./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1710312079 <...> Warning: Permanently added '10.128.10.1' (ED25519) to the list of known hosts. execve("./syz-executor1710312079", ["./syz-executor1710312079"], 0x7ffe31494c80 /* 10 vars */) = 0 brk(NULL) = 0x555556151000 brk(0x555556151d00) = 0x555556151d00 arch_prctl(ARCH_SET_FS, 0x555556151380) = 0 set_tid_address(0x555556151650) = 5063 set_robust_list(0x555556151660, 24) = 0 rseq(0x555556151ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1710312079", 4096) = 28 getrandom("\xe9\xd0\x03\x63\x9b\x5d\xae\xb9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556151d00 brk(0x555556172d00) = 0x555556172d00 brk(0x555556173000) = 0x555556173000 mprotect(0x7fddca135000, 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, child_tidptr=0x555556151650) = 5064 ./strace-static-x86_64: Process 5064 attached [pid 5064] set_robust_list(0x555556151660, 24) = 0 [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5064] setpgid(0, 0) = 0 [pid 5064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1000", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] 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 5064] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="kfree", prog_fd=3}}, 16) = 4 [pid 5064] exit_group(0) = ? [ 63.635921][ T5064] BUG: unable to handle page fault for address: ffffffffff600000 [ 63.643685][ T5064] #PF: supervisor read access in kernel mode [ 63.649656][ T5064] #PF: error_code(0x0000) - not-present page [ 63.655660][ T5064] PGD df36067 P4D df36067 PUD df38067 PMD df5b067 PTE 0 [ 63.662617][ T5064] Oops: 0000 [#1] PREEMPT SMP KASAN PTI [ 63.668171][ T5064] CPU: 1 PID: 5064 Comm: syz-executor171 Not tainted 6.8.0-rc1-syzkaller-00523-g6fb3f72702fb #0 [ 63.678594][ T5064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 63.688657][ T5064] RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1d0 [ 63.695175][ T5064] 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 [ 63.714791][ T5064] RSP: 0018:ffffc90003b5f888 EFLAGS: 00010246 [ 63.720860][ T5064] RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff88801871d940 [ 63.728842][ T5064] RDX: ffffc90003b5f900 RSI: ffffffffff600000 RDI: ffffffffff600000 [ 63.736822][ T5064] RBP: dffffc0000000000 R08: ffffffff8141da1d R09: 1ffffffff2591484 [ 63.744795][ T5064] R10: dffffc0000000000 R11: ffffffffa0001f90 R12: ffffffffff600000 [ 63.752767][ T5064] R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 [ 63.760728][ T5064] FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 63.769651][ T5064] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.776226][ T5064] CR2: ffffffffff600000 CR3: 000000000df32000 CR4: 00000000003506f0 [ 63.784191][ T5064] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.792154][ T5064] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.800121][ T5064] Call Trace: [ 63.803396][ T5064] [ 63.806320][ T5064] ? __die_body+0x8b/0xe0 [ 63.810653][ T5064] ? 0xffffffffff600000 [ 63.814797][ T5064] ? page_fault_oops+0x806/0xaa0 [ 63.819737][ T5064] ? 0xffffffffff600000 [ 63.823885][ T5064] ? __pfx_page_fault_oops+0x10/0x10 [ 63.829171][ T5064] ? mark_lock+0x9a/0x350 [ 63.833494][ T5064] ? __lock_acquire+0x1345/0x1fd0 [ 63.838518][ T5064] ? rcu_is_watching+0x15/0xb0 [ 63.843280][ T5064] ? 0xffffffffff600000 [ 63.847426][ T5064] ? exc_page_fault+0x5de/0x870 [ 63.852284][ T5064] ? 0xffffffffff600000 [ 63.856431][ T5064] ? asm_exc_page_fault+0x26/0x30 [ 63.861452][ T5064] ? 0xffffffffff600000 [ 63.865601][ T5064] ? 0xffffffffff600000 [ 63.871311][ T5064] ? 0xffffffffff600000 [ 63.875456][ T5064] ? 0xffffffffa0001f90 [ 63.879600][ T5064] ? copy_from_kernel_nofault_allowed+0x8d/0x100 [ 63.885924][ T5064] ? 0xffffffffff600000 [ 63.890073][ T5064] ? 0xffffffffff600000 [ 63.894226][ T5064] ? strncpy_from_kernel_nofault+0x8d/0x1d0 [ 63.900204][ T5064] ? strncpy_from_kernel_nofault+0x43/0x1d0 [ 63.906196][ T5064] ? 0xffffffffff600000 [ 63.910353][ T5064] bpf_probe_read_kernel_str+0x2a/0x70 [ 63.915814][ T5064] bpf_prog_ef3a4661c9d1378e+0x4a/0x4c [ 63.921269][ T5064] bpf_trace_run2+0x204/0x420 [ 63.925967][ T5064] ? bpf_trace_run2+0x114/0x420 [ 63.930827][ T5064] ? __pfx_bpf_trace_run2+0x10/0x10 [ 63.936024][ T5064] ? __vm_area_free+0x42/0x110 [ 63.940788][ T5064] ? __pfx___might_resched+0x10/0x10 [ 63.946075][ T5064] ? free_unref_page+0x18e/0x3f0 [ 63.951006][ T5064] ? __vm_area_free+0x42/0x110 [ 63.955785][ T5064] kfree+0x28e/0x380 [ 63.959683][ T5064] __vm_area_free+0x42/0x110 [ 63.964271][ T5064] exit_mmap+0x6a9/0xd40 [ 63.968515][ T5064] ? __pfx_exit_mmap+0x10/0x10 [ 63.973275][ T5064] ? __asan_memset+0x23/0x50 [ 63.977870][ T5064] ? uprobe_clear_state+0x277/0x290 [ 63.983061][ T5064] ? mm_update_next_owner+0x53b/0x660 [ 63.988434][ T5064] __mmput+0x115/0x3c0 [ 63.992502][ T5064] exit_mm+0x21f/0x310 [ 63.996570][ T5064] ? __pfx_exit_mm+0x10/0x10 [ 64.001155][ T5064] ? taskstats_exit+0x439/0xa00 [ 64.006004][ T5064] ? tty_audit_exit+0x154/0x200 [ 64.010870][ T5064] do_exit+0x9af/0x2740 [ 64.015030][ T5064] ? __pfx_do_exit+0x10/0x10 [ 64.019623][ T5064] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 64.025607][ T5064] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 64.031945][ T5064] ? _raw_spin_unlock_irq+0x23/0x50 [ 64.037574][ T5064] ? lockdep_hardirqs_on+0x98/0x140 [ 64.042776][ T5064] do_group_exit+0x206/0x2c0 [ 64.047371][ T5064] __x64_sys_exit_group+0x3f/0x40 [ 64.052481][ T5064] do_syscall_64+0xf9/0x240 [ 64.057101][ T5064] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 64.063010][ T5064] RIP: 0033:0x7fddca0c0c89 [ 64.067422][ T5064] Code: Unable to access opcode bytes at 0x7fddca0c0c5f. [ 64.074430][ T5064] RSP: 002b:00007fff7476ad38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 64.082922][ T5064] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fddca0c0c89 [ 64.090972][ T5064] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 64.098948][ T5064] RBP: 00007fddca13b290 R08: ffffffffffffffb8 R09: 0000000000000006 [ 64.106912][ T5064] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fddca13b290 [ 64.115137][ T5064] R13: 0000000000000000 R14: 00007fddca13bce0 R15: 00007fddca091ec0 [ 64.123376][ T5064] [ 64.126385][ T5064] Modules linked in: [ 64.130272][ T5064] CR2: ffffffffff600000 [ 64.134413][ T5064] ---[ end trace 0000000000000000 ]--- [ 64.139859][ T5064] RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1d0 [ 64.146476][ T5064] 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 [ 64.166108][ T5064] RSP: 0018:ffffc90003b5f888 EFLAGS: 00010246 [ 64.172170][ T5064] RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff88801871d940 [ 64.180308][ T5064] RDX: ffffc90003b5f900 RSI: ffffffffff600000 RDI: ffffffffff600000 [ 64.188278][ T5064] RBP: dffffc0000000000 R08: ffffffff8141da1d R09: 1ffffffff2591484 [ 64.196243][ T5064] R10: dffffc0000000000 R11: ffffffffa0001f90 R12: ffffffffff600000 [ 64.204209][ T5064] R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 [ 64.212214][ T5064] FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 64.221323][ T5064] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.227902][ T5064] CR2: ffffffffff600000 CR3: 000000000df32000 CR4: 00000000003506f0 [ 64.235869][ T5064] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.243834][ T5064] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.251974][ T5064] Kernel panic - not syncing: Fatal exception [ 64.258206][ T5064] Kernel Offset: disabled [ 64.262521][ T5064] Rebooting in 86400 seconds..