./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1357161819 <...> [ 15.036990][ T23] audit: type=1400 audit(1696286994.659:64): avc: denied { rlimitinh } for pid=288 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.039585][ T23] audit: type=1400 audit(1696286994.659:65): avc: denied { siginh } for pid=288 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 16.381635][ T289] sshd (289) used greatest stack depth: 22200 bytes left Warning: Permanently added '10.128.0.157' (ED25519) to the list of known hosts. execve("./syz-executor1357161819", ["./syz-executor1357161819"], 0x7ffc18d835c0 /* 10 vars */) = 0 brk(NULL) = 0x5555571bc000 brk(0x5555571bcd00) = 0x5555571bcd00 arch_prctl(ARCH_SET_FS, 0x5555571bc380) = 0 set_tid_address(0x5555571bc650) = 357 set_robust_list(0x5555571bc660, 24) = 0 rseq(0x5555571bcca0, 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-executor1357161819", 4096) = 28 getrandom("\xbe\xf8\x72\xc1\x34\x00\x5c\x7e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555571bcd00 brk(0x5555571ddd00) = 0x5555571ddd00 brk(0x5555571de000) = 0x5555571de000 mprotect(0x7ff884f4c000, 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 bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SCHED_CLS, insn_cnt=4, insns=0x20000780, license="GPL"}, 21) = 3 [ 23.424801][ T23] audit: type=1400 audit(1696287003.059:66): avc: denied { execmem } for pid=357 comm="syz-executor135" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.445291][ T23] audit: type=1400 audit(1696287003.079:67): avc: denied { prog_load } for pid=357 comm="syz-executor135" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 23.464605][ T23] audit: type=1400 audit(1696287003.099:68): avc: denied { prog_run } for pid=357 comm="syz-executor135" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 23.473527][ T357] kasan: CONFIG_KASAN_INLINE enabled [ 23.488655][ T357] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.496622][ T357] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 23.503326][ T357] CPU: 0 PID: 357 Comm: syz-executor135 Not tainted 5.4.254-syzkaller-00010-g5f1cbd78af59 #0 [ 23.513305][ T357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 23.523205][ T357] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 23.528755][ T357] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 b0 9d 0c fe bb 40 01 00 00 49 03 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 92 9d 0c fe 48 8b 1b 48 83 c3 68 [ 23.548193][ T357] RSP: 0018:ffff8881dc7a7640 EFLAGS: 00010206 [ 23.554096][ T357] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dc5abf00 [ 23.561905][ T357] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 23.569719][ T357] RBP: ffff8881dc7a7690 R08: ffffffff83876726 R09: ffff8881dc7a7760 [ 23.577530][ T357] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 23.585340][ T357] R13: fffffffa8a401849 R14: ffff8881dc7e6812 R15: ffff8881dc7e6aa0 [ 23.593158][ T357] FS: 00005555571bc380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.601919][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.608342][ T357] CR2: 00000000202a1000 CR3: 00000001dcf70000 CR4: 00000000003406b0 [ 23.616152][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.623970][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.631858][ T357] Call Trace: [ 23.634994][ T357] ? __die+0xb4/0x100 [ 23.638803][ T357] ? die+0x26/0x50 [ 23.642364][ T357] ? do_general_protection+0x266/0x3c0 [ 23.647669][ T357] ? __kasan_kmalloc+0x1d9/0x210 [ 23.652432][ T357] ? do_trap+0x340/0x340 [ 23.656597][ T357] ? __kasan_kmalloc+0x171/0x210 [ 23.661369][ T357] ? kmem_cache_alloc+0xd9/0x250 [ 23.666144][ T357] ? build_skb+0x26/0x440 [ 23.670310][ T357] ? bpf_prog_test_run_skb+0x302/0xf00 [ 23.675606][ T357] ? do_syscall_64+0xca/0x1c0 [ 23.680120][ T357] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 23.686114][ T357] ? general_protection+0x28/0x30 [ 23.690968][ T357] ? bpf_skb_cgroup_id+0xd6/0x190 [ 23.695830][ T357] ? bpf_skb_cgroup_id+0x10f/0x190 [ 23.700783][ T357] ? bpf_test_run+0x2ae/0x6c0 [ 23.705288][ T357] ? bpf_ctx_init+0x1a0/0x1a0 [ 23.709799][ T357] ? build_skb+0x259/0x440 [ 23.714054][ T357] ? bpf_prog_test_run_skb+0x73c/0xf00 [ 23.719348][ T357] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 23.724991][ T357] ? __bpf_prog_get+0x287/0x310 [ 23.729678][ T357] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 23.735318][ T357] ? __se_sys_bpf+0x2e37/0xbcb0 [ 23.740007][ T357] ? _raw_spin_trylock_bh+0x190/0x190 [ 23.745212][ T357] ? newidle_balance+0x761/0x930 [ 23.749993][ T357] ? check_preemption_disabled+0x9f/0x320 [ 23.755540][ T357] ? check_preemption_disabled+0x9f/0x320 [ 23.761093][ T357] ? debug_smp_processor_id+0x20/0x20 [ 23.766301][ T357] ? debug_smp_processor_id+0x20/0x20 [ 23.771509][ T357] ? __x64_sys_bpf+0x80/0x80 [ 23.775936][ T357] ? find_next_bit+0x7b/0x100 [ 23.780450][ T357] ? _raw_spin_unlock_irq+0x4a/0x60 [ 23.785483][ T357] ? finish_task_switch+0x130/0x590 [ 23.790517][ T357] ? __schedule+0xb0d/0x1320 [ 23.794943][ T357] ? common_interrupt+0xa/0xf [ 23.799455][ T357] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 23.804403][ T357] ? _raw_spin_lock_irqsave+0x210/0x210 [ 23.809784][ T357] ? cgroup_update_frozen+0x157/0xab0 [ 23.814991][ T357] ? __schedule+0xb72/0x1320 [ 23.819417][ T357] ? cgroup_leave_frozen+0x13c/0x290 [ 23.824539][ T357] ? ptrace_stop+0x6ee/0xa30 [ 23.828966][ T357] ? _raw_spin_unlock_irq+0x4a/0x60 [ 23.833999][ T357] ? ptrace_notify+0x24c/0x350 [ 23.838596][ T357] ? do_notify_parent+0xa10/0xa10 [ 23.843468][ T357] ? check_preemption_disabled+0x153/0x320 [ 23.849100][ T357] ? syscall_trace_enter+0x650/0x940 [ 23.854223][ T357] ? do_syscall_64+0xca/0x1c0 [ 23.858732][ T357] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 23.864634][ T357] Modules linked in: [ 23.868413][ T357] ---[ end trace 5ac7f0cbf2b5695f ]--- [ 23.873699][ T357] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 23.879223][ T357] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 b0 9d 0c fe bb 40 01 00 00 49 03 1f 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 92 9d 0c fe 48 8b 1b 48 83 c3 68 [ 23.898759][ T357] RSP: 0018:ffff8881dc7a7640 EFLAGS: 00010206 [ 23.904667][ T357] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dc5abf00 [ 23.912459][ T357] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 23.920292][ T357] RBP: ffff8881dc7a7690 R08: ffffffff83876726 R09: ffff8881dc7a7760 [ 23.928094][ T357] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 23.935921][ T357] R13: fffffffa8a401849 R14: ffff8881dc7e6812 R15: ffff8881dc7e6aa0 [ 23.943719][ T357] FS: 00005555571bc380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.952465][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.958911][ T357] CR2: 00000000202a1000 CR3: 00000001dcf70000 CR4: 00000000003406b0 [ 23.966721][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.974530][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.982324][ T357] Kernel panic - not syncing: Fatal exception [ 23.988398][ T357] Kernel Offset: disabled [ 23.992510][ T357] Rebooting in 86400 seconds..