INFO: task syz.2.802:8997 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.802 state:D stack:28592 pid:8997 tgid:8995 ppid:5229 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0xef5/0x5750 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:418 [inline]
do_coredump+0x82f/0x4160 fs/coredump.c:575
get_signal+0x237c/0x26d0 kernel/signal.c:2902
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f603697dff9
RSP: 002b:00007f60376950e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f6036b36060 RCX: 00007f603697dff9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f6036b36064
RBP: 00007f6036b36058 R08: 00007f60376b7080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6036b36064
R13: 0000000000000000 R14: 00007ffcd2c132d0 R15: 00007ffcd2c133b8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8ddb77c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8ddb77c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8ddb77c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6701
2 locks held by getty/4988:
#0: ffff88802e52c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz.0.702/8486:
1 lock held by syz.2.802/8996:
1 lock held by syz.1.1146/10600:
2 locks held by syz.3.1192/10922:
3 locks held by syz.3.1195/10931:
5 locks held by syz.3.1195/10968:
2 locks held by syz.1.1207/10994:
3 locks held by syz.1.1207/10995:
2 locks held by syz.0.1209/10998:
1 lock held by syz.2.1213/11012:
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x160/0x360 mm/util.c:586
1 lock held by syz.2.1213/11014:
#0: ffff88807f810420 (sb_writers#5){.+.+}-{0:0}, at: do_open fs/namei.c:3767 [inline]
#0: ffff88807f810420 (sb_writers#5){.+.+}-{0:0}, at: path_openat+0x237b/0x2d60 fs/namei.c:3933
1 lock held by syz.2.1213/11015:
1 lock held by syz.2.1213/11016:
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:6108 [inline]
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x3a9/0x6a0 mm/memory.c:6159
1 lock held by syz.2.1213/11017:
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline]
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:6108 [inline]
#0: ffff888030b1a798 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x3a9/0x6a0 mm/memory.c:6159
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5929 Comm: kworker/u8:11 Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:103 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x64/0x1a0 mm/kasan/generic.c:189
Code: 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 49 8d 59 01 48 89 da 48 29 ea <48> 83 fa 10 0f 8e 8d 00 00 00 41 89 eb 41 83 e3 07 0f 85 9a 00 00
RSP: 0018:ffffc900137378a8 EFLAGS: 00000002
RAX: fffffbfff34bdce3 RBX: fffffbfff34bdce4 RCX: ffffffff816a3213
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff9a5ee718
RBP: fffffbfff34bdce3 R08: 0000000000000000 R09: fffffbfff34bdce3
R10: ffffffff9a5ee71b R11: ffffffff8b4f6880 R12: 0000000000000002
R13: ffff88806846d768 R14: 1ffff920026e6f24 R15: ffffffff9a5ee710
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000db7c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
queued_spin_is_locked include/asm-generic/qspinlock.h:57 [inline]
debug_spin_unlock kernel/locking/spinlock_debug.c:101 [inline]
do_raw_spin_unlock+0x53/0x230 kernel/locking/spinlock_debug.c:141
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock_irqrestore+0x22/0x80 kernel/locking/spinlock.c:194
debug_object_activate+0x34d/0x540 lib/debugobjects.c:726
debug_timer_activate kernel/time/timer.c:836 [inline]
__mod_timer+0x81d/0xdc0 kernel/time/timer.c:1171
add_timer_global+0x8a/0xc0 kernel/time/timer.c:1330
__queue_delayed_work+0x1ba/0x2e0 kernel/workqueue.c:2523
queue_delayed_work_on+0x12a/0x150 kernel/workqueue.c:2552
queue_delayed_work include/linux/workqueue.h:677 [inline]
batadv_nc_start_timer net/batman-adv/network-coding.c:72 [inline]
batadv_nc_worker+0xb08/0x1060 net/batman-adv/network-coding.c:741
process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244