+0x928/0x1fd0 kernel/locking/lockdep.c:5087
Code: 00 fc ff df 90 0f 0b 90 90 90 31 db 48 8d ab c4 00 00 00 48 89 e8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 91 00 00 00 0f b6 6d 00 <40> 84 ed 74 32 0f b6 44 24 28 40 0f b6 cd 40 38 e8 0f 42 c8 89 4c
RSP: 0018:ffffc90005106530 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff92a09750 RCX: ffffffff8171a85e
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff92ce5598
RBP: 0000000000000000 R08: ffffffff92ce559f R09: 1ffffffff259cab3
R10: dffffc0000000000 R11: fffffbfff259cab4 R12: 0000000000000000
R13: ffff888022af46f8 R14: 0000000000000000 R15: ffff888022af46f8
FS: 00007fccb07e86c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f0df1bebe7 CR3: 000000006298a000 CR4: 0000000000350ef0
Call Trace:
lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
folio_add_lru+0x370/0xd70 mm/swap.c:515
filemap_add_folio+0x228/0x570 mm/filemap.c:962
page_cache_ra_unbounded+0x211/0x7c0 mm/readahead.c:250
do_sync_mmap_readahead+0x444/0x850
filemap_fault+0x7c6/0x1680 mm/filemap.c:3245
__do_fault+0x137/0x460 mm/memory.c:4396
do_read_fault mm/memory.c:4758 [inline]
do_fault mm/memory.c:4888 [inline]
do_pte_missing mm/memory.c:3745 [inline]
handle_pte_fault mm/memory.c:5164 [inline]
__handle_mm_fault+0x49e6/0x72d0 mm/memory.c:5305
handle_mm_fault+0x3c2/0x8a0 mm/memory.c:5470
faultin_page mm/gup.c:958 [inline]
__get_user_pages+0x6be/0x1600 mm/gup.c:1241
__get_user_pages_locked mm/gup.c:1509 [inline]
get_dump_page+0x155/0x2f0 mm/gup.c:2031
dump_user_range+0x14c/0x950 fs/coredump.c:949
elf_core_dump+0x3d5e/0x4630 fs/binfmt_elf.c:2077
do_coredump+0x1bad/0x2b50 fs/coredump.c:764
get_signal+0x146b/0x1850 kernel/signal.c:2893
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
irqentry_exit_to_user_mode+0x79/0x270 kernel/entry/common.c:225
exc_page_fault+0x585/0x890 arch/x86/mm/fault.c:1566
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fccb07fabf0
Code: 48 00 00 20 6c 62 30 00 e8 bd 99 03 00 48 83 f8 ff 0f 84 43 ff ff ff 48 89 05 34 15 0c 00 e9 37 ff ff ff 0f 1f 80 00 00 00 00 <4c> 89 34 25 00 00 00 20 45 31 c9 45 31 c0 31 c9 ba 00 00 00 20 31
RSP: 002b:00007fccb07e8220 EFLAGS: 00010217
RAX: 00007fccb07fabf0 RBX: 00007fccb08c41c8 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41c8
RBP: 00007fccb08c41c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fccb088a6bc
R13: 6c756e2f7665642f R14: 0030656c69662f2e R15: 4c2e303030325039
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.519 msecs