INFO: task syz-executor330:5030 blocked for more than 143 seconds.
Not tainted 6.4.0-next-20230630-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor330 state:D stack:28032 pid:5030 ppid:5029 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:816 [inline]
blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
vfs_fallocate+0x491/0xe90 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xd3/0x140 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6d29a77e29
RSP: 002b:00007ffc173d5818 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f6d29a77e29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0008000001002000 R11: 0000000000000246 R12: 00007f6d29a3b600
R13: 0000000000000000 R14: 00007ffc173d5840 R15: 00007ffc173d5830
INFO: task syz-executor330:5035 blocked for more than 143 seconds.
Not tainted 6.4.0-next-20230630-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor330 state:D stack:27584 pid:5035 ppid:5031 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:816 [inline]
blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
vfs_fallocate+0x491/0xe90 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xd3/0x140 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6d29a77e29
RSP: 002b:00007ffc173d5818 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f6d29a77e29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0008000001002000 R11: 0000000000000246 R12: 00007f6d29a3b600
R13: 0000000000000000 R14: 00007ffc173d5840 R15: 00007ffc173d5830
INFO: task syz-executor330:5053 blocked for more than 143 seconds.
Not tainted 6.4.0-next-20230630-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor330 state:D stack:27232 pid:5053 ppid:5025 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6709
schedule+0xde/0x1a0 kernel/sched/core.c:6785
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6844
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
filemap_invalidate_lock include/linux/fs.h:816 [inline]
blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
vfs_fallocate+0x491/0xe90 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xd3/0x140 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6d29a77e29
RSP: 002b:00007ffc173d5818 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f6d29a77e29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0008000001002000 R11: 0000000000000246 R12: 000000000000e36e
R13: 00007ffc173d582c R14: 00007ffc173d5840 R15: 00007ffc173d5830
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a2170 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a1e70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c9a2d80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4777:
#0: ffff88814ac0a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf08/0x13f0 drivers/tty/n_tty.c:2187
1 lock held by syz-executor330/5030:
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
1 lock held by syz-executor330/5034:
1 lock held by syz-executor330/5035:
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
1 lock held by syz-executor330/5053:
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
1 lock held by syz-executor330/5054:
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
1 lock held by syz-executor330/5061:
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline]
#0: ffff888148cace48 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e8/0x3e0 block/fops.c:659
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-next-20230630-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 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+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 76 Comm: kworker/u4:4 Not tainted 6.4.0-next-20230630-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__lock_acquire+0x987/0x5e20 kernel/locking/lockdep.c:5127
Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f2 4a 00 00 44 8b 4c 24 10 49 8b 9c 24 b8 0a 00 00 45 85 c9 0f 84 33 06 00 00 45 31 ff <48> b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f
RSP: 0018:ffffc900015b7868 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 09d2557549e10215 RCX: ffffffff81661a54
RDX: 1ffff110033d78c7 RSI: 0000000000000008 RDI: ffffffff91867e80
RBP: ffff888019ebc6c0 R08: 0000000000000000 R09: 0000000000000003
R10: ffffffff91867e87 R11: 0000000000000001 R12: ffff888019ebbb80
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb08651c580 CR3: 000000000c775000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5761 [inline]
lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5726
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747
jump_label_lock kernel/jump_label.c:27 [inline]
static_key_disable_cpuslocked+0x10c/0x1b0 kernel/jump_label.c:233
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate mm/kfence/core.c:836 [inline]
toggle_allocation_gate+0x143/0x230 mm/kfence/core.c:823
process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.380 msecs