./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1820553227 <...> no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 12.866670][ T23] kauditd_printk_skb: 60 callbacks suppressed [ 12.866678][ T23] audit: type=1400 audit(1669624058.370:71): avc: denied { transition } for pid=265 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.871912][ T23] audit: type=1400 audit(1669624058.370:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[480]" dev="pipefs" ino=480 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 14.278363][ T272] sshd (272) used greatest stack depth: 22808 bytes left Warning: Permanently added '10.128.1.92' (ECDSA) to the list of known hosts. execve("./syz-executor1820553227", ["./syz-executor1820553227"], 0x7ffc10738ab0 /* 10 vars */) = 0 brk(NULL) = 0x555555724000 brk(0x555555724c40) = 0x555555724c40 arch_prctl(ARCH_SET_FS, 0x555555724300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1820553227", 4096) = 28 brk(0x555555745c40) = 0x555555745c40 brk(0x555555746000) = 0x555555746000 mprotect(0x7fb13f92e000, 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_ACT, insn_cnt=14, insns=0x200009c0, license="syzkaller", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 3 [ 20.284670][ T23] audit: type=1400 audit(1669624065.780:73): avc: denied { execmem } for pid=304 comm="syz-executor182" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.306067][ T23] audit: type=1400 audit(1669624065.810:74): avc: denied { prog_load } for pid=304 comm="syz-executor182" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 20.327128][ T23] audit: type=1400 audit(1669624065.830:75): avc: denied { prog_run } for pid=304 comm="syz-executor182" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bpf permissive=1 [ 20.327712][ T304] kasan: CONFIG_KASAN_INLINE enabled [ 20.351670][ T304] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 20.359965][ T304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 20.366876][ T304] CPU: 0 PID: 304 Comm: syz-executor182 Not tainted 5.4.210-syzkaller-00006-gc80a5b2e7f63 #0 [ 20.376995][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 20.387147][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 20.393650][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 a0 64 14 fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 3e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 [ 20.413438][ T304] RSP: 0018:ffff8881dd3e74b8 EFLAGS: 00010203 [ 20.419487][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 20.427429][ T304] RDX: ffff8881dd351f80 RSI: 0000000000000080 RDI: 000000000000011c [ 20.435367][ T304] RBP: 0000000000000080 R08: ffffffff837f3ed7 R09: ffff8881dd3e7760 [ 20.443434][ T304] R10: ffffed103ba7ceee R11: 1ffff1103ba7ceec R12: dffffc0000000000 [ 20.451389][ T304] R13: fffffffb4581c3c2 R14: 0000000000000000 R15: ffff8881e2c76812 [ 20.459494][ T304] FS: 0000555555724300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.468509][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.475072][ T304] CR2: 00007fddcfa48a70 CR3: 00000001dd1d3000 CR4: 00000000003406f0 [ 20.483129][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.491076][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.499208][ T304] Call Trace: [ 20.502485][ T304] ? __kasan_kmalloc+0x131/0x1e0 [ 20.507499][ T304] ? kmem_cache_alloc+0xd0/0x210 [ 20.512419][ T304] ? build_skb+0x27/0x450 [ 20.516802][ T304] ? bpf_prog_test_run_skb+0x3f6/0xf80 [ 20.522254][ T304] ? __se_sys_bpf+0x2bbc/0xbba0 [ 20.527096][ T304] ? do_syscall_64+0xcb/0x1c0 [ 20.531775][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.537827][ T304] ? common_interrupt+0xa/0xf [ 20.542479][ T304] ? ktime_get+0xfd/0x130 [ 20.546867][ T304] ? bpf_test_run+0x2b4/0x6a0 [ 20.551515][ T304] ? bpf_ctx_init+0x1b0/0x1b0 [ 20.556180][ T304] ? bpf_prog_test_run_skb+0x842/0xf80 [ 20.561609][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 20.567846][ T304] ? __fdget+0x14f/0x200 [ 20.572066][ T304] ? bpf_prog_get+0x183/0x1b0 [ 20.576831][ T304] ? __bpf_trace_bpf_test_finish+0x20/0x20 [ 20.583100][ T304] ? __se_sys_bpf+0x2bbc/0xbba0 [ 20.588039][ T304] ? check_preemption_disabled+0x9e/0x330 [ 20.593835][ T304] ? rcu_softirq_qs+0x90/0x90 [ 20.598491][ T304] ? debug_smp_processor_id+0x20/0x20 [ 20.603851][ T304] ? check_preemption_disabled+0x9e/0x330 [ 20.609536][ T304] ? check_preemption_disabled+0x9e/0x330 [ 20.615313][ T304] ? debug_smp_processor_id+0x20/0x20 [ 20.620656][ T304] ? switch_mm_irqs_off+0x542/0x960 [ 20.625900][ T304] ? debug_smp_processor_id+0x20/0x20 [ 20.631336][ T304] ? __x64_sys_bpf+0x80/0x80 [ 20.635986][ T304] ? switch_mm+0x100/0x100 [ 20.640386][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 20.645564][ T304] ? finish_task_switch+0x130/0x560 [ 20.650751][ T304] ? __schedule+0x98e/0x1050 [ 20.655443][ T304] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 20.660629][ T304] ? _raw_spin_lock_irqsave+0x210/0x210 [ 20.666150][ T304] ? cgroup_update_frozen+0x139/0x360 [ 20.671577][ T304] ? cgroup_update_frozen+0x139/0x360 [ 20.676918][ T304] ? cgroup_leave_frozen+0x13b/0x290 [ 20.682439][ T304] ? ptrace_stop+0x6eb/0xa30 [ 20.687125][ T304] ? _raw_spin_unlock_irq+0x4a/0x60 [ 20.692307][ T304] ? ptrace_notify+0x248/0x340 [ 20.697055][ T304] ? do_notify_parent+0xa40/0xa40 [ 20.702054][ T304] ? check_preemption_disabled+0x154/0x330 [ 20.707831][ T304] ? syscall_trace_enter+0x652/0x940 [ 20.713086][ T304] ? switch_fpu_return+0x10/0x10 [ 20.718002][ T304] ? do_syscall_64+0xcb/0x1c0 [ 20.722737][ T304] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 20.728769][ T304] Modules linked in: [ 20.732698][ T304] ---[ end trace bb4bac7b3d650a68 ]--- [ 20.738180][ T304] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x111/0x280 [ 20.744670][ T304] Code: 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 a0 64 14 fe 48 8b 1b 48 8d bb 1c 01 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 3e 01 00 00 8b ab 1c 01 00 00 89 ef 44 89 [ 20.764397][ T304] RSP: 0018:ffff8881dd3e74b8 EFLAGS: 00010203 [ 20.770483][ T304] RAX: 0000000000000023 RBX: 0000000000000000 RCX: 0000000000000000 [ 20.778484][ T304] RDX: ffff8881dd351f80 RSI: 0000000000000080 RDI: 000000000000011c [ 20.786471][ T304] RBP: 0000000000000080 R08: ffffffff837f3ed7 R09: ffff8881dd3e7760 [ 20.794423][ T304] R10: ffffed103ba7ceee R11: 1ffff1103ba7ceec R12: dffffc0000000000 [ 20.802402][ T304] R13: fffffffb4581c3c2 R14: 0000000000000000 R15: ffff8881e2c76812 [ 20.810374][ T304] FS: 0000555555724300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 20.819620][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.826202][ T304] CR2: 00007fddcfa48a70 CR3: 00000001dd1d3000 CR4: 00000000003406f0 [ 20.834149][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.842119][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.850116][ T304] Kernel panic - not syncing: Fatal exception [ 20.856229][ T304] Kernel Offset: disabled [ 20.860535][ T304] Rebooting in 86400 seconds..