./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor615646574 <...> Warning: Permanently added '10.128.1.165' (ED25519) to the list of known hosts. execve("./syz-executor615646574", ["./syz-executor615646574"], 0x7ffd1df8a850 /* 10 vars */) = 0 brk(NULL) = 0x555558bd4000 brk(0x555558bd4d40) = 0x555558bd4d40 arch_prctl(ARCH_SET_FS, 0x555558bd43c0) = 0 set_tid_address(0x555558bd4690) = 5868 set_robust_list(0x555558bd46a0, 24) = 0 rseq(0x555558bd4ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor615646574", 4096) = 27 getrandom("\x13\xd9\xb1\x05\x7d\xda\x03\xfd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555558bd4d40 brk(0x555558bf5d40) = 0x555558bf5d40 brk(0x555558bf6000) = 0x555558bf6000 mprotect(0x7f1ac2a97000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5869 attached , child_tidptr=0x555558bd4690) = 5869 [pid 5869] set_robust_list(0x555558bd46a0, 24) = 0 [pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5869] getppid() = 0 [pid 5869] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5869] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5869] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5869] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5869] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5869] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5869] unshare(CLONE_NEWNS) = 0 [pid 5869] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5869] unshare(CLONE_NEWIPC) = 0 [pid 5869] unshare(CLONE_NEWCGROUP) = 0 [pid 5869] unshare(CLONE_NEWUTS) = 0 [pid 5869] unshare(CLONE_SYSVSEM) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "16777216", 8) = 8 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "536870912", 9) = 9 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1024", 4) = 4 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "8192", 4) = 4 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1024", 4) = 4 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1024", 4) = 4 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5869] close(3) = 0 [pid 5869] getpid() = 1 [pid 5869] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5873] rseq(0x7f1ac29cdfe0, 0x20, 0, 0x53053053) = 0 [pid 5873] set_robust_list(0x7f1ac29cd9a0, 24) = 0 [pid 5872] <... clone3 resumed> => {parent_tid=[3]}, 88) = 3 [pid 5873] rt_sigprocmask(SIG_SETMASK, [], [pid 5872] rt_sigprocmask(SIG_SETMASK, [], [pid 5873] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5872] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5873] futex(0x7f1ac2a9d408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=550000000} [pid 5873] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name=NULL, prog_fd=-1}}, 16) = -1 EBADF (Bad file descriptor) [pid 5873] futex(0x7f1ac2a9d40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5872] <... futex resumed>) = 0 [pid 5873] pipe( [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5873] <... pipe resumed>[3, 4]) = 0 [pid 5872] <... futex resumed>) = 0 [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5873] futex(0x7f1ac2a9d40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5872] <... futex resumed>) = 0 [pid 5873] futex(0x7f1ac2a9d408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5872] <... futex resumed>) = 0 [pid 5873] socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 5 [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5873] futex(0x7f1ac2a9d40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5873] futex(0x7f1ac2a9d408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5872] <... futex resumed>) = 0 [pid 5873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5873] close(5 [pid 5872] <... futex resumed>) = 0 [pid 5873] <... close resumed>) = 0 [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5873] futex(0x7f1ac2a9d40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5872] <... futex resumed>) = 0 [pid 5873] futex(0x7f1ac2a9d408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5872] <... futex resumed>) = 0 [pid 5873] socket(AF_INET, SOCK_DGRAM, IPPROTO_IP [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5873] <... socket resumed>) = 5 [pid 5873] futex(0x7f1ac2a9d40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5873] futex(0x7f1ac2a9d408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5872] <... futex resumed>) = 0 [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5872] <... futex resumed>) = 0 [pid 5873] bind(5, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("172.20.20.170")}, 16 [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5873] <... bind resumed>) = 0 [pid 5873] futex(0x7f1ac2a9d40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5872] <... futex resumed>) = 0 [pid 5873] futex(0x7f1ac2a9d408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5873] sendmmsg(5, [{msg_hdr={msg_name={sa_family=AF_INET, sin_port=htons(20000), sin_addr=inet_addr("224.0.0.1")}, msg_namelen=16, msg_iov=NULL, msg_iovlen=0, msg_control=[{cmsg_len=112, cmsg_level=0xffffffff /* SOL_??? */, cmsg_type=0}], msg_controllen=112, msg_flags=0}, msg_len=0}], 1, MSG_DONTROUTE|MSG_DONTWAIT|MSG_NOSIGNAL|MSG_MORE|MSG_FASTOPEN) = 1 [pid 5873] futex(0x7f1ac2a9d40c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5872] <... futex resumed>) = 0 [pid 5873] futex(0x7f1ac2a9d408, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5872] futex(0x7f1ac2a9d408, FUTEX_WAKE_PRIVATE, 1000000 [pid 5873] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4294966988 [pid 5872] <... futex resumed>) = 0 [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5872] futex(0x7f1ac2a9d40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 5872] futex(0x7f1ac2a9d41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1ac298c000 [pid 5872] mprotect(0x7f1ac298d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5872] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5872] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1ac29ac990, parent_tid=0x7f1ac29ac990, exit_signal=0, stack=0x7f1ac298c000, stack_size=0x20300, tls=0x7f1ac29ac6c0}./strace-static-x86_64: Process 5874 attached [pid 5874] rseq(0x7f1ac29acfe0, 0x20, 0, 0x53053053) = 0 [pid 5874] set_robust_list(0x7f1ac29ac9a0, 24 [pid 5872] <... clone3 resumed> => {parent_tid=[4]}, 88) = 4 [pid 5874] <... set_robust_list resumed>) = 0 [pid 5872] rt_sigprocmask(SIG_SETMASK, [], [pid 5874] rt_sigprocmask(SIG_SETMASK, [], [pid 5872] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5874] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5872] futex(0x7f1ac2a9d418, FUTEX_WAKE_PRIVATE, 1000000 [pid 5874] splice(3, NULL, 5, NULL, 29009, 0 [pid 5872] <... futex resumed>) = 0 [ 142.546081][ T5874] ================================================================== [ 142.554256][ T5874] BUG: KASAN: slab-out-of-bounds in skb_copy_and_csum_bits+0x433/0x9c0 [ 142.562528][ T5874] Write of size 1144 at addr ffff88807703c324 by task syz-executor615/5874 [ 142.571128][ T5874] [ 142.573466][ T5874] CPU: 1 UID: 0 PID: 5874 Comm: syz-executor615 Not tainted 6.12.0-rc5-next-20241031-syzkaller #0 [ 142.584061][ T5874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 142.594139][ T5874] Call Trace: [ 142.597458][ T5874] [ 142.600445][ T5874] dump_stack_lvl+0x241/0x360 [ 142.605149][ T5874] ? __pfx_dump_stack_lvl+0x10/0x10 [ 142.610366][ T5874] ? __pfx__printk+0x10/0x10 [ 142.614974][ T5874] ? _printk+0xd5/0x120 [ 142.619153][ T5874] ? __virt_addr_valid+0x183/0x530 [ 142.624275][ T5874] ? __virt_addr_valid+0x183/0x530 [ 142.629481][ T5874] print_report+0x169/0x550 [ 142.633994][ T5874] ? __virt_addr_valid+0x183/0x530 [ 142.639119][ T5874] ? __virt_addr_valid+0x183/0x530 [ 142.644236][ T5874] ? __virt_addr_valid+0x45f/0x530 [ 142.649378][ T5874] ? __phys_addr+0xba/0x170 [ 142.653902][ T5874] ? skb_copy_and_csum_bits+0x433/0x9c0 [ 142.659457][ T5874] kasan_report+0x143/0x180 [ 142.663965][ T5874] ? skb_copy_and_csum_bits+0x433/0x9c0 [ 142.669517][ T5874] kasan_check_range+0x282/0x290 [ 142.674460][ T5874] ? skb_copy_and_csum_bits+0x433/0x9c0 [ 142.680013][ T5874] __asan_memcpy+0x40/0x70 [ 142.684440][ T5874] skb_copy_and_csum_bits+0x433/0x9c0 [ 142.689821][ T5874] __ip_append_data+0x2fc1/0x40f0 [ 142.694874][ T5874] ? __pfx_ip_generic_getfrag+0x10/0x10 [ 142.700437][ T5874] ? __pfx___ip_append_data+0x10/0x10 [ 142.705841][ T5874] ? lockdep_hardirqs_on+0x99/0x150 [ 142.711062][ T5874] ip_append_data+0x14c/0x190 [ 142.715749][ T5874] ? __pfx_ip_generic_getfrag+0x10/0x10 [ 142.721305][ T5874] udp_sendmsg+0x52c/0x2a50 [ 142.725820][ T5874] ? validate_chain+0x11e/0x5920 [ 142.730777][ T5874] ? __pfx_ip_generic_getfrag+0x10/0x10 [ 142.736335][ T5874] ? __pfx_udp_sendmsg+0x10/0x10 [ 142.741292][ T5874] ? __mutex_trylock_common+0x183/0x2e0 [ 142.746869][ T5874] ? __pfx_aa_sk_perm+0x10/0x10 [ 142.751746][ T5874] ? sock_rps_record_flow+0x1a/0x400 [ 142.757043][ T5874] ? inet_sendmsg+0x2ba/0x390 [ 142.761733][ T5874] __sock_sendmsg+0x1a6/0x270 [ 142.766437][ T5874] sock_sendmsg+0x134/0x200 [ 142.770944][ T5874] ? __pfx_sock_sendmsg+0x10/0x10 [ 142.776006][ T5874] ? iov_iter_bvec+0x4e/0x180 [ 142.780695][ T5874] splice_to_socket+0xa10/0x10b0 [ 142.785818][ T5874] ? __pfx_lock_release+0x10/0x10 [ 142.790870][ T5874] ? __pfx_splice_to_socket+0x10/0x10 [ 142.796265][ T5874] ? __lock_acquire+0x1397/0x2100 [ 142.801324][ T5874] ? bpf_lsm_file_permission+0x9/0x10 [ 142.806737][ T5874] ? security_file_permission+0x74/0x280 [ 142.812407][ T5874] ? rw_verify_area+0x1c3/0x6f0 [ 142.817279][ T5874] ? __pfx_splice_to_socket+0x10/0x10 [ 142.822773][ T5874] do_splice+0xd68/0x18e0 [ 142.827144][ T5874] ? __pfx_lock_release+0x10/0x10 [ 142.832204][ T5874] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 142.838224][ T5874] ? pipe_clear_nowait+0x196/0x220 [ 142.843346][ T5874] ? __pfx_do_splice+0x10/0x10 [ 142.848132][ T5874] ? __fget_files+0x2a/0x410 [ 142.852737][ T5874] __se_sys_splice+0x331/0x4a0 [ 142.857524][ T5874] ? __pfx_ptrace_notify+0x10/0x10 [ 142.862662][ T5874] ? __pfx___se_sys_splice+0x10/0x10 [ 142.867980][ T5874] ? do_syscall_64+0x100/0x230 [ 142.872765][ T5874] ? __x64_sys_splice+0x21/0xf0 [ 142.877635][ T5874] do_syscall_64+0xf3/0x230 [ 142.882242][ T5874] ? clear_bhb_loop+0x35/0x90 [ 142.886926][ T5874] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 142.892937][ T5874] RIP: 0033:0x7f1ac2a135e9 [ 142.897363][ T5874] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 [ 142.916999][ T5874] RSP: 002b:00007f1ac29ac218 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 142.925433][ T5874] RAX: ffffffffffffffda RBX: 00007f1ac2a9d418 RCX: 00007f1ac2a135e9 [ 142.933414][ T5874] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 142.941398][ T5874] RBP: 00007f1ac2a9d410 R08: 0000000000007151 R09: 0000000000000000 [ 142.949385][ T5874] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1ac2a9d41c [ 142.957367][ T5874] R13: 00007f1ac2a6a44c R14: 00000000fffffecc R15: 00007ffc234fced8 [ 142.965353][ T5874] [ 142.968377][ T5874] [ 142.970726][ T5874] Allocated by task 5874: [ 142.975084][ T5874] kasan_save_track+0x3f/0x80 [ 142.979801][ T5874] __kasan_slab_alloc+0x66/0x80 [ 142.984692][ T5874] kmem_cache_alloc_node_noprof+0x1d9/0x380 [ 142.990610][ T5874] kmalloc_reserve+0xa8/0x2a0 [ 142.995303][ T5874] __alloc_skb+0x1f3/0x440 [ 142.999733][ T5874] __ip_append_data+0x2da7/0x40f0 [ 143.004764][ T5874] ip_append_data+0x14c/0x190 [ 143.009450][ T5874] udp_sendmsg+0x52c/0x2a50 [ 143.013963][ T5874] __sock_sendmsg+0x1a6/0x270 [ 143.018643][ T5874] sock_sendmsg+0x134/0x200 [ 143.023149][ T5874] splice_to_socket+0xa10/0x10b0 [ 143.028101][ T5874] do_splice+0xd68/0x18e0 [ 143.032442][ T5874] __se_sys_splice+0x331/0x4a0 [ 143.037223][ T5874] do_syscall_64+0xf3/0x230 [ 143.041748][ T5874] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 143.047655][ T5874] [ 143.049981][ T5874] The buggy address belongs to the object at ffff88807703c300 [ 143.049981][ T5874] which belongs to the cache skbuff_small_head of size 640 [ 143.064557][ T5874] The buggy address is located 36 bytes inside of [ 143.064557][ T5874] allocated 640-byte region [ffff88807703c300, ffff88807703c580) [ 143.078639][ T5874] [ 143.080975][ T5874] The buggy address belongs to the physical page: [ 143.087400][ T5874] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7703c [ 143.096178][ T5874] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 143.104684][ T5874] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) [ 143.112244][ T5874] page_type: f5(slab) [ 143.116233][ T5874] raw: 00fff00000000040 ffff88801ea8ea00 dead000000000122 0000000000000000 [ 143.124819][ T5874] raw: 0000000000000000 0000000080150015 00000001f5000000 0000000000000000 [ 143.133407][ T5874] head: 00fff00000000040 ffff88801ea8ea00 dead000000000122 0000000000000000 [ 143.142167][ T5874] head: 0000000000000000 0000000080150015 00000001f5000000 0000000000000000 [ 143.150863][ T5874] head: 00fff00000000002 ffffea0001dc0f01 ffffffffffffffff 0000000000000000 [ 143.159546][ T5874] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 [ 143.168217][ T5874] page dumped because: kasan: bad access detected [ 143.174646][ T5874] page_owner tracks the page as allocated [ 143.180359][ T5874] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5874, tgid 5872 (syz-executor615), ts 142545840878, free_ts 134222079251 [ 143.202161][ T5874] post_alloc_hook+0x1f3/0x230 [ 143.206937][ T5874] get_page_from_freelist+0x3725/0x3870 [ 143.212497][ T5874] __alloc_pages_noprof+0x292/0x710 [ 143.217708][ T5874] alloc_pages_mpol_noprof+0x3e8/0x680 [ 143.223170][ T5874] alloc_slab_page+0x6a/0x140 [ 143.227857][ T5874] allocate_slab+0x5a/0x2f0 [ 143.232374][ T5874] ___slab_alloc+0xcd1/0x14b0 [ 143.237062][ T5874] __slab_alloc+0x58/0xa0 [ 143.241400][ T5874] kmem_cache_alloc_node_noprof+0x269/0x380 [ 143.247303][ T5874] kmalloc_reserve+0xa8/0x2a0 [ 143.251992][ T5874] __alloc_skb+0x1f3/0x440 [ 143.256415][ T5874] __ip_append_data+0x2da7/0x40f0 [ 143.261448][ T5874] ip_append_data+0x14c/0x190 [ 143.266131][ T5874] udp_sendmsg+0x52c/0x2a50 [ 143.270639][ T5874] __sock_sendmsg+0x1a6/0x270 [ 143.275319][ T5874] sock_sendmsg+0x134/0x200 [ 143.279824][ T5874] page last free pid 5859 tgid 5859 stack trace: [ 143.286150][ T5874] free_unref_page+0xcfb/0xf20 [ 143.290928][ T5874] __folio_put+0x2c7/0x440 [ 143.295350][ T5874] pipe_read+0x6ed/0x13e0 [ 143.299686][ T5874] vfs_read+0x991/0xb70 [ 143.303854][ T5874] ksys_read+0x183/0x2b0 [ 143.308107][ T5874] do_syscall_64+0xf3/0x230 [ 143.312635][ T5874] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 143.318546][ T5874] [ 143.320875][ T5874] Memory state around the buggy address: [ 143.326527][ T5874] ffff88807703c480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 143.334598][ T5874] ffff88807703c500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [pid 5872] futex(0x7f1ac2a9d41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [ 143.342668][ T5874] >ffff88807703c580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 143.350736][ T5874] ^ [ 143.354891][ T5874] ffff88807703c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 143.362974][ T5874] ffff88807703c680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 143.371054][ T5874] ================================================================== [ 143.379328][ T5874] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 143.386559][ T5874] CPU: 1 UID: 0 PID: 5874 Comm: syz-executor615 Not tainted 6.12.0-rc5-next-20241031-syzkaller #0 [ 143.397179][ T5874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 143.407269][ T5874] Call Trace: [ 143.410559][ T5874] [ 143.413498][ T5874] dump_stack_lvl+0x241/0x360 [ 143.418203][ T5874] ? __pfx_dump_stack_lvl+0x10/0x10 [ 143.423435][ T5874] ? __pfx__printk+0x10/0x10 [ 143.428106][ T5874] ? vscnprintf+0x5d/0x90 [ 143.432459][ T5874] panic+0x349/0x880 [ 143.436378][ T5874] ? check_panic_on_warn+0x21/0xb0 [ 143.441517][ T5874] ? __pfx_panic+0x10/0x10 [ 143.445967][ T5874] ? mark_lock+0x9a/0x360 [ 143.450318][ T5874] ? _raw_spin_unlock_irqrestore+0xd8/0x140 [ 143.456241][ T5874] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 143.462173][ T5874] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 143.468543][ T5874] ? print_report+0x502/0x550 [ 143.473257][ T5874] check_panic_on_warn+0x86/0xb0 [ 143.478221][ T5874] ? skb_copy_and_csum_bits+0x433/0x9c0 [ 143.483794][ T5874] end_report+0x77/0x160 [ 143.488054][ T5874] kasan_report+0x154/0x180 [ 143.492591][ T5874] ? skb_copy_and_csum_bits+0x433/0x9c0 [ 143.498251][ T5874] kasan_check_range+0x282/0x290 [ 143.503202][ T5874] ? skb_copy_and_csum_bits+0x433/0x9c0 [ 143.508771][ T5874] __asan_memcpy+0x40/0x70 [ 143.513202][ T5874] skb_copy_and_csum_bits+0x433/0x9c0 [ 143.518587][ T5874] __ip_append_data+0x2fc1/0x40f0 [ 143.523634][ T5874] ? __pfx_ip_generic_getfrag+0x10/0x10 [ 143.529195][ T5874] ? __pfx___ip_append_data+0x10/0x10 [ 143.534582][ T5874] ? lockdep_hardirqs_on+0x99/0x150 [ 143.539799][ T5874] ip_append_data+0x14c/0x190 [ 143.544489][ T5874] ? __pfx_ip_generic_getfrag+0x10/0x10 [ 143.550073][ T5874] udp_sendmsg+0x52c/0x2a50 [ 143.554618][ T5874] ? validate_chain+0x11e/0x5920 [ 143.559595][ T5874] ? __pfx_ip_generic_getfrag+0x10/0x10 [ 143.565167][ T5874] ? __pfx_udp_sendmsg+0x10/0x10 [ 143.570131][ T5874] ? __mutex_trylock_common+0x183/0x2e0 [ 143.575689][ T5874] ? __pfx_aa_sk_perm+0x10/0x10 [ 143.580553][ T5874] ? sock_rps_record_flow+0x1a/0x400 [ 143.585859][ T5874] ? inet_sendmsg+0x2ba/0x390 [ 143.590573][ T5874] __sock_sendmsg+0x1a6/0x270 [ 143.595260][ T5874] sock_sendmsg+0x134/0x200 [ 143.599771][ T5874] ? __pfx_sock_sendmsg+0x10/0x10 [ 143.604808][ T5874] ? iov_iter_bvec+0x4e/0x180 [ 143.609502][ T5874] splice_to_socket+0xa10/0x10b0 [ 143.614467][ T5874] ? __pfx_lock_release+0x10/0x10 [ 143.619541][ T5874] ? __pfx_splice_to_socket+0x10/0x10 [ 143.624952][ T5874] ? __lock_acquire+0x1397/0x2100 [ 143.630017][ T5874] ? bpf_lsm_file_permission+0x9/0x10 [ 143.635421][ T5874] ? security_file_permission+0x74/0x280 [ 143.641099][ T5874] ? rw_verify_area+0x1c3/0x6f0 [ 143.645968][ T5874] ? __pfx_splice_to_socket+0x10/0x10 [ 143.651384][ T5874] do_splice+0xd68/0x18e0 [ 143.655763][ T5874] ? __pfx_lock_release+0x10/0x10 [ 143.660807][ T5874] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 143.666806][ T5874] ? pipe_clear_nowait+0x196/0x220 [ 143.671928][ T5874] ? __pfx_do_splice+0x10/0x10 [ 143.676708][ T5874] ? __fget_files+0x2a/0x410 [ 143.681310][ T5874] __se_sys_splice+0x331/0x4a0 [ 143.686091][ T5874] ? __pfx_ptrace_notify+0x10/0x10 [ 143.691216][ T5874] ? __pfx___se_sys_splice+0x10/0x10 [ 143.696522][ T5874] ? do_syscall_64+0x100/0x230 [ 143.701302][ T5874] ? __x64_sys_splice+0x21/0xf0 [ 143.706171][ T5874] do_syscall_64+0xf3/0x230 [ 143.710690][ T5874] ? clear_bhb_loop+0x35/0x90 [ 143.715372][ T5874] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 143.721277][ T5874] RIP: 0033:0x7f1ac2a135e9 [ 143.725701][ T5874] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 [ 143.745315][ T5874] RSP: 002b:00007f1ac29ac218 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 143.753744][ T5874] RAX: ffffffffffffffda RBX: 00007f1ac2a9d418 RCX: 00007f1ac2a135e9 [ 143.761751][ T5874] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 143.769729][ T5874] RBP: 00007f1ac2a9d410 R08: 0000000000007151 R09: 0000000000000000 [ 143.777705][ T5874] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1ac2a9d41c [ 143.785681][ T5874] R13: 00007f1ac2a6a44c R14: 00000000fffffecc R15: 00007ffc234fced8 [ 143.793668][ T5874] [ 143.796953][ T5874] Kernel Offset: disabled [ 143.801409][ T5874] Rebooting in 86400 seconds..