INFO: task syz.4.6724:30685 blocked for more than 143 seconds.
Not tainted 6.11.0-rc3-syzkaller-00007-gd74da846046a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.6724 state:D stack:24672 pid:30685 tgid:30685 ppid:29293 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
do_task_dead+0xc4/0xd0 kernel/sched/core.c:6545
do_exit+0x1e7c/0x27f0 kernel/exit.c:933
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x1695/0x1730 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
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+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbadd1799f9
RSP: 002b:00007fff071cc2e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000026cd53 RCX: 00007fbadd1799f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fbadd31613c
RBP: 00007fbadd31613c R08: 00007fbadd315f80 R09: 00007fff071cc5cf
R10: 00007fff071cc3e0 R11: 0000000000000246 R12: 0000000000000032
R13: 00007fff071cc3e0 R14: 00007fff071cc400 R15: 000000000026cd21
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e7382e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e7382e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e7382e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by getty/4967:
#0: ffff88802ad6f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by kworker/u8:13/15801:
5 locks held by kworker/u8:0/22147:
2 locks held by syz.4.6724/30695:
1 lock held by syz.3.7073/31919:
#0: ffff88807b89b118 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline]
#0: ffff88807b89b118 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x17c/0x3d0 mm/util.c:586
1 lock held by syz.3.7073/31921:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc3-syzkaller-00007-gd74da846046a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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: 15794 Comm: kworker/u8:1 Not tainted 6.11.0-rc3-syzkaller-00007-gd74da846046a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:addr_has_metadata mm/kasan/kasan.h:333 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0x24/0x290 mm/kasan/generic.c:189
Code: 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02 00 00 <48> 89 fd 48 c1 ed 2f 81 fd fe ff 01 00 0f 86 43 02 00 00 48 89 fb
RSP: 0018:ffffc90003e07358 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000038 RCX: ffffffff81702e6a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff934f1840
RBP: 0000000000000002 R08: ffffffff934f1848 R09: 1ffffffff269e308
R10: dffffc0000000000 R11: fffffbfff269e309 R12: ffff88804c928000
R13: dffffc0000000000 R14: 0000000000000004 R15: ffff88804c928bd0
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1336ae3ff0 CR3: 000000000e534000 CR4: 00000000003506f0
DR0: 0000000000000621 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:227 [inline]
mark_lock+0x9a/0x350 kernel/locking/lockdep.c:4655
mark_usage kernel/locking/lockdep.c:4586 [inline]
__lock_acquire+0x115d/0x2040 kernel/locking/lockdep.c:5096
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
__pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:375
get_locked_pte include/linux/mm.h:2709 [inline]
__text_poke+0x2c5/0xd30 arch/x86/kernel/alternative.c:1899
text_poke arch/x86/kernel/alternative.c:1984 [inline]
text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2373
text_poke_flush arch/x86/kernel/alternative.c:2486 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:833
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244