./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor436589205 <...> Warning: Permanently added '10.128.1.91' (ED25519) to the list of known hosts. execve("./syz-executor436589205", ["./syz-executor436589205"], 0x7ffd98311900 /* 10 vars */) = 0 brk(NULL) = 0x555555636000 brk(0x555555636d00) = 0x555555636d00 arch_prctl(ARCH_SET_FS, 0x555555636380) = 0 set_tid_address(0x555555636650) = 355 set_robust_list(0x555555636660, 24) = 0 rseq(0x555555636ca0, 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-executor436589205", 4096) = 27 getrandom("\x8d\x79\x02\x32\x18\xff\x19\xa6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555636d00 brk(0x555555657d00) = 0x555555657d00 brk(0x555555658000) = 0x555555658000 mprotect(0x7f50ae9f3000, 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=0x20000ac0, license="GPL"}, 21) = 3 [ 21.748067][ T23] audit: type=1400 audit(1713677634.449:66): avc: denied { execmem } for pid=355 comm="syz-executor436" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.767356][ T23] audit: type=1400 audit(1713677634.459:67): avc: denied { prog_load } for pid=355 comm="syz-executor436" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.768149][ T355] kasan: CONFIG_KASAN_INLINE enabled [ 21.786495][ T23] audit: type=1400 audit(1713677634.469:68): avc: denied { prog_run } for pid=355 comm="syz-executor436" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 21.791373][ T355] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.791385][ T355] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 21.824954][ T355] CPU: 0 PID: 355 Comm: syz-executor436 Not tainted 5.4.268-syzkaller-00003-g2d5d8240a7cb #0 [ 21.834931][ T355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 21.844917][ T355] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 21.850466][ T355] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 a0 5a 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 82 5a 0c fe 48 8b 1b 48 83 c3 68 [ 21.870009][ T355] RSP: 0018:ffff8881dc597640 EFLAGS: 00010206 [ 21.876015][ T355] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dc92ee40 [ 21.883822][ T355] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 21.891628][ T355] RBP: ffff8881dc597690 R08: ffffffff8387c046 R09: ffff8881dc597760 [ 21.899440][ T355] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 21.907251][ T355] R13: fffffffaefa3caf4 R14: ffff8881dc605012 R15: ffff8881dc6052a0 [ 21.915065][ T355] FS: 0000555555636380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 21.923830][ T355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.930248][ T355] CR2: 0000000001273258 CR3: 00000001dc552000 CR4: 00000000003406b0 [ 21.938151][ T355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.945960][ T355] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.953772][ T355] Call Trace: [ 21.956907][ T355] ? __die+0xb4/0x100 [ 21.960720][ T355] ? die+0x26/0x50 [ 21.964287][ T355] ? do_general_protection+0x266/0x3c0 [ 21.969571][ T355] ? __kasan_kmalloc+0x1d9/0x210 [ 21.974342][ T355] ? do_trap+0x340/0x340 [ 21.978423][ T355] ? __kasan_kmalloc+0x171/0x210 [ 21.983197][ T355] ? kmem_cache_alloc+0xd9/0x250 [ 21.987984][ T355] ? build_skb+0x26/0x440 [ 21.992138][ T355] ? bpf_prog_test_run_skb+0x302/0xf00 [ 21.997430][ T355] ? do_syscall_64+0xca/0x1c0 [ 22.002038][ T355] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 22.007941][ T355] ? general_protection+0x28/0x30 [ 22.012802][ T355] ? bpf_skb_cgroup_id+0xd6/0x190 [ 22.017662][ T355] ? bpf_skb_cgroup_id+0x10f/0x190 [ 22.022611][ T355] ? bpf_test_run+0x2ae/0x6c0 [ 22.027163][ T355] ? bpf_ctx_init+0x1a0/0x1a0 [ 22.031638][ T355] ? build_skb+0x259/0x440 [ 22.035896][ T355] ? bpf_prog_test_run_skb+0x73c/0xf00 [ 22.041184][ T355] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 22.046824][ T355] ? __bpf_prog_get+0x287/0x310 [ 22.051524][ T355] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 22.057342][ T355] ? __se_sys_bpf+0x2e37/0xbcb0 [ 22.062019][ T355] ? check_preemption_disabled+0x9f/0x320 [ 22.067567][ T355] ? debug_smp_processor_id+0x20/0x20 [ 22.072783][ T355] ? check_preemption_disabled+0x9f/0x320 [ 22.078331][ T355] ? check_preemption_disabled+0x9f/0x320 [ 22.083892][ T355] ? debug_smp_processor_id+0x20/0x20 [ 22.089094][ T355] ? debug_smp_processor_id+0x20/0x20 [ 22.094298][ T355] ? __x64_sys_bpf+0x80/0x80 [ 22.098730][ T355] ? switch_mm_irqs_off+0x6b5/0xab0 [ 22.103762][ T355] ? _raw_spin_unlock_irq+0x4a/0x60 [ 22.108796][ T355] ? finish_task_switch+0x130/0x590 [ 22.113929][ T355] ? __schedule+0xb0d/0x1320 [ 22.118354][ T355] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 22.123293][ T355] ? _raw_spin_lock_irqsave+0x210/0x210 [ 22.128671][ T355] ? cgroup_update_frozen+0x157/0xab0 [ 22.133879][ T355] ? cgroup_update_frozen+0x157/0xab0 [ 22.139086][ T355] ? cgroup_leave_frozen+0x13c/0x290 [ 22.144208][ T355] ? ptrace_stop+0x6ee/0xa30 [ 22.148642][ T355] ? _raw_spin_unlock_irq+0x4a/0x60 [ 22.153754][ T355] ? ptrace_notify+0x24c/0x350 [ 22.158354][ T355] ? do_notify_parent+0xa10/0xa10 [ 22.163215][ T355] ? check_preemption_disabled+0x153/0x320 [ 22.168856][ T355] ? syscall_trace_enter+0x650/0x940 [ 22.173978][ T355] ? do_syscall_64+0xca/0x1c0 [ 22.178490][ T355] ? entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 22.184388][ T355] Modules linked in: [ 22.188215][ T355] ---[ end trace 7c0eee5e2bd68385 ]--- [ 22.193452][ T355] RIP: 0010:bpf_skb_cgroup_id+0x10f/0x190 [ 22.199003][ T355] Code: c7 a0 02 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 a0 5a 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 82 5a 0c fe 48 8b 1b 48 83 c3 68 [ 22.218466][ T355] RSP: 0018:ffff8881dc597640 EFLAGS: 00010206 [ 22.226249][ T355] RAX: 0000000000000028 RBX: 0000000000000140 RCX: ffff8881dc92ee40 [ 22.234062][ T355] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000000000000 [ 22.241872][ T355] RBP: ffff8881dc597690 R08: ffffffff8387c046 R09: ffff8881dc597760 [ 22.249688][ T355] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 22.257647][ T355] R13: fffffffaefa3caf4 R14: ffff8881dc605012 R15: ffff8881dc6052a0 [ 22.265487][ T355] FS: 0000555555636380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.274250][ T355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.280676][ T355] CR2: 0000000001273258 CR3: 00000001dc552000 CR4: 00000000003406b0 [ 22.288470][ T355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.296307][ T355] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.304105][ T355] Kernel panic - not syncing: Fatal exception [ 22.310208][ T355] Kernel Offset: disabled [ 22.314327][ T355] Rebooting in 86400 seconds..