./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3641680710 <...> Warning: Permanently added '10.128.0.236' (ED25519) to the list of known hosts. execve("./syz-executor3641680710", ["./syz-executor3641680710"], 0x7fff0d13be10 /* 10 vars */) = 0 brk(NULL) = 0x555577cf9000 brk(0x555577cf9d00) = 0x555577cf9d00 arch_prctl(ARCH_SET_FS, 0x555577cf9380) = 0 set_tid_address(0x555577cf9650) = 5077 set_robust_list(0x555577cf9660, 24) = 0 rseq(0x555577cf9ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3641680710", 4096) = 28 getrandom("\x4a\xb3\xfb\x9a\x34\x09\x2e\x30", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555577cf9d00 brk(0x555577d1ad00) = 0x555577d1ad00 brk(0x555577d1b000) = 0x555577d1b000 mprotect(0x7f587ceae000, 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=0x555577cf9650) = 5078 ./strace-static-x86_64: Process 5078 attached [pid 5078] set_robust_list(0x555577cf9660, 24) = 0 [ 110.583197][ T28] audit: type=1400 audit(1713803270.932:87): avc: denied { execmem } for pid=5077 comm="syz-executor364" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 5078] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] setsid() = 1 [pid 5078] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5078] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5078] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5078] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5078] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5078] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5078] unshare(CLONE_NEWNS) = 0 [pid 5078] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [ 110.636551][ T28] audit: type=1400 audit(1713803270.982:88): avc: denied { mounton } for pid=5078 comm="syz-executor364" 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 [ 110.660781][ T28] audit: type=1400 audit(1713803270.982:89): avc: denied { mount } for pid=5078 comm="syz-executor364" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 5078] unshare(CLONE_NEWIPC) = 0 [pid 5078] unshare(CLONE_NEWCGROUP) = 0 [pid 5078] unshare(CLONE_NEWUTS) = 0 [pid 5078] unshare(CLONE_SYSVSEM) = 0 [ 110.713027][ T28] audit: type=1400 audit(1713803271.062:90): avc: denied { mounton } for pid=5078 comm="syz-executor364" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [pid 5078] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "16777216", 8) = 8 [pid 5078] close(3) = 0 [pid 5078] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "536870912", 9) = 9 [pid 5078] close(3) = 0 [pid 5078] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1024", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "8192", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1024", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1024", 4) = 4 [pid 5078] close(3) = 0 [pid 5078] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5078] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5078] close(3) = 0 [pid 5078] getpid() = 1 [pid 5078] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5086] +++ killed by SIGKILL +++ [pid 5078] <... kill resumed>) = 0 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=2, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5087 attached [pid 5087] set_robust_list(0x555577cf9660, 24 [pid 5078] <... clone resumed>, child_tidptr=0x555577cf9650) = 3 [pid 5087] <... set_robust_list resumed>) = 0 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5087] setpgid(0, 0) = 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5087] write(3, "1000", 4) = 4 [pid 5087] close(3) = 0 [pid 5087] socket(AF_PACKET, SOCK_RAW, htons(0 /* ETH_P_??? */)) = 3 [pid 5087] ioctl(3, SIOCGIFINDEX, {ifr_name="team0", ifr_ifindex=15}) = 0 [pid 5087] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5087] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\xac\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\x7c\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=172}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 172 [pid 5087] close(3 [pid 5078] kill(-3, SIGKILL) = 0 [pid 5078] kill(3, SIGKILL) = 0 [pid 5078] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5078] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(3, 0x555577cfa6f0 /* 2 entries */, 32768) = 48 [pid 5078] getdents64(3, 0x555577cfa6f0 /* 0 entries */, 32768) = 0 [pid 5078] close(3) = 0 [ 247.290366][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 247.297437][ C1] rcu: 0-...!: (2 ticks this GP) idle=9494/0/0x1 softirq=8378/8378 fqs=0 [ 247.306900][ C1] rcu: (detected by 1, t=10502 jiffies, g=12333, q=210 ncpus=2) [ 247.314680][ C1] Sending NMI from CPU 1 to CPUs 0: [ 247.319974][ C0] NMI backtrace for cpu 0 [ 247.319991][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc5-syzkaller #0 [ 247.320021][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 247.320037][ C0] RIP: 0010:advance_sched+0x139/0xc60 [ 247.320111][ C0] Code: 80 3c 02 00 0f 85 84 0a 00 00 49 8b 46 e8 48 89 04 24 e8 ea f1 ec 01 31 ff 89 c3 89 c6 e8 ef 92 9f f8 85 db 0f 85 44 06 00 00 02 98 9f f8 49 8d 46 f0 48 89 c2 48 89 44 24 50 48 b8 00 00 00 [ 247.320139][ C0] RSP: 0018:ffffc90000007d80 EFLAGS: 00000002 [ 247.320163][ C0] RAX: 0000000000010002 RBX: 0000000000000001 RCX: ffffffff88ee30ab [ 247.320182][ C0] RDX: ffffffff8d495740 RSI: 0000000000000000 RDI: 0000000000000005 [ 247.320201][ C0] RBP: 000000000003d78c R08: 0000000000000005 R09: 0000000000000000 [ 247.320219][ C0] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b942cac0 [ 247.320238][ C0] R13: ffff8880757e9340 R14: ffff8880757e9340 R15: ffffffff88ee2910 [ 247.320258][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 247.320287][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 247.320307][ C0] CR2: 00007f587ce12fb0 CR3: 000000007c5b6000 CR4: 00000000003506f0 [ 247.320326][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 247.320343][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 247.320361][ C0] Call Trace: [ 247.320372][ C0] [ 247.320383][ C0] ? show_regs+0x8c/0xa0 [ 247.320410][ C0] ? nmi_cpu_backtrace+0x1d8/0x390 [ 247.320444][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 247.320486][ C0] ? nmi_handle+0x1a9/0x5c0 [ 247.320514][ C0] ? advance_sched+0x139/0xc60 [ 247.320554][ C0] ? default_do_nmi+0x6a/0x160 [ 247.320596][ C0] ? exc_nmi+0x170/0x1e0 [ 247.320628][ C0] ? end_repeat_nmi+0xf/0x53 [ 247.320658][ C0] ? __pfx_advance_sched+0x10/0x10 [ 247.320701][ C0] ? advance_sched+0x79b/0xc60 [ 247.320741][ C0] ? advance_sched+0x139/0xc60 [ 247.320781][ C0] ? advance_sched+0x139/0xc60 [ 247.320821][ C0] ? advance_sched+0x139/0xc60 [ 247.320860][ C0] [ 247.320869][ C0] [ 247.320879][ C0] ? timerqueue_del+0x83/0x150 [ 247.320906][ C0] ? do_raw_spin_unlock+0x172/0x230 [ 247.320950][ C0] ? __pfx_advance_sched+0x10/0x10 [ 247.320990][ C0] __hrtimer_run_queues+0x20c/0xcc0 [ 247.321026][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 247.321060][ C0] ? ktime_get_update_offsets_now+0x3bd/0x620 [ 247.321107][ C0] hrtimer_interrupt+0x31b/0x800 [ 247.321145][ C0] __sysvec_apic_timer_interrupt+0x10f/0x450 [ 247.321178][ C0] sysvec_apic_timer_interrupt+0x90/0xb0 [ 247.321222][ C0] [ 247.321230][ C0] [ 247.321239][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 247.321272][ C0] RIP: 0010:acpi_safe_halt+0x1a/0x20 [ 247.321306][ C0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 18 91 28 75 48 8b 00 a8 08 75 0c 66 90 0f 00 2d e8 87 9f 00 fb f4 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 247.321333][ C0] RSP: 0018:ffffffff8d407d70 EFLAGS: 00000246 [ 247.321356][ C0] RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8adb2989 [ 247.321375][ C0] RDX: 0000000000000001 RSI: ffff888019ebb000 RDI: ffff888019ebb064 [ 247.321394][ C0] RBP: ffff888019ebb064 R08: 0000000000000001 R09: ffffed1017286fdd [ 247.321413][ C0] R10: ffff8880b9437eeb R11: 0000000000000000 R12: ffff88801af8d800 [ 247.321433][ C0] R13: ffffffff8e338940 R14: 0000000000000000 R15: 0000000000000000 [ 247.321454][ C0] ? ct_kernel_exit+0x139/0x190 [ 247.321483][ C0] acpi_idle_enter+0xc5/0x160 [ 247.321516][ C0] cpuidle_enter_state+0x85/0x500 [ 247.321547][ C0] ? __pfx_tsc_verify_tsc_adjust+0x10/0x10 [ 247.321593][ C0] cpuidle_enter+0x4e/0xa0 [ 247.321621][ C0] do_idle+0x313/0x3f0 [ 247.321652][ C0] ? __pfx_do_idle+0x10/0x10 [ 247.321682][ C0] cpu_startup_entry+0x4f/0x60 [ 247.321713][ C0] rest_init+0x16b/0x2b0 [ 247.321744][ C0] ? acpi_subsystem_init+0x133/0x180 [ 247.321773][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 247.321802][ C0] start_kernel+0x3a3/0x490 [ 247.321831][ C0] x86_64_start_reservations+0x18/0x30 [ 247.321881][ C0] x86_64_start_kernel+0xb2/0xc0 [ 247.321936][ C0] common_startup_64+0x13e/0x148 [ 247.321973][ C0] [ 247.321984][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.011 msecs [ 247.322968][ C1] rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g12333 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 247.760100][ C1] rcu: Possible timer handling issue on cpu=0 timer-softirq=3691 [ 247.768057][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g12333 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 247.779496][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 247.789546][ C1] rcu: RCU grace-period kthread stack dump: [ 247.795481][ C1] task:rcu_preempt state:I stack:28736 pid:16 tgid:16 ppid:2 flags:0x00004000 [ 247.805733][ C1] Call Trace: [ 247.809066][ C1] [ 247.812055][ C1] __schedule+0xf15/0x5d00 [ 247.816559][ C1] ? __pfx___lock_acquire+0x10/0x10 [ 247.821862][ C1] ? __pfx___schedule+0x10/0x10 [ 247.826791][ C1] ? schedule+0x298/0x350 [ 247.831177][ C1] ? __pfx_lock_release+0x10/0x10 [ 247.836263][ C1] ? __pfx___mod_timer+0x10/0x10 [ 247.841263][ C1] ? lock_acquire+0x1b1/0x560 [ 247.845995][ C1] ? lockdep_init_map_type+0x16d/0x7d0 [ 247.851515][ C1] schedule+0xe7/0x350 [ 247.855686][ C1] schedule_timeout+0x136/0x2a0 [ 247.860641][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 247.866085][ C1] ? __pfx_process_timeout+0x10/0x10 [ 247.871451][ C1] ? _raw_spin_unlock_irqrestore+0x3b/0x80 [ 247.877428][ C1] ? prepare_to_swait_event+0xf0/0x470 [ 247.882980][ C1] rcu_gp_fqs_loop+0x1eb/0xb00 [ 247.887836][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 247.893210][ C1] ? __pfx_lock_release+0x10/0x10 [ 247.898320][ C1] rcu_gp_kthread+0x271/0x380 [ 247.903094][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 247.908384][ C1] ? lockdep_hardirqs_on+0x7c/0x110 [ 247.913672][ C1] ? __kthread_parkme+0x148/0x220 [ 247.918792][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 247.924066][ C1] kthread+0x2c1/0x3a0 [ 247.928217][ C1] ? _raw_spin_unlock_irq+0x23/0x50 [ 247.933496][ C1] ? __pfx_kthread+0x10/0x10 [ 247.938183][ C1] ret_from_fork+0x45/0x80 [ 247.942669][ C1] ? __pfx_kthread+0x10/0x10 [ 247.947350][ C1] ret_from_fork_asm+0x1a/0x30 [ 247.952206][ C1]