audit: type=1800 audit(1617797834.727:448): pid=16267 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=14498 res=0 BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 16267 Comm: syz-executor.1 Not tainted 4.14.229-syzkaller #0 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+0x1b2/0x281 lib/dump_stack.c:58 add_chain_cache kernel/locking/lockdep.c:2303 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:2415 [inline] validate_chain kernel/locking/lockdep.c:2435 [inline] __lock_acquire.cold+0x19a/0x97c kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160 lock_hrtimer_base kernel/time/hrtimer.c:148 [inline] hrtimer_start_range_ns+0x77/0x10b0 kernel/time/hrtimer.c:955 hrtimer_start include/linux/hrtimer.h:377 [inline] perf_swevent_start_hrtimer kernel/events/core.c:8779 [inline] perf_swevent_start_hrtimer kernel/events/core.c:8762 [inline] cpu_clock_event_start+0x100/0x160 kernel/events/core.c:8837 cpu_clock_event_add+0x37/0x40 kernel/events/core.c:8849 event_sched_in+0x498/0xdb0 kernel/events/core.c:2134 group_sched_in+0xfb/0x400 kernel/events/core.c:2174 ctx_flexible_sched_in kernel/events/core.c:3199 [inline] ctx_sched_in+0x1303/0x1860 kernel/events/core.c:3245 perf_event_sched_in+0x69/0xa0 kernel/events/core.c:2332 perf_event_context_sched_in kernel/events/core.c:3285 [inline] __perf_event_task_sched_in+0x5a3/0x8c0 kernel/events/core.c:3324 perf_event_task_sched_in include/linux/perf_event.h:1087 [inline] finish_task_switch+0x3c9/0x610 kernel/sched/core.c:2664 context_switch kernel/sched/core.c:2811 [inline] __schedule+0x893/0x1de0 kernel/sched/core.c:3384 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:3508 ___preempt_schedule+0x16/0x18 perf_iterate_sb+0x701/0x8a0 kernel/events/core.c:6434 perf_event_comm_event kernel/events/core.c:6751 [inline] perf_event_comm+0x197/0x1f0 kernel/events/core.c:6778 set_task_comm include/linux/sched.h:1560 [inline] comm_write+0x1b1/0x1f0 fs/proc/base.c:1560 __vfs_write+0xe4/0x630 fs/read_write.c:480 __kernel_write+0xf5/0x330 fs/read_write.c:501 write_pipe_buf+0x143/0x1c0 fs/splice.c:797 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x326/0x7a0 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] default_file_splice_write+0xc5/0x150 fs/splice.c:809 do_splice_from fs/splice.c:851 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1018 splice_direct_to_actor+0x27c/0x730 fs/splice.c:973 do_splice_direct+0x164/0x210 fs/splice.c:1061 do_sendfile+0x47f/0xb30 fs/read_write.c:1441 SYSC_sendfile64 fs/read_write.c:1502 [inline] SyS_sendfile64+0xff/0x110 fs/read_write.c:1488 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007f044ac55188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000800000000035 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc5c319e4f R14: 00007f044ac55300 R15: 0000000000022000 ip6_tables: ip6tables: counters copy to user failed while replacing table ip6_tables: ip6tables: counters copy to user failed while replacing table ip6_tables: ip6tables: counters copy to user failed while replacing table ip6_tables: ip6tables: counters copy to user failed while replacing table ip6_tables: ip6tables: counters copy to user failed while replacing table ip6_tables: ip6tables: counters copy to user failed while replacing table ip6_tables: ip6tables: counters copy to user failed while replacing table audit: type=1800 audit(1617797835.777:449): pid=16320 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=14660 res=0 ip6_tables: ip6tables: counters copy to user failed while replacing table audit: type=1800 audit(1617797836.117:450): pid=16342 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=14673 res=0 audit: type=1800 audit(1617797839.987:451): pid=16469 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=65538 res=0 audit: type=1800 audit(1617797840.097:452): pid=16479 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=196614 res=0 audit: type=1800 audit(1617797840.787:453): pid=16501 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=327690 res=0 audit: type=1800 audit(1617797841.167:454): pid=16518 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=458766 res=0 audit: type=1800 audit(1617797841.387:455): pid=16523 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.3" name="SYSV00000000" dev="hugetlbfs" ino=65538 res=0 audit: type=1800 audit(1617797841.417:456): pid=16526 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.2" name="SYSV00000000" dev="hugetlbfs" ino=65538 res=0 audit: type=1800 audit(1617797841.517:457): pid=16531 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=589842 res=0 audit: type=1800 audit(1617797841.817:458): pid=16543 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.2" name="SYSV00000000" dev="hugetlbfs" ino=196614 res=0 audit: type=1800 audit(1617797841.877:459): pid=16550 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.4" name="SYSV00000000" dev="hugetlbfs" ino=98307 res=0 audit: type=1800 audit(1617797841.877:460): pid=16552 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.1" name="SYSV00000000" dev="hugetlbfs" ino=131075 res=0 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. new mount options do not match the existing superblock, will be ignored new mount options do not match the existing superblock, will be ignored kvm [17102]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec new mount options do not match the existing superblock, will be ignored new mount options do not match the existing superblock, will be ignored new mount options do not match the existing superblock, will be ignored new mount options do not match the existing superblock, will be ignored kvm [17160]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec kvm [17175]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec new mount options do not match the existing superblock, will be ignored new mount options do not match the existing superblock, will be ignored kvm [17197]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec kvm [17198]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec kvm [17203]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc2 data 0x3ad6e37883b8e6ec