./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor460947218 <...> Warning: Permanently added '10.128.0.236' (ED25519) to the list of known hosts. execve("./syz-executor460947218", ["./syz-executor460947218"], 0x7ffdf7d08ed0 /* 10 vars */) = 0 brk(NULL) = 0x55555752e000 brk(0x55555752ed00) = 0x55555752ed00 arch_prctl(ARCH_SET_FS, 0x55555752e380) = 0 set_tid_address(0x55555752e650) = 5068 set_robust_list(0x55555752e660, 24) = 0 rseq(0x55555752eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor460947218", 4096) = 27 getrandom("\x1d\xe8\x0c\x0e\x03\x32\x59\x50", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555752ed00 brk(0x55555754fd00) = 0x55555754fd00 brk(0x555557550000) = 0x555557550000 mprotect(0x7fcdae016000, 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./strace-static-x86_64: Process 5069 attached , child_tidptr=0x55555752e650) = 5069 [pid 5069] set_robust_list(0x55555752e660, 24) = 0 [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5069] setpgid(0, 0) = 0 [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5069] write(3, "1000", 4) = 4 [pid 5069] close(3) = 0 [pid 5069] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=11, insns=0x200006c0, 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=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 144) = 3 [pid 5069] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="kfree", prog_fd=3}}, 16) = 4 [pid 5069] exit_group(0) = ? [ 70.977685][ T5069] BUG: unable to handle page fault for address: ffffffffff600000 [ 70.985435][ T5069] #PF: supervisor read access in kernel mode [ 70.991404][ T5069] #PF: error_code(0x0000) - not-present page [ 70.997374][ T5069] PGD df36067 P4D df36067 PUD df38067 PMD df5b067 PTE 0 [ 71.004330][ T5069] Oops: 0000 [#1] PREEMPT SMP KASAN PTI [ 71.009870][ T5069] CPU: 1 PID: 5069 Comm: syz-executor460 Not tainted 6.8.0-rc2-syzkaller-00696-ga8882313c564 #0 [ 71.020275][ T5069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 71.030328][ T5069] RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1d0 [ 71.036861][ T5069] Code: 00 48 89 d0 48 c1 e8 03 48 89 44 24 10 0f b6 04 28 84 c0 48 89 14 24 0f 85 d9 00 00 00 ff 02 45 31 f6 49 89 df 48 8b 54 24 08 <42> 8a 1c 33 4a 8d 3c 32 48 89 f8 48 c1 e8 03 49 89 ec 0f b6 04 28 [ 71.056465][ T5069] RSP: 0018:ffffc900042c7888 EFLAGS: 00010246 [ 71.062535][ T5069] RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff888024711dc0 [ 71.070505][ T5069] RDX: ffffc900042c7900 RSI: ffffffffff600000 RDI: ffffffffff600000 [ 71.078477][ T5069] RBP: dffffc0000000000 R08: ffffffff8141ebcd R09: 1ffffffff2591a84 [ 71.086452][ T5069] R10: dffffc0000000000 R11: ffffffffa00007e0 R12: ffffffffff600000 [ 71.094431][ T5069] R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 [ 71.102405][ T5069] FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 71.111336][ T5069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.117921][ T5069] CR2: ffffffffff600000 CR3: 000000000df32000 CR4: 00000000003506f0 [ 71.125895][ T5069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.133869][ T5069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.141840][ T5069] Call Trace: [ 71.145123][ T5069] [ 71.148054][ T5069] ? __die_body+0x8b/0xe0 [ 71.152395][ T5069] ? 0xffffffffff600000 [ 71.156551][ T5069] ? page_fault_oops+0x806/0xaa0 [ 71.161491][ T5069] ? 0xffffffffff600000 [ 71.165649][ T5069] ? __pfx_page_fault_oops+0x10/0x10 [ 71.170939][ T5069] ? mark_lock+0x9a/0x350 [ 71.175273][ T5069] ? __lock_acquire+0x1345/0x1fd0 [ 71.180315][ T5069] ? rcu_is_watching+0x15/0xb0 [ 71.185092][ T5069] ? 0xffffffffff600000 [ 71.189261][ T5069] ? exc_page_fault+0x5de/0x870 [ 71.194132][ T5069] ? 0xffffffffff600000 [ 71.198291][ T5069] ? asm_exc_page_fault+0x26/0x30 [ 71.203318][ T5069] ? 0xffffffffff600000 [ 71.207473][ T5069] ? 0xffffffffff600000 [ 71.211624][ T5069] ? 0xffffffffff600000 [ 71.215774][ T5069] ? 0xffffffffa00007e0 [ 71.219928][ T5069] ? copy_from_kernel_nofault_allowed+0x8d/0x100 [ 71.226261][ T5069] ? 0xffffffffff600000 [ 71.230413][ T5069] ? 0xffffffffff600000 [ 71.234564][ T5069] ? strncpy_from_kernel_nofault+0x8d/0x1d0 [ 71.240474][ T5069] ? strncpy_from_kernel_nofault+0x43/0x1d0 [ 71.246380][ T5069] ? 0xffffffffff600000 [ 71.250533][ T5069] bpf_probe_read_kernel_str+0x2a/0x70 [ 71.256003][ T5069] bpf_prog_ef3a4661c9d1378e+0x4a/0x4c [ 71.261461][ T5069] bpf_trace_run2+0x204/0x420 [ 71.266144][ T5069] ? bpf_trace_run2+0x114/0x420 [ 71.271006][ T5069] ? __pfx_bpf_trace_run2+0x10/0x10 [ 71.276206][ T5069] ? __vm_area_free+0x42/0x110 [ 71.280978][ T5069] ? __pfx___might_resched+0x10/0x10 [ 71.286269][ T5069] ? free_unref_page+0x18e/0x3f0 [ 71.291212][ T5069] ? __vm_area_free+0x42/0x110 [ 71.295990][ T5069] kfree+0x28e/0x380 [ 71.299894][ T5069] __vm_area_free+0x42/0x110 [ 71.304493][ T5069] exit_mmap+0x6a9/0xd40 [ 71.308752][ T5069] ? __pfx_exit_mmap+0x10/0x10 [ 71.313524][ T5069] ? __asan_memset+0x23/0x50 [ 71.318132][ T5069] ? uprobe_clear_state+0x277/0x290 [ 71.323337][ T5069] ? mm_update_next_owner+0x53b/0x660 [ 71.328719][ T5069] __mmput+0x115/0x3c0 [ 71.332799][ T5069] exit_mm+0x21f/0x310 [ 71.336877][ T5069] ? __pfx_exit_mm+0x10/0x10 [ 71.341473][ T5069] ? taskstats_exit+0x439/0xa00 [ 71.346333][ T5069] ? tty_audit_exit+0x154/0x200 [ 71.351204][ T5069] do_exit+0x9af/0x2740 [ 71.355369][ T5069] ? __pfx_do_exit+0x10/0x10 [ 71.359965][ T5069] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 71.365957][ T5069] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 71.372297][ T5069] ? _raw_spin_unlock_irq+0x23/0x50 [ 71.377505][ T5069] ? lockdep_hardirqs_on+0x98/0x140 [ 71.382723][ T5069] do_group_exit+0x206/0x2c0 [ 71.387339][ T5069] __x64_sys_exit_group+0x3f/0x40 [ 71.392395][ T5069] do_syscall_64+0xf9/0x240 [ 71.396918][ T5069] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 71.402833][ T5069] RIP: 0033:0x7fcdadfa1c89 [ 71.407262][ T5069] Code: Unable to access opcode bytes at 0x7fcdadfa1c5f. [ 71.414282][ T5069] RSP: 002b:00007ffef6c183b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 71.422704][ T5069] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdadfa1c89 [ 71.430680][ T5069] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 71.438654][ T5069] RBP: 00007fcdae01c290 R08: ffffffffffffffb8 R09: 0000000000000006 [ 71.446630][ T5069] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcdae01c290 [ 71.454605][ T5069] R13: 0000000000000000 R14: 00007fcdae01cce0 R15: 00007fcdadf72ec0 [ 71.462591][ T5069] [ 71.465608][ T5069] Modules linked in: [ 71.469506][ T5069] CR2: ffffffffff600000 [ 71.473656][ T5069] ---[ end trace 0000000000000000 ]--- [ 71.479113][ T5069] RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1d0 [ 71.485631][ T5069] Code: 00 48 89 d0 48 c1 e8 03 48 89 44 24 10 0f b6 04 28 84 c0 48 89 14 24 0f 85 d9 00 00 00 ff 02 45 31 f6 49 89 df 48 8b 54 24 08 <42> 8a 1c 33 4a 8d 3c 32 48 89 f8 48 c1 e8 03 49 89 ec 0f b6 04 28 [ 71.505237][ T5069] RSP: 0018:ffffc900042c7888 EFLAGS: 00010246 [ 71.511309][ T5069] RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff888024711dc0 [ 71.519283][ T5069] RDX: ffffc900042c7900 RSI: ffffffffff600000 RDI: ffffffffff600000 [ 71.527258][ T5069] RBP: dffffc0000000000 R08: ffffffff8141ebcd R09: 1ffffffff2591a84 [ 71.535229][ T5069] R10: dffffc0000000000 R11: ffffffffa00007e0 R12: ffffffffff600000 [ 71.543202][ T5069] R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 [ 71.551174][ T5069] FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 71.560107][ T5069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.566689][ T5069] CR2: ffffffffff600000 CR3: 000000000df32000 CR4: 00000000003506f0 [ 71.574666][ T5069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.582635][ T5069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.590618][ T5069] Kernel panic - not syncing: Fatal exception [ 71.596965][ T5069] Kernel Offset: disabled [ 71.601290][ T5069] Rebooting in 86400 seconds..