./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor955670803 <...> [ 102.476459][ T1608] cfg80211: failed to load regulatory.db [ 105.407841][ T27] audit: type=1400 audit(1696710224.858:83): avc: denied { append } for pid=4463 comm="syslogd" name="messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 105.435206][ T27] audit: type=1400 audit(1696710224.858:84): avc: denied { open } for pid=4463 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 105.457857][ T27] audit: type=1400 audit(1696710224.858:85): avc: denied { getattr } for pid=4463 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 Warning: Permanently added '10.128.1.17' (ED25519) to the list of known hosts. [ 105.951411][ T27] audit: type=1400 audit(1696710225.398:86): avc: denied { write } for pid=5032 comm="sh" path="pipe:[4437]" dev="pipefs" ino=4437 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 execve("./syz-executor955670803", ["./syz-executor955670803"], 0x7fffc14048d0 /* 10 vars */) = 0 brk(NULL) = 0x555555a5f000 brk(0x555555a5fd00) = 0x555555a5fd00 arch_prctl(ARCH_SET_FS, 0x555555a5f380) = 0 set_tid_address(0x555555a5f650) = 5035 set_robust_list(0x555555a5f660, 24) = 0 rseq(0x555555a5fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor955670803", 4096) = 27 getrandom("\x0f\x1a\xa9\xfa\xdf\xb1\x2f\x5d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555a5fd00 brk(0x555555a80d00) = 0x555555a80d00 brk(0x555555a81000) = 0x555555a81000 mprotect(0x7fe92663d000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555a5f650) = 5036 ./strace-static-x86_64: Process 5036 attached [pid 5036] set_robust_list(0x555555a5f660, 24) = 0 [pid 5036] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5036] setsid() = 1 [pid 5036] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5036] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5036] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5036] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5036] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5036] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5036] unshare(CLONE_NEWNS) = 0 [pid 5036] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5036] unshare(CLONE_NEWIPC) = 0 [pid 5036] unshare(CLONE_NEWCGROUP) = 0 [pid 5036] unshare(CLONE_NEWUTS) = 0 [pid 5036] unshare(CLONE_SYSVSEM) = 0 [pid 5036] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "16777216", 8) = 8 [pid 5036] close(3) = 0 [pid 5036] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "536870912", 9) = 9 [pid 5036] close(3) = 0 [pid 5036] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1024", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [ 106.094263][ T27] audit: type=1400 audit(1696710225.548:87): avc: denied { execmem } for pid=5035 comm="syz-executor955" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 106.116109][ T27] audit: type=1400 audit(1696710225.548:88): avc: denied { mounton } for pid=5036 comm="syz-executor955" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [pid 5036] write(3, "8192", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1024", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1024", 4) = 4 [pid 5036] close(3) = 0 [pid 5036] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5036] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5036] close(3) = 0 [pid 5036] getpid() = 1 [pid 5036] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5044] set_robust_list(0x555555a5f660, 24) = 0 [pid 5044] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5036] <... clone resumed>, child_tidptr=0x555555a5f650) = 2 [pid 5044] <... prctl resumed>) = 0 [pid 5044] setpgid(0, 0) = 0 [pid 5044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5044] write(3, "1000", 4) = 4 [pid 5044] close(3) = 0 [pid 5044] socket(AF_PACKET, SOCK_RAW, htons(0 /* ETH_P_??? */)) = 3 [pid 5044] ioctl(3, SIOCGIFINDEX, {ifr_name="team0", ifr_ifindex=15}) = 0 [pid 5044] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5044] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\xa4\x00\x00\x00\x24\x00\x0b\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x12\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x0b\x00\x01\x00\x74\x61\x70\x72\x69\x6f\x00\x00\x74\x00\x02\x00\x56\x00\x01\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=164}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 164 [pid 5044] clock_adjtime(CLOCK_REALTIME, [pid 5036] kill(-2, SIGKILL) = 0 [pid 5036] kill(2, SIGKILL) = 0 [ 163.273112][ T7] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2636 jiffies s: 581 root: 0x2/. [ 163.293080][ T7] rcu: blocking rcu_node structures (internal RCU debug): [ 163.300251][ T7] Sending NMI from CPU 0 to CPUs 1: [ 163.305528][ C1] NMI backtrace for cpu 1 [ 163.305541][ C1] CPU: 1 PID: 5044 Comm: syz-executor955 Not tainted 6.6.0-rc4-syzkaller-00229-g82714078aee4 #0 [ 163.305568][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 163.305582][ C1] RIP: 0010:__rcu_read_unlock+0x0/0x570 [ 163.305628][ C1] Code: 24 10 e9 85 f8 ff ff 48 8b 7c 24 28 e8 89 25 6b 00 e9 5b fa ff ff 48 8b 7c 24 30 e8 da 24 6b 00 e9 2b fa ff ff 0f 1f 44 00 00 0f 1e fa 41 56 41 55 41 54 55 65 48 8b 2c 25 00 bd 03 00 53 48 [ 163.305652][ C1] RSP: 0018:ffffc900003f8d88 EFLAGS: 00000046 [ 163.305671][ C1] RAX: 0000000080010001 RBX: 0000000000000001 RCX: 0000000000000000 [ 163.305686][ C1] RDX: ffff888028a6a0c0 RSI: ffffffff8864df71 RDI: 0000000000000001 [ 163.305702][ C1] RBP: ffff88807cd21410 R08: 0000000000000001 R09: 0000000000000000 [ 163.305717][ C1] R10: 0000000000000001 R11: dffffc0000000000 R12: 0000000000000002 [ 163.305732][ C1] R13: ffff88807cd21400 R14: ffff88807680b340 R15: ffff88807cd21000 [ 163.305748][ C1] FS: 0000555555a5f380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 163.305773][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 163.305789][ C1] CR2: 0000000020000600 CR3: 0000000027216000 CR4: 00000000003506e0 [ 163.305805][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 163.305820][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 163.305835][ C1] Call Trace: [ 163.305842][ C1] [ 163.305850][ C1] ? show_regs+0x8f/0xa0 [ 163.305879][ C1] ? nmi_cpu_backtrace+0x1d4/0x380 [ 163.305908][ C1] ? nmi_cpu_backtrace_handler+0xc/0x10 [ 163.305944][ C1] ? nmi_handle+0x1a6/0x570 [ 163.305973][ C1] ? rcu_preempt_deferred_qs_irqrestore+0xdb0/0xdb0 [ 163.306005][ C1] ? default_do_nmi+0x69/0x160 [ 163.306036][ C1] ? exc_nmi+0x171/0x1e0 [ 163.306065][ C1] ? end_repeat_nmi+0x16/0x31 [ 163.306100][ C1] ? advance_sched+0x6c1/0xc60 [ 163.306139][ C1] ? rcu_preempt_deferred_qs_irqrestore+0xdb0/0xdb0 [ 163.306170][ C1] ? rcu_preempt_deferred_qs_irqrestore+0xdb0/0xdb0 [ 163.306201][ C1] ? rcu_preempt_deferred_qs_irqrestore+0xdb0/0xdb0 [ 163.306232][ C1] [ 163.306239][ C1] [ 163.306245][ C1] advance_sched+0x6c6/0xc60 [ 163.306289][ C1] ? taprio_dequeue+0x5e0/0x5e0 [ 163.306327][ C1] __hrtimer_run_queues+0x203/0xc10 [ 163.306364][ C1] ? enqueue_hrtimer+0x310/0x310 [ 163.306394][ C1] ? ktime_get_update_offsets_now+0x3bc/0x610 [ 163.306436][ C1] hrtimer_interrupt+0x31b/0x800 [ 163.306472][ C1] __sysvec_apic_timer_interrupt+0x105/0x3f0 [ 163.306511][ C1] sysvec_apic_timer_interrupt+0x8e/0xc0 [ 163.306548][ C1] [ 163.306554][ C1] [ 163.306561][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 163.306596][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 [ 163.306623][ C1] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 56 e5 24 f7 48 89 df e8 4e 64 25 f7 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 55 ce 16 f7 65 8b 05 66 22 c1 75 85 c0 74 12 5b [ 163.306646][ C1] RSP: 0018:ffffc9000350fa78 EFLAGS: 00000246 [ 163.306664][ C1] RAX: 0000000000000002 RBX: ffff8880b982b940 RCX: 1ffffffff233c916 [ 163.306680][ C1] RDX: 0000000000000000 RSI: ffffffff8a8c9ba0 RDI: ffffffff8ae90b60 [ 163.306696][ C1] RBP: 0000000000000282 R08: 0000000000000001 R09: fffffbfff233c7d0 [ 163.306711][ C1] R10: ffffffff919e3e87 R11: 0000000000000002 R12: 0000000000000004 [ 163.306726][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 163.306748][ C1] clock_was_set+0x592/0x850 [ 163.306781][ C1] ? hrtimer_fixup_init+0x80/0x80 [ 163.306814][ C1] ? _raw_spin_unlock_irqrestore+0x4e/0x70 [ 163.306840][ C1] timekeeping_inject_offset+0x4d1/0x640 [ 163.306878][ C1] ? change_clocksource+0x2d0/0x2d0 [ 163.306913][ C1] ? security_capable+0x92/0xc0 [ 163.306952][ C1] do_adjtimex+0x373/0xaa0 [ 163.306989][ C1] ? ktime_get_update_offsets_now+0x610/0x610 [ 163.307035][ C1] ? posix_get_monotonic_timespec+0x270/0x270 [ 163.307064][ C1] __do_sys_clock_adjtime+0x173/0x280 [ 163.307093][ C1] ? posix_timer_fn+0x3d0/0x3d0 [ 163.307120][ C1] ? find_held_lock+0x2d/0x110 [ 163.307153][ C1] ? _raw_spin_unlock_irq+0x23/0x50 [ 163.307177][ C1] ? lockdep_hardirqs_on+0x7d/0x100 [ 163.307212][ C1] ? _raw_spin_unlock_irq+0x2e/0x50 [ 163.307235][ C1] ? ptrace_notify+0xf4/0x130 [ 163.307259][ C1] do_syscall_64+0x38/0xb0 [ 163.307286][ C1] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 163.307318][ C1] RIP: 0033:0x7fe9265c4ee9 [ 163.307336][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 163.307359][ C1] RSP: 002b:00007ffff514af48 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 [ 163.307380][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe9265c4ee9 [ 163.307396][ C1] RDX: 00007fe9265c4ee9 RSI: 0000000020000280 RDI: 0000000000000000 [ 163.307411][ C1] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 163.307427][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffff514afa0 [ 163.307442][ C1] R13: 0000000000000001 R14: 00007ffff514afa0 R15: 0000000000000003 [ 163.307461][ C1] [ 163.307469][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.940 msecs