NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
NOHZ: local_softirq_pending 08
INFO: task syz-executor.0:17895 blocked for more than 140 seconds.
Not tainted 4.19.125-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D27888 17895 6462 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2826 [inline]
__schedule+0x8a2/0x1fc0 kernel/sched/core.c:3515
schedule+0x8d/0x1b0 kernel/sched/core.c:3559
schedule_timeout+0x8f3/0xed0 kernel/time/timer.c:1782
__down_common kernel/locking/semaphore.c:221 [inline]
__down+0x192/0x2b0 kernel/locking/semaphore.c:238
down+0x57/0x80 kernel/locking/semaphore.c:62
console_lock+0x25/0x80 kernel/printk/printk.c:2244
vt_ioctl+0x105c/0x2500 drivers/tty/vt/vt_ioctl.c:843
tty_ioctl+0x7a5/0x1420 drivers/tty/tty_io.c:2669
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45ca29
Code: 8b 44 24 10 48 85 c0 74 09 48 8b 2c 24 48 83 c4 08 c3 e8 fa 96 fa ff 0f 0b 48 8d 7c 24 10 48 39 3b 75 dc 48 89 23 eb d7 cc cc <cc> cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 79
RSP: 002b:00007fd688e67c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e6cc0 RCX: 000000000045ca29
RDX: 0000000020000240 RSI: 0000000000005609 RDI: 0000000000000006
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000037a R14: 00000000004c60c9 R15: 00007fd688e686d4
Showing all locks held in the system:
1 lock held by khungtaskd/1079:
#0: 000000009dad672f (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440
1 lock held by in:imklog/6128:
#0: 00000000d7e3808b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:767
1 lock held by syz-executor.0/17885:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1079 Comm: khungtaskd Not tainted 4.19.125-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+0x1fc/0x2fe lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x962/0xe40 kernel/hung_task.c:287
kthread+0x30b/0x410 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 17885 Comm: syz-executor.0 Not tainted 4.19.125-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 kernel/kcov.c:101
Code: 00 00 e9 24 ec ff ff 90 48 8b 34 24 65 48 8b 04 25 40 ee 01 00 65 8b 15 2c 64 9a 7e 81 e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 <83> fa 02 75 20 48 8b 88 e0 12 00 00 8b 80 dc 12 00 00 48 8b 11 48
RSP: 0018:ffff8880466af4c8 EFLAGS: 00000246
RAX: ffff8880935ca340 RBX: 0000000000000000 RCX: ffffffff83774994
RDX: 0000000000000002 RSI: ffffffff8377495c RDI: 0000000000000005
RBP: ffff8880000a0200 R08: ffff8880935ca340 R09: 0000000000000040
R10: ffffed1014aa41a3 R11: ffff8880a5520d1f R12: 0000000000000050
R13: ffff8880000a0000 R14: 0000000000000000 R15: 0000000000000010
FS: 00007fd688e89700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b2361ba920 CR3: 000000009f2e8000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:64 [inline]
bitfill_aligned+0xfc/0x200 drivers/video/fbdev/core/cfbfillrect.c:35
cfb_fillrect+0x418/0x7a0 drivers/video/fbdev/core/cfbfillrect.c:327
vga16fb_fillrect+0x68f/0x1960 drivers/video/fbdev/vga16fb.c:951
bit_clear_margins+0x2d5/0x4a0 drivers/video/fbdev/core/bitblit.c:232
fbcon_clear_margins+0x2c7/0x350 drivers/video/fbdev/core/fbcon.c:1342
fbcon_switch+0xd9f/0x18f0 drivers/video/fbdev/core/fbcon.c:2324
redraw_screen+0x37d/0x870 drivers/tty/vt/vt.c:1015
vc_do_resize+0x108e/0x1380 drivers/tty/vt/vt.c:1317
vt_ioctl+0x10c1/0x2500 drivers/tty/vt/vt_ioctl.c:850
tty_ioctl+0x7a5/0x1420 drivers/tty/tty_io.c:2669
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45ca29
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:00007fd688e88c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e6cc0 RCX: 000000000045ca29
RDX: 0000000020000240 RSI: 0000000000005609 RDI: 0000000000000006
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000037a R14: 00000000004c60c9 R15: 00007fd688e896d4