./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2897944853 <...> Warning: Permanently added '10.128.0.240' (ED25519) to the list of known hosts. execve("./syz-executor2897944853", ["./syz-executor2897944853"], 0x7ffd938eef70 /* 10 vars */) = 0 brk(NULL) = 0x555556850000 brk(0x555556850d00) = 0x555556850d00 arch_prctl(ARCH_SET_FS, 0x555556850380) = 0 set_tid_address(0x555556850650) = 288 set_robust_list(0x555556850660, 24) = 0 rseq(0x555556850ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2897944853", 4096) = 28 getrandom("\x92\xd3\x6f\x06\x74\x7e\x4d\xd0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556850d00 brk(0x555556871d00) = 0x555556871d00 brk(0x555556872000) = 0x555556872000 mprotect(0x7fd799880000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556850650) = 289 ./strace-static-x86_64: Process 289 attached [pid 288] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 289] set_robust_list(0x555556850660, 24) = 0 ./strace-static-x86_64: Process 290 attached [pid 288] <... clone resumed>, child_tidptr=0x555556850650) = 290 [pid 289] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 288] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 289] <... clone resumed>, child_tidptr=0x555556850650) = 291 [pid 290] set_robust_list(0x555556850660, 24) = 0 [pid 288] <... clone resumed>, child_tidptr=0x555556850650) = 292 ./strace-static-x86_64: Process 292 attached [pid 290] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 288] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 290] <... clone resumed>, child_tidptr=0x555556850650) = 293 ./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x555556850660, 24) = 0 [pid 291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 291] setpgid(0, 0) = 0 [pid 291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 288] <... clone resumed>, child_tidptr=0x555556850650) = 294 [pid 288] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 292] set_robust_list(0x555556850660, 24 [pid 291] <... openat resumed>) = 3 [pid 291] write(3, "1000", 4) = 4 [pid 291] close(3) = 0 [pid 291] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY [pid 288] <... clone resumed>, child_tidptr=0x555556850650) = 295 [pid 292] <... set_robust_list resumed>) = 0 [pid 291] <... openat resumed>) = 3 [pid 291] ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000100) = 0 [pid 292] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 294 attached [pid 291] ioctl(3, SNDRV_TIMER_IOCTL_PARAMS, 0x20000140) = 0 [pid 291] ioctl(3, SNDRV_TIMER_IOCTL_START, 0) = 0 [pid 291] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 4 [pid 291] ioctl(4, SNDRV_TIMER_IOCTL_SELECT, 0x20000100) = 0 [pid 291] ioctl(4, SNDRV_TIMER_IOCTL_START, 0) = 0 [pid 291] exit_group(0) = ? [pid 292] <... clone resumed>, child_tidptr=0x555556850650) = 296 [pid 294] set_robust_list(0x555556850660, 24) = 0 ./strace-static-x86_64: Process 293 attached [pid 291] +++ exited with 0 +++ [pid 289] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=291, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 289] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x555556850660, 24 [pid 289] <... restart_syscall resumed>) = 0 [pid 289] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 296 attached [pid 295] <... set_robust_list resumed>) = 0 [pid 294] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 293] set_robust_list(0x555556850660, 24./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x555556850660, 24 [pid 296] set_robust_list(0x555556850660, 24 [pid 295] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 293] <... set_robust_list resumed>) = 0 [pid 289] <... clone resumed>, child_tidptr=0x555556850650) = 297 ./strace-static-x86_64: Process 298 attached [pid 294] <... clone resumed>, child_tidptr=0x555556850650) = 298 [pid 298] set_robust_list(0x555556850660, 24 [pid 293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 293] setpgid(0, 0) = 0 [pid 293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 298] <... set_robust_list resumed>) = 0 [pid 297] <... set_robust_list resumed>) = 0 [pid 293] <... openat resumed>) = 3 [pid 293] write(3, "1000", 4) = 4 [pid 293] close(3) = 0 [pid 297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 296] <... set_robust_list resumed>) = 0 [pid 293] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 3 [pid 293] ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000100) = 0 [pid 293] ioctl(3, SNDRV_TIMER_IOCTL_PARAMS, 0x20000140) = 0 [pid 293] ioctl(3, SNDRV_TIMER_IOCTL_START, 0) = 0 [pid 293] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 4 [pid 293] ioctl(4, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 297] <... prctl resumed>) = 0 [pid 296] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 298] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 293] <... ioctl resumed>) = 0 [pid 293] ioctl(4, SNDRV_TIMER_IOCTL_START, 0) = 0 [pid 293] exit_group(0) = ? [pid 297] setpgid(0, 0 [pid 296] <... prctl resumed>) = 0 [pid 296] setpgid(0, 0 [pid 297] <... setpgid resumed>) = 0 [pid 298] <... prctl resumed>) = 0 [pid 297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 296] <... setpgid resumed>) = 0 [pid 298] setpgid(0, 0 [pid 296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 293] +++ exited with 0 +++ [pid 298] <... setpgid resumed>) = 0 [pid 290] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=293, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 290] restart_syscall(<... resuming interrupted clone ...> [pid 297] <... openat resumed>) = 3 [pid 290] <... restart_syscall resumed>) = 0 [pid 290] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 299 attached ./strace-static-x86_64: Process 300 attached [pid 298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 297] write(3, "1000", 4 [pid 296] <... openat resumed>) = 3 [pid 295] <... clone resumed>, child_tidptr=0x555556850650) = 299 [pid 290] <... clone resumed>, child_tidptr=0x555556850650) = 300 [pid 300] set_robust_list(0x555556850660, 24) = 0 [pid 300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 300] setpgid(0, 0) = 0 [pid 300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 298] <... openat resumed>) = 3 [pid 298] write(3, "1000", 4 [pid 297] <... write resumed>) = 4 [pid 296] write(3, "1000", 4 [pid 300] write(3, "1000", 4) = 4 [pid 296] <... write resumed>) = 4 [pid 297] close(3 [pid 298] <... write resumed>) = 4 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 3 [pid 298] close(3 [pid 297] <... close resumed>) = 0 [pid 296] close(3 [pid 300] ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000100) = 0 [pid 300] ioctl(3, SNDRV_TIMER_IOCTL_PARAMS, 0x20000140) = 0 [pid 300] ioctl(3, SNDRV_TIMER_IOCTL_START, 0) = 0 [pid 300] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 4 [pid 296] <... close resumed>) = 0 [pid 297] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY [pid 298] <... close resumed>) = 0 [pid 296] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY [pid 300] ioctl(4, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 296] <... openat resumed>) = 3 [pid 300] <... ioctl resumed>) = 0 [pid 297] <... openat resumed>) = 3 [pid 300] ioctl(4, SNDRV_TIMER_IOCTL_START, 0) = 0 [pid 300] exit_group(0 [pid 298] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY [pid 297] ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 296] ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 298] <... openat resumed>) = 3 [pid 297] <... ioctl resumed>) = 0 [pid 296] <... ioctl resumed>) = 0 [pid 298] ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 297] ioctl(3, SNDRV_TIMER_IOCTL_PARAMS, 0x20000140 [pid 296] ioctl(3, SNDRV_TIMER_IOCTL_PARAMS, 0x20000140 [pid 298] <... ioctl resumed>) = 0 [pid 298] ioctl(3, SNDRV_TIMER_IOCTL_PARAMS, 0x20000140 [pid 297] <... ioctl resumed>) = 0 [pid 296] <... ioctl resumed>) = 0 [pid 298] <... ioctl resumed>) = 0 [pid 297] ioctl(3, SNDRV_TIMER_IOCTL_START, 0 [pid 296] ioctl(3, SNDRV_TIMER_IOCTL_START, 0 [pid 298] ioctl(3, SNDRV_TIMER_IOCTL_START, 0 [pid 297] <... ioctl resumed>) = 0 [pid 296] <... ioctl resumed>) = 0 [pid 298] <... ioctl resumed>) = 0 [pid 296] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY [pid 297] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY [pid 298] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY [pid 296] <... openat resumed>) = 4 [pid 297] <... openat resumed>) = 4 [pid 298] <... openat resumed>) = 4 [pid 297] ioctl(4, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 296] ioctl(4, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 298] ioctl(4, SNDRV_TIMER_IOCTL_SELECT, 0x20000100 [pid 297] <... ioctl resumed>) = 0 [pid 298] <... ioctl resumed>) = 0 [pid 297] ioctl(4, SNDRV_TIMER_IOCTL_START, 0 [pid 296] <... ioctl resumed>) = 0 [pid 298] ioctl(4, SNDRV_TIMER_IOCTL_START, 0 [pid 297] <... ioctl resumed>) = 0 [pid 296] ioctl(4, SNDRV_TIMER_IOCTL_START, 0 [pid 298] <... ioctl resumed>) = 0 [pid 300] <... exit_group resumed>) = ? [pid 297] exit_group(0 [pid 296] <... ioctl resumed>) = 0 [pid 298] exit_group(0) = ? [pid 297] <... exit_group resumed>) = ? [pid 296] exit_group(0 [pid 299] set_robust_list(0x555556850660, 24 [pid 298] +++ exited with 0 +++ [pid 296] <... exit_group resumed>) = ? [pid 299] <... set_robust_list resumed>) = 0 [ 22.876065][ T24] audit: type=1400 audit(1713056173.990:66): avc: denied { execmem } for pid=288 comm="syz-executor289" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 294] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=298, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 299] setpgid(0, 0 [pid 294] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 299] <... setpgid resumed>) = 0 [pid 299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 294] <... clone resumed>, child_tidptr=0x555556850650) = 301 [pid 299] <... openat resumed>) = 3 [pid 299] write(3, "1000", 4) = 4 [pid 299] close(3) = 0 [pid 299] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 3 [pid 299] ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000100./strace-static-x86_64: Process 301 attached [pid 301] set_robust_list(0x555556850660, 24) = 0 [pid 301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 301] setpgid(0, 0) = 0 [pid 301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 301] write(3, "1000", 4) = 4 [pid 301] close(3) = 0 [pid 301] openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 3 [ 122.926319][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 122.933108][ C0] rcu: 1-...!: (1 ticks this GP) idle=5c2/1/0x4000000000000000 softirq=1371/1371 fqs=0 last_accelerate: 9375/ba8b dyntick_enabled: 1 [ 122.946628][ C0] (detected by 0, t=10002 jiffies, g=141, q=46) [ 122.952787][ C0] Sending NMI from CPU 0 to CPUs 1: [ 122.958826][ C0] NMI backtrace for cpu 1 [ 122.958833][ C0] CPU: 1 PID: 300 Comm: syz-executor289 Not tainted 5.10.209-syzkaller-00002-g4e1bc8d8e8ae #0 [ 122.958841][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 122.958845][ C0] RIP: 0010:_raw_spin_lock_irqsave+0x96/0x210 [ 122.958858][ C0] Code: 3e 43 c7 44 3e 08 f3 f3 f3 f3 4c 89 e3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 e7 e8 44 0e f7 fc 48 c7 44 24 50 00 00 00 00 9c <8f> 44 24 50 42 80 3c 3b 00 74 08 4c 89 e7 e8 87 0d f7 fc 48 8b 44 [ 122.958863][ C0] RSP: 0018:ffffc90000170958 EFLAGS: 00000046 [ 122.958872][ C0] RAX: f300f204f1f1f1f1 RBX: 1ffff9200002e136 RCX: dffffc0000000000 [ 122.958878][ C0] RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffff88811d12b870 [ 122.958889][ C0] RBP: ffffc90000170a30 R08: dffffc0000000000 R09: ffffc90000170a80 [ 122.958895][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900001709b0 [ 122.958900][ C0] R13: ffff88811d12b870 R14: 1ffff9200002e130 R15: dffffc0000000000 [ 122.958906][ C0] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 122.958911][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 122.958917][ C0] CR2: 00007fd799887130 CR3: 000000011d603000 CR4: 00000000003506a0 [ 122.958922][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 122.958928][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 122.958931][ C0] Call Trace: [ 122.958934][ C0] [ 122.958937][ C0] ? show_regs+0x58/0x60 [ 122.958941][ C0] ? nmi_cpu_backtrace+0x133/0x160 [ 122.958945][ C0] ? _raw_spin_lock_irqsave+0x96/0x210 [ 122.958950][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 122.958953][ C0] ? nmi_handle+0xa8/0x280 [ 122.958957][ C0] ? _raw_spin_lock_irqsave+0x96/0x210 [ 122.958961][ C0] ? default_do_nmi+0x69/0x160 [ 122.958965][ C0] ? exc_nmi+0xaf/0x120 [ 122.958968][ C0] ? end_repeat_nmi+0x16/0x31 [ 122.958973][ C0] ? _raw_spin_lock_irqsave+0x96/0x210 [ 122.958977][ C0] ? _raw_spin_lock_irqsave+0x96/0x210 [ 122.958981][ C0] ? _raw_spin_lock_irqsave+0x96/0x210 [ 122.958984][ C0] [ 122.958986][ C0] [ 122.958990][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 122.958994][ C0] __wake_up+0xf5/0x1c0 [ 122.958998][ C0] ? __kasan_check_read+0x11/0x20 [ 122.959002][ C0] ? remove_wait_queue+0x140/0x140 [ 122.959006][ C0] ? _raw_spin_trylock_bh+0x190/0x190 [ 122.959010][ C0] ? __kasan_check_write+0x14/0x20 [ 122.959013][ C0] ? snd_kill_fasync+0x152/0x2a0 [ 122.959018][ C0] snd_timer_user_interrupt+0x2e5/0x470 [ 122.959022][ C0] ? snd_timer_user_tinterrupt+0xc90/0xc90 [ 122.959026][ C0] snd_timer_process_callbacks+0x24b/0x310 [ 122.959030][ C0] snd_timer_interrupt+0xe94/0x1050 [ 122.959034][ C0] snd_hrtimer_callback+0x1db/0x330 [ 122.959038][ C0] ? snd_hrtimer_stop+0xa0/0xa0 [ 122.959042][ C0] __hrtimer_run_queues+0x3d7/0xa50 [ 122.959046][ C0] ? hrtimer_interrupt+0x8b0/0x8b0 [ 122.959050][ C0] ? clockevents_program_event+0x21b/0x2c0 [ 122.959055][ C0] ? ktime_get_update_offsets_now+0x266/0x280 [ 122.959059][ C0] hrtimer_interrupt+0x39a/0x8b0 [ 122.959063][ C0] __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 122.959067][ C0] asm_call_irq_on_stack+0xf/0x20 [ 122.959070][ C0] [ 122.959074][ C0] sysvec_apic_timer_interrupt+0x85/0xe0 [ 122.959079][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 122.959083][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0x51/0x80 [ 122.959095][ C0] Code: 74 0c 48 c7 c7 b0 76 6c 86 e8 1b 08 f7 fc 48 83 3d 73 5b bb 01 00 74 37 48 89 df e8 fd 85 9f fc 66 90 4c 89 75 e8 ff 75 e8 9d 01 00 00 00 e8 75 f6 97 fc 65 8b 05 2a 52 51 7b 85 c0 74 09 48 [ 122.959100][ C0] RSP: 0018:ffffc90000bc7a60 EFLAGS: 00000246 [ 122.959107][ C0] RAX: 0000000000000001 RBX: ffff88810b246538 RCX: dffffc0000000000 [ 122.959113][ C0] RDX: 0000000000000000 RSI: 0000000000000246 RDI: ffff88810b246538 [ 122.959118][ C0] RBP: ffffc90000bc7a78 R08: ffffffff83a230f7 R09: ffffed1023cf88ce [ 122.959124][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810b2464b0 [ 122.959129][ C0] R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 [ 122.959133][ C0] ? snd_timer_notify1+0x217/0x350 [ 122.959137][ C0] snd_timer_stop1+0x7af/0x8f0 [ 122.959141][ C0] snd_timer_close_locked+0x22e/0x920 [ 122.959145][ C0] snd_timer_user_release+0x121/0x2c0 [ 122.959149][ C0] ? snd_timer_user_open+0x180/0x180 [ 122.959153][ C0] ? snd_timer_user_open+0x180/0x180 [ 122.959157][ C0] __fput+0x309/0x760 [ 122.959160][ C0] ____fput+0x15/0x20 [ 122.959164][ C0] task_work_run+0x129/0x190 [ 122.959167][ C0] do_exit+0xc83/0x2a50 [ 122.959171][ C0] ? put_task_struct+0x80/0x80 [ 122.959175][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 122.959179][ C0] ? ptrace_notify+0x24c/0x350 [ 122.959183][ C0] ? do_notify_parent+0xa10/0xa10 [ 122.959187][ C0] ? debug_smp_processor_id+0x17/0x20 [ 122.959191][ C0] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 122.959195][ C0] do_group_exit+0x141/0x310 [ 122.959199][ C0] __x64_sys_exit_group+0x3f/0x40 [ 122.959202][ C0] do_syscall_64+0x34/0x70 [ 122.959207][ C0] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 122.959210][ C0] RIP: 0033:0x7fd79980bdb9 [ 122.959216][ C0] Code: Unable to access opcode bytes at RIP 0x7fd79980bd8f. [ 122.959220][ C0] RSP: 002b:00007ffed317d268 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 122.959230][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd79980bdb9 [ 122.959236][ C0] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 122.959242][ C0] RBP: 00007fd7998862b0 R08: ffffffffffffffb8 R09: 00000000000000a0 [ 122.959247][ C0] R10: 00000000000000a0 R11: 0000000000000246 R12: 00007fd7998862b0 [ 122.959253][ C0] R13: 0000000000000000 R14: 00007fd799886d20 R15: 00007fd7997dcf50 [ 122.959267][ C0] rcu: rcu_preempt kthread starved for 10002 jiffies! g141 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 123.514786][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 123.524588][ C0] rcu: RCU grace-period kthread stack dump: [ 123.530317][ C0] task:rcu_preempt state:I stack: 0 pid: 13 ppid: 2 flags:0x00004000 [ 123.539349][ C0] Call Trace: [ 123.542483][ C0] __schedule+0xbe6/0x1330 [ 123.546728][ C0] ? __sched_text_start+0x8/0x8 [ 123.551413][ C0] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 123.556709][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 123.561395][ C0] schedule+0x13d/0x1d0 [ 123.565382][ C0] schedule_timeout+0x18c/0x360 [ 123.570073][ C0] ? prepare_to_swait_event+0x39f/0x3e0 [ 123.575455][ C0] ? console_conditional_schedule+0x10/0x10 [ 123.581188][ C0] ? run_local_timers+0x160/0x160 [ 123.586046][ C0] ? __note_gp_changes+0x2d8/0x6f0 [ 123.590991][ C0] rcu_gp_kthread+0xefc/0x23a0 [ 123.595592][ C0] ? dump_blkd_tasks+0x7e0/0x7e0 [ 123.600365][ C0] ? rcu_barrier_callback+0x50/0x50 [ 123.605401][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 123.610091][ C0] ? __kasan_check_read+0x11/0x20 [ 123.614954][ C0] ? __kthread_parkme+0xb9/0x1c0 [ 123.619719][ C0] kthread+0x34b/0x3d0 [ 123.623631][ C0] ? rcu_barrier_callback+0x50/0x50 [ 123.628659][ C0] ? kthread_blkcg+0xd0/0xd0 [ 123.633087][ C0] ret_from_fork+0x1f/0x30 [ 264.895264][ C0] watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [kworker/u4:1:9] [ 264.903246][ C0] Modules linked in: [ 264.906985][ C0] CPU: 0 PID: 9 Comm: kworker/u4:1 Not tainted 5.10.209-syzkaller-00002-g4e1bc8d8e8ae #0 [ 264.916615][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 264.926632][ C0] Workqueue: events_unbound toggle_allocation_gate [ 264.932970][ C0] RIP: 0010:smp_call_function_single+0x278/0x510 [ 264.939106][ C0] Code: 0f 85 18 02 00 00 44 8b 6c 24 48 44 89 ee 83 e6 01 31 ff e8 ba f0 0a 00 41 83 e5 01 75 0a e8 ff ec 0a 00 e9 eb 00 00 00 f3 90 <42> 0f b6 04 23 84 c0 75 15 f7 44 24 48 01 00 00 00 0f 84 cd 00 00 [ 264.959064][ C0] RSP: 0018:ffffc90000097720 EFLAGS: 00000293 [ 264.964967][ C0] RAX: ffffffff815fbb14 RBX: 1ffff92000012eed RCX: ffff888100252780 [ 264.972785][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 264.980597][ C0] RBP: ffffc90000097810 R08: ffffffff815fbae6 R09: ffffed103ee2aec9 [ 264.988405][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 264.996210][ C0] R13: 0000000000000001 R14: ffffc90000097768 R15: 0000000000000000 [ 265.004030][ C0] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 265.012790][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 265.019210][ C0] CR2: 00007fd7998840d0 CR3: 000000000660f000 CR4: 00000000003506b0 [ 265.027022][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 265.034834][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 265.042817][ C0] Call Trace: [ 265.045947][ C0] [ 265.048721][ C0] ? show_regs+0x58/0x60 [ 265.052747][ C0] ? watchdog_timer_fn+0x471/0x590 [ 265.057670][ C0] ? proc_watchdog_cpumask+0xd0/0xd0 [ 265.062808][ C0] ? __hrtimer_run_queues+0x3d7/0xa50 [ 265.067996][ C0] ? hrtimer_interrupt+0x8b0/0x8b0 [ 265.072938][ C0] ? clockevents_program_event+0x214/0x2c0 [ 265.078583][ C0] ? ktime_get_update_offsets_now+0x266/0x280 [ 265.084484][ C0] ? hrtimer_interrupt+0x39a/0x8b0 [ 265.089473][ C0] ? __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 265.095369][ C0] ? asm_call_irq_on_stack+0xf/0x20 [ 265.100358][ C0] [ 265.103161][ C0] ? sysvec_apic_timer_interrupt+0x85/0xe0 [ 265.108784][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 265.114776][ C0] ? smp_call_function_single+0x266/0x510 [ 265.120326][ C0] ? smp_call_function_single+0x294/0x510 [ 265.125883][ C0] ? smp_call_function_single+0x278/0x510 [ 265.131485][ C0] ? text_poke_sync+0x20/0x20 [ 265.135951][ C0] ? flush_smp_call_function_from_idle+0x1b0/0x1b0 [ 265.142316][ C0] ? cpumask_any_but+0x18/0xb0 [ 265.146881][ C0] ? text_poke_sync+0x20/0x20 [ 265.151395][ C0] ? cpumask_any_but+0xa3/0xb0 [ 265.156001][ C0] smp_call_function_many_cond+0x94e/0xa30 [ 265.161654][ C0] ? __kmalloc_track_caller+0xe8/0x320 [ 265.166935][ C0] ? text_poke_sync+0x20/0x20 [ 265.171446][ C0] ? smp_call_function_many+0x40/0x40 [ 265.176655][ C0] ? text_poke+0x20/0x20 [ 265.180732][ C0] ? text_poke_sync+0x20/0x20 [ 265.185247][ C0] on_each_cpu+0xa8/0x1a0 [ 265.189428][ C0] ? __kmalloc_track_caller+0xe8/0x320 [ 265.194720][ C0] ? smp_call_function+0x90/0x90 [ 265.199481][ C0] ? text_poke_loc_init+0xc5/0x580 [ 265.204431][ C0] ? text_poke_finish+0x30/0x30 [ 265.209116][ C0] text_poke_bp_batch+0x1d4/0x600 [ 265.213979][ C0] ? __kasan_check_write+0x14/0x20 [ 265.218922][ C0] ? text_poke_loc_init+0x580/0x580 [ 265.223959][ C0] ? __kasan_check_write+0x14/0x20 [ 265.228904][ C0] ? mutex_lock+0xa5/0x110 [ 265.233158][ C0] ? mutex_trylock+0xa0/0xa0 [ 265.237588][ C0] ? __kasan_check_write+0x14/0x20 [ 265.242533][ C0] text_poke_finish+0x1a/0x30 [ 265.247044][ C0] arch_jump_label_transform_apply+0x15/0x30 [ 265.252881][ C0] __jump_label_update+0x36a/0x380 [ 265.257810][ C0] jump_label_update+0x379/0x400 [ 265.262673][ C0] static_key_enable_cpuslocked+0x12f/0x250 [ 265.268397][ C0] static_key_enable+0x1a/0x30 [ 265.272998][ C0] toggle_allocation_gate+0xbf/0x450 [ 265.278114][ C0] ? kfence_protect+0x270/0x270 [ 265.282857][ C0] ? finish_task_switch+0x130/0x5a0 [ 265.287857][ C0] ? __switch_to_asm+0x34/0x60 [ 265.292446][ C0] ? __kasan_check_read+0x11/0x20 [ 265.297305][ C0] ? read_word_at_a_time+0x12/0x20 [ 265.302243][ C0] ? strscpy+0x9c/0x260 [ 265.306255][ C0] process_one_work+0x6dc/0xbd0 [ 265.310926][ C0] worker_thread+0xaea/0x1510 [ 265.315447][ C0] kthread+0x34b/0x3d0 [ 265.319338][ C0] ? worker_clr_flags+0x180/0x180 [ 265.324200][ C0] ? kthread_blkcg+0xd0/0xd0 [ 265.328628][ C0] ret_from_fork+0x1f/0x30