audit: type=1804 audit(1647087589.343:6): pid=9503 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1005118376/syzkaller.s7d4z8/2/bus" dev="sda1" ino=13906 res=1 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:9500] Modules linked in: irq event stamp: 4012233 hardirqs last enabled at (4012232): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (4012232): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:192 hardirqs last disabled at (4012233): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (3456): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (3863): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (3863): [] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 9500 Comm: syz-executor.2 Not tainted 4.14.271-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880995e0300 task.stack: ffff88804eca8000 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192 RSP: 0018:ffff8880ba407518 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e12f1 RBX: 0000000000000286 RCX: 1ffff110132bc17a RDX: dffffc0000000000 RSI: ffff8880995e0c28 RDI: 0000000000000286 RBP: ffffffff893d5460 R08: ffffffff8b9dcbb8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880969ff818 R13: dffffc0000000000 R14: ffff888096db35b0 R15: dffffc0000000000 FS: 00007f0a3fb3c700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9e6b50c903 CR3: 0000000096f3d000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fill_pool lib/debugobjects.c:118 [inline] __debug_object_init+0x555/0x7a0 lib/debugobjects.c:341 debug_object_init lib/debugobjects.c:393 [inline] debug_object_activate+0x391/0x490 lib/debugobjects.c:474 debug_rcu_head_queue kernel/rcu/rcu.h:152 [inline] __call_rcu.constprop.0+0x31/0x7d0 kernel/rcu/tree.c:3050 dst_release+0x56/0x80 net/core/dst.c:188 refdst_drop include/net/dst.h:286 [inline] skb_dst_drop include/net/dst.h:298 [inline] __dev_queue_xmit+0x1543/0x2480 net/core/dev.c:3480 neigh_resolve_output+0x4e5/0x870 net/core/neighbour.c:1369 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0xf48/0x1f10 net/ipv6/ip6_output.c:120 ip6_finish_output+0x5c6/0xd50 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:209 dst_output include/net/dst.h:470 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] ndisc_send_skb+0x82a/0x1390 net/ipv6/ndisc.c:483 ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677 addrconf_rs_timer+0x2bb/0x5a0 net/ipv6/addrconf.c:3769 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3614 RSP: 0018:ffff88804ecaf830 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e12f3 RBX: dffffc0000000000 RCX: 1ffff110132bc175 RDX: 0000000000000000 RSI: ffff8880995e0b88 RDI: ffff8880995e0b84 RBP: ffffed10132bc060 R08: ffff88823fff7018 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880995e0300 R13: ffffffff88f09798 R14: 0000000000000000 R15: 0000000000000000 retint_kernel+0x1b/0x2d RIP: 0010:lock_acquire+0x1f/0x3f0 kernel/locking/lockdep.c:3987 RSP: 0018:ffff88804ecaf908 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffff888052d5e658 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888052d5e6b8 RBP: ffff888052d5e7f0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8880995e0300 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 down_read+0x36/0x80 kernel/locking/rwsem.c:24 ext4_xattr_get+0x107/0x8b0 fs/ext4/xattr.c:647 __vfs_getxattr+0xb9/0x100 fs/xattr.c:349 cap_inode_need_killpriv+0x3c/0x50 security/commoncap.c:307 security_inode_need_killpriv+0x66/0xa0 security/security.c:791 dentry_needs_remove_privs fs/inode.c:1797 [inline] dentry_needs_remove_privs+0x87/0xd0 fs/inode.c:1787 do_truncate+0xa7/0x1a0 fs/open.c:55 handle_truncate fs/namei.c:3010 [inline] do_last fs/namei.c:3437 [inline] path_openat+0x1dcc/0x2970 fs/namei.c:3569 do_filp_open+0x179/0x3c0 fs/namei.c:3603 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f0a411c7049 RSP: 002b:00007f0a3fb3c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f0a412d9f60 RCX: 00007f0a411c7049 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f0a4122108d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc5a4f9a8f R14: 00007f0a3fb3c300 R15: 0000000000022000 Code: fa 48 c7 c0 88 97 f0 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d cc 5e cc 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 25 e3 db f9 eb c0 0f 0b 0f 0b 48 c7 c7 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9505 Comm: syz-executor.4 Not tainted 4.14.271-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880b5552440 task.stack: ffff88804edd0000 RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:100 RSP: 0018:ffff8880ba507eb8 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff88cc8000 RCX: 0000000000000020 RDX: 1ffffffff119901d RSI: 00000000000000ec RDI: 0000000000000380 RBP: ffff8880ba5282c0 R08: ffff88823fff7058 R09: ffff88823fff704f R10: ffff88823fff7057 R11: 00000032e767c897 R12: 00000000000000ec R13: 0000000000000003 R14: 000000319778d477 R15: 00002c4dbc5df994 FS: 00007fa81ad57700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f70a4c43718 CR3: 00000000b4a22000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: apic_write arch/x86/include/asm/apic.h:385 [inline] lapic_next_event+0x53/0x80 arch/x86/kernel/apic/apic.c:468 clockevents_program_event+0x1f1/0x2d0 kernel/time/clockevents.c:339 tick_program_event+0x78/0xd0 kernel/time/tick-oneshot.c:47 hrtimer_interrupt+0x336/0x5e0 kernel/time/hrtimer.c:1334 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1079 [inline] smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1104 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:60 RSP: 0018:ffff88804edd76e0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10 RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc900098f4000 RDX: 0000000000040000 RSI: ffffffff818d2ea7 RDI: ffff8880a93aa63c RBP: ffff8880a93aa5c0 R08: 0000000000000000 R09: 0000000000020012 R10: ffff8880b5552cc8 R11: ffff8880b5552440 R12: ffff88808dfb4e00 R13: 000000000000000c R14: ffff88808ef34dd0 R15: ffff8880a237f000 atomic64_add_unless arch/x86/include/asm/atomic64_64.h:206 [inline] atomic_long_add_unless include/asm-generic/atomic-long.h:241 [inline] __fget_files_rcu fs/file.c:712 [inline] __fget+0x1c5/0x3e0 fs/file.c:744 __fget_light fs/file.c:794 [inline] __fdget+0x185/0x1f0 fs/file.c:802 fdget include/linux/file.h:59 [inline] do_select+0x9de/0x1290 fs/select.c:505 core_sys_select+0x32f/0x6a0 fs/select.c:656 do_pselect fs/select.c:733 [inline] SYSC_pselect6 fs/select.c:774 [inline] SyS_pselect6+0x358/0x3c0 fs/select.c:759 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fa81c3e2049 RSP: 002b:00007fa81ad57168 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 00007fa81c4f4f60 RCX: 00007fa81c3e2049 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000040 RBP: 00007fa81c43c08d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf3de91ff R14: 00007fa81ad57300 R15: 0000000000022000 Code: 83 3d dc fc 0b 0a 01 7f 02 5d c3 89 ef 5d e9 d2 13 df 05 48 c7 c7 c0 83 2e 8b e8 c4 6b 5c 00 eb df 66 90 89 ff 89 b7 00 c0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb ---------------- Code disassembly (best guess): 0: fa cli 1: 48 c7 c0 88 97 f0 88 mov $0xffffffff88f09788,%rax 8: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx f: fc ff df 12: 48 c1 e8 03 shr $0x3,%rax 16: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 1a: 75 2f jne 0x4b 1c: 48 83 3d cc 5e cc 01 cmpq $0x0,0x1cc5ecc(%rip) # 0x1cc5ef0 23: 00 24: 74 15 je 0x3b 26: 48 89 df mov %rbx,%rdi 29: 57 push %rdi 2a: 9d popfq * 2b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 30: eb b2 jmp 0xffffffe4 32: e8 25 e3 db f9 callq 0xf9dbe35c 37: eb c0 jmp 0xfffffff9 39: 0f 0b ud2 3b: 0f 0b ud2 3d: 48 rex.W 3e: c7 .byte 0xc7 3f: c7 .byte 0xc7