./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3414319837 <...> Warning: Permanently added '10.128.1.80' (ED25519) to the list of known hosts. execve("./syz-executor3414319837", ["./syz-executor3414319837"], 0x7ffce44f53e0 /* 10 vars */) = 0 brk(NULL) = 0x5555629d6000 brk(0x5555629d6d00) = 0x5555629d6d00 arch_prctl(ARCH_SET_FS, 0x5555629d6380) = 0 set_tid_address(0x5555629d6650) = 288 set_robust_list(0x5555629d6660, 24) = 0 rseq(0x5555629d6ca0, 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-executor3414319837", 4096) = 28 getrandom("\x83\x3e\xcf\x5b\x3b\x61\xaa\xc5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555629d6d00 brk(0x5555629f7d00) = 0x5555629f7d00 brk(0x5555629f8000) = 0x5555629f8000 mprotect(0x7f600f4b3000, 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=0x5555629d6650) = 289 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 289 attached [pid 288] write(3, "0", 1) = 1 [pid 288] close(3) = 0 [pid 288] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 288] write(3, "0", 1) = 1 [pid 288] close(3) = 0 [pid 288] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 288] write(3, "7 4 1 3", 7) = 7 [pid 288] close(3) = 0 [pid 288] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 288] write(3, "1", 1) = 1 [pid 288] close(3) = 0 [pid 288] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 288] write(3, "1", 1) = 1 [pid 288] close(3) = 0 [pid 288] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 288] write(3, "0", 1) = 1 [pid 288] close(3) = 0 [pid 288] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 288] write(3, "289", 3) = 3 [pid 288] close(3) = 0 [pid 288] kill(289, SIGKILL) = 0 [pid 289] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=289, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- mkdir("./syzkaller.j8Qmrk", 0700) = 0 chmod("./syzkaller.j8Qmrk", 0777) = 0 chdir("./syzkaller.j8Qmrk") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x5555629d6660, 24) = 0 [pid 290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 290] getppid() = 0 [pid 290] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 290] unshare(CLONE_NEWNS) = 0 [pid 288] <... clone resumed>, child_tidptr=0x5555629d6650) = 290 [pid 290] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 290] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 290] unshare(CLONE_NEWCGROUP) = 0 [pid 290] unshare(CLONE_NEWUTS) = 0 [pid 290] unshare(CLONE_SYSVSEM) = 0 [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] getpid() = 1 [pid 290] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<, priority 10 [ 23.439236][ T7] tipc: Disabling bearer [ 23.444185][ T25] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 23.448121][ T7] tipc: Left network mode [ 23.455687][ T25] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 23.468107][ T25] CPU: 1 PID: 25 Comm: kworker/1:1 Not tainted 5.10.231-syzkaller-00700-g4055d754db6f #0 [ 23.477728][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 23.487643][ T25] Workqueue: events cleanup_bearer [ 23.492569][ T25] RIP: 0010:cleanup_bearer+0x1dc/0x2b0 [ 23.497862][ T25] Code: 8b 1e 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 42 16 0a fd 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 25 16 0a fd 4c 8b 33 48 c7 c0 80 [ 23.517306][ T25] RSP: 0018:ffffc900001afcf0 EFLAGS: 00010206 [ 23.523205][ T25] RAX: 0000000000000006 RBX: 0000000000000030 RCX: 0000000000000000 [ 23.531013][ T25] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff867996f0 [ 23.538826][ T25] RBP: ffffc900001afd30 R08: dffffc0000000000 R09: fffffbfff0cf32df [ 23.546638][ T25] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888109acfe00 [ 23.554448][ T25] R13: dffffc0000000000 R14: ffff88810f10ac08 R15: ffff88810f10ac18 [ 23.562261][ T25] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.571026][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.577446][ T25] CR2: 00007f600f460ae0 CR3: 000000000660f000 CR4: 00000000003506a0 [ 23.585263][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.593071][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.600883][ T25] Call Trace: [ 23.604015][ T25] ? __die_body+0x62/0xb0 [ 23.608175][ T25] ? die_addr+0x9f/0xd0 [ 23.612168][ T25] ? exc_general_protection+0x3ff/0x490 [ 23.617551][ T25] ? asm_exc_general_protection+0x1e/0x30 [ 23.623118][ T25] ? cleanup_bearer+0x1dc/0x2b0 [ 23.627789][ T25] process_one_work+0x6dc/0xbd0 [ 23.632475][ T25] worker_thread+0xaea/0x1510 [ 23.636992][ T25] ? _raw_spin_lock+0x1b0/0x1b0 [ 23.641678][ T25] ? __kasan_check_read+0x11/0x20 [ 23.646536][ T25] kthread+0x34b/0x3d0 [ 23.650440][ T25] ? worker_clr_flags+0x180/0x180 [ 23.655304][ T25] ? kthread_blkcg+0xd0/0xd0 [ 23.659733][ T25] ret_from_fork+0x1f/0x30 [ 23.663980][ T25] Modules linked in: [ 23.668819][ T25] ---[ end trace be534e2e2457556a ]--- [ 23.674129][ T25] RIP: 0010:cleanup_bearer+0x1dc/0x2b0 [pid 302] +++ killed by SIGKILL +++ [pid 290] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=290, si_uid=0, si_status=1, si_utime=3, si_stime=37} --- exit_group(0) = ? +++ exited with 0 +++ [ 23.679455][ T25] Code: 8b 1e 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 42 16 0a fd 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8