audit: type=1400 audit(1561786044.356:37): avc: denied { map } for pid=7099 comm="syz-executor232" path="/root/syz-executor232886150" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
INFO: rcu_sched self-detected stall on CPU
0-...: (10499 ticks this GP) idle=6e6/140000000000001/0 softirq=23189/23194 fqs=0
(t=10500 jiffies g=925 c=924 q=4)
rcu_sched kthread starved for 10500 jiffies! g925 c924 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_sched R running task 29824 9 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2807 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383
schedule+0x92/0x1c0 kernel/sched/core.c:3427
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1744
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 0
CPU: 0 PID: 7107 Comm: syz-executor232 Not tainted 4.14.131 #25
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x138/0x19c lib/dump_stack.c:53
nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x141/0x189 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x186/0x1d2 kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0x43d/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1588
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:789
RIP: 0010:debug_smp_processor_id+0x1c/0x20 lib/smp_processor_id.c:58
RSP: 0018:ffff88808fb7f470 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffffffff87ab2740 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff869d29a0 RDI: ffffffff869d29e0
RBP: ffff88808fb7f470 R08: 000000000000001c R09: ffffea00021c8a40
R10: ffff8880a5849a40 R11: ffff8880872297e3 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888095f255f0 R15: 000000000000001c
rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1186 [inline]
rcu_lockdep_current_cpu_online+0x3a/0x140 kernel/rcu/tree.c:1177
rcu_read_lock_sched_held+0x97/0x130 kernel/rcu/update.c:113
trace_writeback_mark_inode_dirty include/trace/events/writeback.h:114 [inline]
__mark_inode_dirty+0x8f4/0x1040 fs/fs-writeback.c:2125
mark_inode_dirty include/linux/fs.h:2019 [inline]
generic_write_end+0x1b7/0x290 fs/buffer.c:2218
ext4_da_write_end+0x344/0x8e0 fs/ext4/inode.c:3181
generic_perform_write+0x29f/0x480 mm/filemap.c:3035
__generic_file_write_iter+0x239/0x5b0 mm/filemap.c:3149
ext4_file_write_iter+0x2ac/0xe90 fs/ext4/file.c:264
call_write_iter include/linux/fs.h:1777 [inline]
do_iter_readv_writev+0x418/0x670 fs/read_write.c:675
do_iter_write fs/read_write.c:954 [inline]
do_iter_write+0x154/0x540 fs/read_write.c:935
vfs_iter_write+0x77/0xb0 fs/read_write.c:967
iter_file_splice_write+0x572/0xad0 fs/splice.c:749
do_splice_from fs/splice.c:851 [inline]
direct_splice_actor+0x123/0x190 fs/splice.c:1018
splice_direct_to_actor+0x29e/0x7b0 fs/splice.c:973
do_splice_direct+0x18d/0x230 fs/splice.c:1061
do_sendfile+0x4db/0xbd0 fs/read_write.c:1441
SYSC_sendfile64 fs/read_write.c:1496 [inline]
SyS_sendfile64+0x9d/0x110 fs/read_write.c:1488
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4417a9
RSP: 002b:00007fff5f5841a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fff5f584350 RCX: 00000000004417a9
RDX: 0000000020000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00008080fffffffe R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000402480 R14: 0000000000000000 R15: 0000000000000000
INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10554 jiffies, g=1220, c=1219, q=23)
All QSes seen, last rcu_preempt kthread activity 10554 (4295013694-4295003140), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor232 R running task 26976 7107 7103 0x00000008
Call Trace:
sched_show_task kernel/sched/core.c:5167 [inline]
sched_show_task.cold+0x294/0x2ff kernel/sched/core.c:5142
print_other_cpu_stall kernel/rcu/tree.c:1501 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0xcb1/0xd0a kernel/rcu/tree.c:2792
update_process_times+0x31/0x70 kernel/time/timer.c:1588
tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
__run_hrtimer kernel/time/hrtimer.c:1220 [inline]
__hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:789
RIP: 0010:debug_smp_processor_id+0x1c/0x20 lib/smp_processor_id.c:58
RSP: 0018:ffff88808fb7f470 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffffffff87ab2740 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff869d29a0 RDI: ffffffff869d29e0
RBP: ffff88808fb7f470 R08: 000000000000001c R09: ffffea00021c8a40
R10: ffff8880a5849a40 R11: ffff8880872297e3 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888095f255f0 R15: 000000000000001c
rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1186 [inline]
rcu_lockdep_current_cpu_online+0x3a/0x140 kernel/rcu/tree.c:1177
rcu_read_lock_sched_held+0x97/0x130 kernel/rcu/update.c:113
trace_writeback_mark_inode_dirty include/trace/events/writeback.h:114 [inline]
__mark_inode_dirty+0x8f4/0x1040 fs/fs-writeback.c:2125
mark_inode_dirty include/linux/fs.h:2019 [inline]
generic_write_end+0x1b7/0x290 fs/buffer.c:2218
ext4_da_write_end+0x344/0x8e0 fs/ext4/inode.c:3181
generic_perform_write+0x29f/0x480 mm/filemap.c:3035
__generic_file_write_iter+0x239/0x5b0 mm/filemap.c:3149
ext4_file_write_iter+0x2ac/0xe90 fs/ext4/file.c:264
call_write_iter include/linux/fs.h:1777 [inline]
do_iter_readv_writev+0x418/0x670 fs/read_write.c:675
do_iter_write fs/read_write.c:954 [inline]
do_iter_write+0x154/0x540 fs/read_write.c:935
vfs_iter_write+0x77/0xb0 fs/read_write.c:967
iter_file_splice_write+0x572/0xad0 fs/splice.c:749
do_splice_from fs/splice.c:851 [inline]
direct_splice_actor+0x123/0x190 fs/splice.c:1018
splice_direct_to_actor+0x29e/0x7b0 fs/splice.c:973
do_splice_direct+0x18d/0x230 fs/splice.c:1061
do_sendfile+0x4db/0xbd0 fs/read_write.c:1441
SYSC_sendfile64 fs/read_write.c:1496 [inline]
SyS_sendfile64+0x9d/0x110 fs/read_write.c:1488
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4417a9
RSP: 002b:00007fff5f5841a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fff5f584350 RCX: 00000000004417a9
RDX: 0000000020000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00008080fffffffe R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000402480 R14: 0000000000000000 R15: 0000000000000000
rcu_preempt kthread starved for 10554 jiffies! g1220 c1219 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29776 8 2 0x80000000
Call Trace:
context_switch kernel/sched/core.c:2807 [inline]
__schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383
schedule+0x92/0x1c0 kernel/sched/core.c:3427
schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1744
rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
kthread+0x319/0x430 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404