./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3710920063 <...> Warning: Permanently added '10.128.1.133' (ECDSA) to the list of known hosts. execve("./syz-executor3710920063", ["./syz-executor3710920063"], 0x7ffdbe6b9c90 /* 10 vars */) = 0 brk(NULL) = 0x555555979000 brk(0x555555979c40) = 0x555555979c40 arch_prctl(ARCH_SET_FS, 0x555555979300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3710920063", 4096) = 28 brk(0x55555599ac40) = 0x55555599ac40 brk(0x55555599b000) = 0x55555599b000 mprotect(0x7f320b55c000, 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_XDP, insn_cnt=3, insns=0x20000280, license="GPL", 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, prog_btf_fd=-1, func_info_rec_size=8, func_info=NULL, func_info_cnt=0, line_info_rec_size=16, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 128) = 3 [ 77.491629][ T5080] BUG: kernel NULL pointer dereference, address: 0000000000000d28 [ 77.499474][ T5080] #PF: supervisor write access in kernel mode [ 77.505544][ T5080] #PF: error_code(0x0002) - not-present page [ 77.511553][ T5080] PGD 7b741067 P4D 7b741067 PUD 7c1ca067 PMD 0 [ 77.517835][ T5080] Oops: 0002 [#1] PREEMPT SMP KASAN [ 77.523050][ T5080] CPU: 1 PID: 5080 Comm: syz-executor371 Not tainted 6.2.0-syzkaller-13030-g3c2611bac08a #0 [ 77.533300][ T5080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 77.543364][ T5080] RIP: 0010:memset_erms+0xd/0x20 [ 77.548348][ T5080] Code: 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 66 0f 1f 00 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 66 0f 1f [ 77.567970][ T5080] RSP: 0018:ffffc90003baf730 EFLAGS: 00010246 [ 77.574047][ T5080] RAX: 0000000000000000 RBX: ffff888028b94000 RCX: 0000000000000020 [ 77.582040][ T5080] RDX: 0000000000000020 RSI: 0000000000000000 RDI: 0000000000000d28 [ 77.590034][ T5080] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000d28 [ 77.598063][ T5080] R10: ffffed100517281c R11: 0000000000094001 R12: 0000000000000d48 [ 77.606076][ T5080] R13: 0000000000000d28 R14: 0000000000000f68 R15: 0000000000000100 [ 77.614072][ T5080] FS: 0000555555979300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 77.623044][ T5080] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.629638][ T5080] CR2: 0000000000000d28 CR3: 0000000028e2d000 CR4: 00000000003506e0 [ 77.637636][ T5080] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.645640][ T5080] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.653638][ T5080] Call Trace: [ 77.656936][ T5080] [ 77.660226][ T5080] __build_skb_around+0x232/0x3a0 [ 77.665281][ T5080] build_skb_around+0x32/0x290 [ 77.670080][ T5080] __xdp_build_skb_from_frame+0x121/0x760 [ 77.675832][ T5080] bpf_test_run_xdp_live+0x1289/0x1930 [ 77.681321][ T5080] ? __static_call_update+0x4e6/0x620 [ 77.686710][ T5080] ? xdp_test_run_init_page+0x540/0x540 [ 77.692278][ T5080] ? 0xffffffffa0003b40 [ 77.696439][ T5080] ? bpf_test_run+0x9f0/0x9f0 [ 77.701138][ T5080] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 77.706823][ T5080] ? 0xffffffffa0003b40 [ 77.711085][ T5080] ? bpf_dispatcher_change_prog+0x33f/0xb60 [ 77.717024][ T5080] ? bpf_dispatcher_prepare+0x240/0x240 [ 77.722861][ T5080] ? bpf_test_init.isra.0+0x128/0x150 [ 77.728271][ T5080] bpf_prog_test_run_xdp+0xa05/0x14e0 [ 77.733683][ T5080] ? __might_fault+0xe2/0x190 [ 77.738384][ T5080] ? bpf_prog_test_run_skb+0x1e10/0x1e10 [ 77.744052][ T5080] ? __fget_light+0x20a/0x270 [ 77.748748][ T5080] ? bpf_prog_test_run_skb+0x1e10/0x1e10 [ 77.754401][ T5080] __sys_bpf+0x1598/0x5100 [ 77.758860][ T5080] ? lock_release+0x780/0x780 [ 77.763571][ T5080] ? bpf_perf_link_attach+0x520/0x520 [ 77.768964][ T5080] ? do_raw_spin_lock+0x124/0x2b0 [ 77.774019][ T5080] ? spin_bug+0x1c0/0x1c0 [ 77.778383][ T5080] ? find_held_lock+0x2d/0x110 [ 77.783175][ T5080] ? _raw_spin_unlock_irq+0x23/0x50 [ 77.788403][ T5080] ? lockdep_hardirqs_on+0x7d/0x100 [ 77.793649][ T5080] __x64_sys_bpf+0x79/0xc0 [ 77.798111][ T5080] do_syscall_64+0x39/0xb0 [ 77.802548][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 77.808455][ T5080] RIP: 0033:0x7f320b4efca9 [ 77.812886][ T5080] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 77.832622][ T5080] RSP: 002b:00007ffd2c9924d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 77.841053][ T5080] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f320b4efca9 [ 77.849051][ T5080] RDX: 0000000000000048 RSI: 0000000020000080 RDI: 000000000000000a [ 77.857058][ T5080] RBP: 00007f320b4b3e50 R08: 0000000000000000 R09: 0000000000000000 [ 77.865056][ T5080] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f320b4b3ee0 [ 77.873031][ T5080] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 77.881029][ T5080] [ 77.884053][ T5080] Modules linked in: [ 77.887957][ T5080] CR2: 0000000000000d28 [ 77.892117][ T5080] ---[ end trace 0000000000000000 ]--- [ 77.897591][ T5080] RIP: 0010:memset_erms+0xd/0x20 [ 77.902543][ T5080] Code: 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 66 0f 1f 00 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 66 0f 1f [ 77.922167][ T5080] RSP: 0018:ffffc90003baf730 EFLAGS: 00010246 [ 77.928242][ T5080] RAX: 0000000000000000 RBX: ffff888028b94000 RCX: 0000000000000020 [ 77.936234][ T5080] RDX: 0000000000000020 RSI: 0000000000000000 RDI: 0000000000000d28 [ 77.944276][ T5080] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000d28 [ 77.952447][ T5080] R10: ffffed100517281c R11: 0000000000094001 R12: 0000000000000d48 [ 77.960467][ T5080] R13: 0000000000000d28 R14: 0000000000000f68 R15: 0000000000000100 [ 77.968467][ T5080] FS: 0000555555979300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 77.977414][ T5080] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.984006][ T5080] CR2: 0000000000000d28 CR3: 0000000028e2d000 CR4: 00000000003506e0 [ 77.991989][ T5080] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.999975][ T5080] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.007960][ T5080] Kernel panic - not syncing: Fatal exception in interrupt [ 78.015229][ T5080] Kernel Offset: disabled [ 78.019566][ T5080] Rebooting in 86400 seconds..