INFO: task syz-executor.0:20589 blocked for more than 143 seconds.
Not tainted 5.7.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D27408 20589 7032 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3367 [inline]
__schedule+0x805/0xc90 kernel/sched/core.c:4083
schedule+0x188/0x220 kernel/sched/core.c:4158
schedule_timeout+0x43/0x250 kernel/time/timer.c:1874
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:50
trace_hardirqs_on+0x30/0x70 kernel/trace/trace_preemptirq.c:25
__down_common+0x28a/0x520 kernel/locking/semaphore.c:220
down+0x65/0xa0 kernel/locking/semaphore.c:61
console_lock+0x24/0x70 kernel/printk/printk.c:2314
do_fb_ioctl+0x4c9/0x6f0 drivers/video/fbdev/core/fbmem.c:1106
do_vfs_ioctl+0x2c3/0x1a00 fs/ioctl.c:749
fb_write+0x540/0x540 drivers/video/fbdev/core/fbmem.c:849
vfs_ioctl fs/ioctl.c:47 [inline]
ksys_ioctl fs/ioctl.c:771 [inline]
__do_sys_ioctl fs/ioctl.c:780 [inline]
__se_sys_ioctl+0xf9/0x160 fs/ioctl.c:778
do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
INFO: task syz-executor.4:20600 blocked for more than 143 seconds.
Not tainted 5.7.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D26576 20600 7517 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3367 [inline]
__schedule+0x805/0xc90 kernel/sched/core.c:4083
check_preemption_disabled+0x33/0x240 lib/smp_processor_id.c:16
schedule+0x188/0x220 kernel/sched/core.c:4158
schedule_timeout+0x43/0x250 kernel/time/timer.c:1874
trace_hardirqs_on+0x30/0x70 kernel/trace/trace_preemptirq.c:25
arch_local_irq_enable arch/x86/include/asm/paravirt.h:769 [inline]
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
_raw_spin_unlock_irq+0x57/0x80 kernel/locking/spinlock.c:199
__down_common+0x28a/0x520 kernel/locking/semaphore.c:220
down+0x65/0xa0 kernel/locking/semaphore.c:61
console_lock+0x24/0x70 kernel/printk/printk.c:2314
do_fb_ioctl+0x4c9/0x6f0 drivers/video/fbdev/core/fbmem.c:1106
trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41
check_preemption_disabled+0xa2/0x240 lib/smp_processor_id.c:19
fb_write+0x540/0x540 drivers/video/fbdev/core/fbmem.c:849
vfs_ioctl fs/ioctl.c:47 [inline]
ksys_ioctl fs/ioctl.c:771 [inline]
__do_sys_ioctl fs/ioctl.c:780 [inline]
__se_sys_ioctl+0xf9/0x160 fs/ioctl.c:778
do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
INFO: task syz-executor.3:20606 blocked for more than 143 seconds.
Not tainted 5.7.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3 D28576 20606 7360 0x00004004
Call Trace:
context_switch kernel/sched/core.c:3367 [inline]
__schedule+0x805/0xc90 kernel/sched/core.c:4083
schedule+0x188/0x220 kernel/sched/core.c:4158
schedule_timeout+0x43/0x250 kernel/time/timer.c:1874
mark_held_locks kernel/locking/lockdep.c:3628 [inline]
__trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
lockdep_hardirqs_on+0x4a4/0x8a0 kernel/locking/lockdep.c:3702
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
_raw_spin_unlock_irq+0x1f/0x80 kernel/locking/spinlock.c:199
__down_common+0x28a/0x520 kernel/locking/semaphore.c:220
down+0x65/0xa0 kernel/locking/semaphore.c:61
console_lock+0x24/0x70 kernel/printk/printk.c:2314
do_con_write+0x76/0xf2d0 drivers/tty/vt/vt.c:2591
__lock_acquire+0x116c/0x2c30 kernel/locking/lockdep.c:4355
lock_acquire+0x169/0x480 kernel/locking/lockdep.c:4934
n_tty_write+0x53a/0x1170 drivers/tty/n_tty.c:2355
__mutex_lock_common+0x582/0x2fc0 kernel/locking/mutex.c:964
add_wait_queue+0x3e/0x130 kernel/sched/wait.c:23
n_tty_write+0x53a/0x1170 drivers/tty/n_tty.c:2355
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irqrestore+0x6f/0xd0 kernel/locking/spinlock.c:191
con_write+0x20/0x40 drivers/tty/vt/vt.c:3154
n_tty_write+0x584/0x1170 drivers/tty/n_tty.c:2356
wait_woken+0x240/0x240 kernel/sched/wait.c:442
do_tty_write drivers/tty/tty_io.c:962 [inline]
tty_write+0x593/0x940 drivers/tty/tty_io.c:1046
n_tty_read+0x1bc0/0x1bc0 drivers/tty/n_tty.c:2186
redirected_tty_write+0xb0/0xb0 drivers/tty/tty_io.c:1067
__vfs_write+0xa7/0x710 fs/read_write.c:495
rcu_read_unlock include/linux/rcupdate.h:655 [inline]
__fget_files+0x4b9/0x4e0 fs/file.c:734
fsnotify_perm+0x64/0x390 include/linux/fsnotify.h:87
vfs_write+0x274/0x580 fs/read_write.c:559
ksys_write+0x11b/0x220 fs/read_write.c:612
do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
Showing all locks held in the system:
1 lock held by khungtaskd/1143:
#0: ffffffff892e8550 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 net/mptcp/pm_netlink.c:860
1 lock held by in:imklog/6683:
#0: ffff88809fe9a670 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x25d/0x2f0 fs/file.c:826
1 lock held by syz-executor.5/20594:
4 locks held by syz-executor.3/20606:
#0: ffff88809838c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:267
#1: ffff88809838c130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:888 [inline]
#1: ffff88809838c130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: do_tty_write drivers/tty/tty_io.c:911 [inline]
#1: ffff88809838c130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write+0x22c/0x940 drivers/tty/tty_io.c:1046
#2: ffff88809838c2e8 (&tty->termios_rwsem){++++}-{3:3}, at: n_tty_write+0x1e0/0x1170 drivers/tty/n_tty.c:2316
#3: ffffc90000f74378 (&ldata->output_lock){+.+.}-{3:3}, at: n_tty_write+0x53a/0x1170 drivers/tty/n_tty.c:2355
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1143 Comm: khungtaskd Not tainted 5.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1e9/0x30e lib/dump_stack.c:118
nmi_cpu_backtrace+0x9f/0x180 lib/nmi_backtrace.c:101
arch_trigger_cpumask_backtrace+0x10/0x10 arch/x86/kernel/apic/hw_nmi.c:38
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
watchdog+0xd2a/0xd40 kernel/hung_task.c:289
kthread+0x353/0x380 kernel/kthread.c:268
hungtask_pm_notify+0x50/0x50 kernel/hung_task.c:265
kthread_blkcg+0xd0/0xd0 kernel/kthread.c:1247
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20594 Comm: syz-executor.5 Not tainted 5.7.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bitfill_aligned+0x61/0x1f0 drivers/video/fbdev/core/cfbfillrect.c:44
Code: ff ff ff ff 89 e9 48 d3 e0 48 89 44 24 10 49 c7 c4 ff ff ff ff 48 89 6c 24 20 4c 89 7c 24 18 41 01 ef 44 89 f8 31 d2 41 f7 f5 <89> d5 89 e9 49 d3 e4 44 89 ff 44 89 ee e8 dd 1c a6 fd 44 89 6c 24
RSP: 0018:ffffc900060577e8 EFLAGS: 00000246
RAX: 0000000000000028 RBX: ffff8880000a0000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000a00 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff83cd45fb R09: 0000000000000040
R10: ffff88805d5f41c0 R11: 0000000000000002 R12: ffffffffffffffff
R13: 0000000000000040 R14: 0000000000000000 R15: 0000000000000a00
FS: 00007fa43ae7f700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003f35000 CR3: 000000009a4fc000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bitfill_aligned_rev+0x1e0/0x1e0 drivers/video/fbdev/core/cfbfillrect.c:206
cfb_fillrect+0x57b/0x790 drivers/video/fbdev/core/cfbfillrect.c:327
bit_clear_margins+0x37b/0x620 drivers/video/fbdev/core/bitblit.c:232
fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1381 [inline]
fbcon_do_set_font+0xce2/0x1220 drivers/video/fbdev/core/fbcon.c:2613
fbcon_set_font+0x782/0x970 drivers/video/fbdev/core/fbcon.c:2705
fbcon_blank+0x930/0x930 drivers/video/fbdev/core/fbcon.c:2390
con_font_set drivers/tty/vt/vt.c:4566 [inline]
con_font_op+0xebc/0x1630 drivers/tty/vt/vt.c:4631
save_stack mm/kasan/common.c:49 [inline]
set_track mm/kasan/common.c:57 [inline]
kasan_set_free_info mm/kasan/common.c:317 [inline]
__kasan_slab_free+0x125/0x190 mm/kasan/common.c:456
vt_ioctl+0x179d/0x3eb0 drivers/tty/vt/vt_ioctl.c:265
rcu_lock_release+0x5/0x20 include/linux/rcupdate.h:212
tomoyo_path_number_perm+0x58f/0x690 security/tomoyo/file.c:739
tty_jobctrl_ioctl+0x1e8/0xc20 drivers/tty/tty_jobctrl.c:539
tty_ioctl+0xee4/0x15c0 drivers/tty/tty_io.c:2656
tty_do_resize+0x180/0x180 drivers/tty/tty_io.c:2248
vfs_ioctl fs/ioctl.c:47 [inline]
ksys_ioctl fs/ioctl.c:771 [inline]
__do_sys_ioctl fs/ioctl.c:780 [inline]
__se_sys_ioctl+0xf9/0x160 fs/ioctl.c:778
do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45c829
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa43ae7ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004eeae0 RCX: 000000000045c829
RDX: 0000000020000040 RSI: 0000000000004b61 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000057c R14: 00000000004c8110 R15: 00007fa43ae7f6d4