./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3104421058 <...> Warning: Permanently added '10.128.0.134' (ED25519) to the list of known hosts. execve("./syz-executor3104421058", ["./syz-executor3104421058"], 0x7ffc4ea44ac0 /* 10 vars */) = 0 brk(NULL) = 0x555555e38000 brk(0x555555e38d00) = 0x555555e38d00 arch_prctl(ARCH_SET_FS, 0x555555e38380) = 0 set_tid_address(0x555555e38650) = 5064 set_robust_list(0x555555e38660, 24) = 0 rseq(0x555555e38ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3104421058", 4096) = 28 getrandom("\x01\x07\x2b\x9c\xe6\x10\xb7\x30", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555e38d00 brk(0x555555e59d00) = 0x555555e59d00 brk(0x555555e5a000) = 0x555555e5a000 mprotect(0x7f40cf6ce000, 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=0x555555e38650) = 5065 ./strace-static-x86_64: Process 5065 attached [pid 5065] set_robust_list(0x555555e38660, 24) = 0 [pid 5065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5065] setpgid(0, 0) = 0 [pid 5065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "1000", 4) = 4 [pid 5065] close(3) = 0 [pid 5065] 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 5065] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="kfree", prog_fd=3}}, 16) = 4 [pid 5065] exit_group(0) = ? [ 58.503088][ T5065] BUG: unable to handle page fault for address: ffffffffff600000 [ 58.510853][ T5065] #PF: supervisor read access in kernel mode [ 58.516820][ T5065] #PF: error_code(0x0000) - not-present page [ 58.522780][ T5065] PGD df36067 P4D df36067 PUD df38067 PMD df5b067 PTE 0 [ 58.529716][ T5065] Oops: 0000 [#1] PREEMPT SMP KASAN PTI [ 58.535346][ T5065] CPU: 0 PID: 5065 Comm: syz-executor310 Not tainted 6.8.0-rc1-syzkaller-00195-g577e4432f3ac #0 [ 58.545761][ T5065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 58.555815][ T5065] RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1d0 [ 58.562410][ T5065] 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 [ 58.582015][ T5065] RSP: 0018:ffffc900039af888 EFLAGS: 00010246 [ 58.588075][ T5065] RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff888024359dc0 [ 58.596068][ T5065] RDX: ffffc900039af900 RSI: ffffffffff600000 RDI: ffffffffff600000 [ 58.604042][ T5065] RBP: dffffc0000000000 R08: ffffffff8141da1d R09: 1ffffffff2590c84 [ 58.612013][ T5065] R10: dffffc0000000000 R11: ffffffffa0000658 R12: ffffffffff600000 [ 58.620001][ T5065] R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 [ 58.627988][ T5065] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 58.636913][ T5065] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.643488][ T5065] CR2: ffffffffff600000 CR3: 000000000df32000 CR4: 00000000003506f0 [ 58.651450][ T5065] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.659414][ T5065] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.667371][ T5065] Call Trace: [ 58.670636][ T5065] [ 58.673566][ T5065] ? __die_body+0x8b/0xe0 [ 58.677909][ T5065] ? 0xffffffffff600000 [ 58.682046][ T5065] ? page_fault_oops+0x806/0xaa0 [ 58.686976][ T5065] ? 0xffffffffff600000 [ 58.691113][ T5065] ? __pfx_page_fault_oops+0x10/0x10 [ 58.696385][ T5065] ? mark_lock+0x9a/0x350 [ 58.700700][ T5065] ? __lock_acquire+0x1345/0x1fd0 [ 58.705716][ T5065] ? rcu_is_watching+0x15/0xb0 [ 58.710476][ T5065] ? 0xffffffffff600000 [ 58.714611][ T5065] ? exc_page_fault+0x5de/0x870 [ 58.719460][ T5065] ? 0xffffffffff600000 [ 58.723596][ T5065] ? asm_exc_page_fault+0x26/0x30 [ 58.728604][ T5065] ? 0xffffffffff600000 [ 58.732739][ T5065] ? 0xffffffffff600000 [ 58.736878][ T5065] ? 0xffffffffff600000 [ 58.741036][ T5065] ? 0xffffffffa0000658 [ 58.745193][ T5065] ? copy_from_kernel_nofault_allowed+0x8d/0x100 [ 58.751528][ T5065] ? 0xffffffffff600000 [ 58.755670][ T5065] ? 0xffffffffff600000 [ 58.759807][ T5065] ? strncpy_from_kernel_nofault+0x8d/0x1d0 [ 58.765708][ T5065] ? strncpy_from_kernel_nofault+0x43/0x1d0 [ 58.771603][ T5065] ? 0xffffffffff600000 [ 58.775750][ T5065] bpf_probe_read_kernel_str+0x2a/0x70 [ 58.781207][ T5065] bpf_prog_ef3a4661c9d1378e+0x4a/0x4c [ 58.786653][ T5065] bpf_trace_run2+0x204/0x420 [ 58.791320][ T5065] ? bpf_trace_run2+0x114/0x420 [ 58.796154][ T5065] ? __pfx_bpf_trace_run2+0x10/0x10 [ 58.801339][ T5065] ? __vm_area_free+0x42/0x110 [ 58.806092][ T5065] ? __pfx___might_resched+0x10/0x10 [ 58.811364][ T5065] ? free_unref_page+0x18e/0x3f0 [ 58.816288][ T5065] ? __vm_area_free+0x42/0x110 [ 58.821039][ T5065] kfree+0x28e/0x380 [ 58.824922][ T5065] __vm_area_free+0x42/0x110 [ 58.829499][ T5065] exit_mmap+0x6a9/0xd40 [ 58.833733][ T5065] ? __pfx_exit_mmap+0x10/0x10 [ 58.838483][ T5065] ? __asan_memset+0x23/0x50 [ 58.843066][ T5065] ? uprobe_clear_state+0x277/0x290 [ 58.848277][ T5065] ? mm_update_next_owner+0x53b/0x660 [ 58.853657][ T5065] __mmput+0x115/0x3c0 [ 58.857726][ T5065] exit_mm+0x21f/0x310 [ 58.861791][ T5065] ? __pfx_exit_mm+0x10/0x10 [ 58.866386][ T5065] ? taskstats_exit+0x439/0xa00 [ 58.871239][ T5065] ? tty_audit_exit+0x154/0x200 [ 58.876103][ T5065] do_exit+0x9af/0x2740 [ 58.880266][ T5065] ? __pfx_do_exit+0x10/0x10 [ 58.884850][ T5065] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 58.890834][ T5065] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 58.897156][ T5065] ? _raw_spin_unlock_irq+0x23/0x50 [ 58.903013][ T5065] ? lockdep_hardirqs_on+0x98/0x140 [ 58.908207][ T5065] do_group_exit+0x206/0x2c0 [ 58.912790][ T5065] __x64_sys_exit_group+0x3f/0x40 [ 58.917805][ T5065] do_syscall_64+0xf9/0x240 [ 58.922299][ T5065] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 58.928183][ T5065] RIP: 0033:0x7f40cf659c89 [ 58.932671][ T5065] Code: Unable to access opcode bytes at 0x7f40cf659c5f. [ 58.939675][ T5065] RSP: 002b:00007ffd833d35e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 58.948078][ T5065] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f40cf659c89 [ 58.956040][ T5065] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 58.963998][ T5065] RBP: 00007f40cf6d4290 R08: ffffffffffffffb8 R09: 0000000000000006 [ 58.971957][ T5065] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f40cf6d4290 [ 58.979947][ T5065] R13: 0000000000000000 R14: 00007f40cf6d4ce0 R15: 00007f40cf62aec0 [ 58.987923][ T5065] [ 58.990933][ T5065] Modules linked in: [ 58.994839][ T5065] CR2: ffffffffff600000 [ 58.998997][ T5065] ---[ end trace 0000000000000000 ]--- [ 59.004460][ T5065] RIP: 0010:strncpy_from_kernel_nofault+0x8d/0x1d0 [ 59.010971][ T5065] 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 [ 59.030679][ T5065] RSP: 0018:ffffc900039af888 EFLAGS: 00010246 [ 59.036740][ T5065] RAX: 0000000000000000 RBX: ffffffffff600000 RCX: ffff888024359dc0 [ 59.044700][ T5065] RDX: ffffc900039af900 RSI: ffffffffff600000 RDI: ffffffffff600000 [ 59.052679][ T5065] RBP: dffffc0000000000 R08: ffffffff8141da1d R09: 1ffffffff2590c84 [ 59.060642][ T5065] R10: dffffc0000000000 R11: ffffffffa0000658 R12: ffffffffff600000 [ 59.068607][ T5065] R13: 0000000000000005 R14: 0000000000000000 R15: ffffffffff600000 [ 59.076566][ T5065] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 59.085481][ T5065] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.092060][ T5065] CR2: ffffffffff600000 CR3: 000000000df32000 CR4: 00000000003506f0 [ 59.100043][ T5065] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.108023][ T5065] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.116081][ T5065] Kernel panic - not syncing: Fatal exception [ 59.122391][ T5065] Kernel Offset: disabled [ 59.126787][ T5065] Rebooting in 86400 seconds..