ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor3755408658 <...> Warning: Permanently added '10.128.0.42' (ED25519) to the list of known hosts. execve("ci2-android-5-10/syz-executor3755408658", ["ci2-android-5-10/syz-executor3755408658"], 0x7fffe2513500 /* 10 vars */) = 0 brk(NULL) = 0x55556a411000 brk(0x55556a411d40) = 0x55556a411d40 arch_prctl(ARCH_SET_FS, 0x55556a4113c0) = 0 set_tid_address(0x55556a411690) = 297 set_robust_list(0x55556a4116a0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-5-10/syz-executor3755408658", 4096) = 45 getrandom("\x0d\xda\x8b\xb4\x53\x60\x1b\x5f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556a411d40 brk(0x55556a432d40) = 0x55556a432d40 brk(0x55556a433000) = 0x55556a433000 mprotect(0x7fe129e78000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 unshare(CLONE_NEWPID) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556a411690) = 298 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-5-10/strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x55556a4116a0, 24) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 298] getppid() = 0 [pid 298] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 298] unshare(CLONE_NEWNS) = 0 [pid 298] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 298] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 298] unshare(CLONE_NEWCGROUP) = 0 [pid 298] unshare(CLONE_NEWUTS) = 0 [pid 298] unshare(CLONE_SYSVSEM) = 0 [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] getpid() = 1 [pid 298] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 25.781676][ T298] RSP: 002b:00007ffd80d359d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 25.790074][ T298] RAX: 0000000000000000 RBX: 000055556a4113c0 RCX: 00007fe129df7557 [ 25.798015][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 25.805957][ T298] RBP: 00007fe129e4d126 R08: 0000000000000000 R09: 0000000000000000 [ 25.813907][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fe129e4edf0 [ 25.821858][ T298] R13: 00007fe129e4d08e R14: 00007fe129e78bc0 R15: 0000000000000002 [ 25.829812][ T298] [ 25.832113][ T298] Allocated by task 298: [ 25.836349][ T298] __kasan_kmalloc+0xd4/0x100 [ 25.841002][ T298] __kmalloc+0x19f/0x330 [ 25.845216][ T298] l2tp_session_create+0x39/0xb60 [ 25.850211][ T298] pppol2tp_connect+0xbf5/0x1640 [ 25.855138][ T298] __sys_connect+0x3ce/0x450 [ 25.859698][ T298] __x64_sys_connect+0x7a/0x90 [ 25.864435][ T298] do_syscall_64+0x31/0x40 [ 25.868820][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.874692][ T298] [ 25.876992][ T298] Freed by task 298: [ 25.880860][ T298] kasan_set_track+0x4a/0x70 [ 25.885419][ T298] kasan_set_free_info+0x23/0x40 [ 25.890327][ T298] ____kasan_slab_free+0x125/0x160 [ 25.895404][ T298] __kasan_slab_free+0x11/0x20 [ 25.900136][ T298] slab_free_freelist_hook+0xc5/0x190 [ 25.905476][ T298] kfree+0xc0/0x270 [ 25.909253][ T298] l2tp_session_put+0xb2/0x1a0 [ 25.913986][ T298] l2tp_session_delete+0x3a9/0x4a0 [ 25.919066][ T298] pppol2tp_release+0x169/0x2b0 [ 25.923888][ T298] sock_close+0xb8/0x200 [ 25.928098][ T298] __fput+0x2dc/0x730 [ 25.932049][ T298] ____fput+0x15/0x20 [ 25.936001][ T298] task_work_run+0x127/0x190 [ 25.940561][ T298] ptrace_notify+0x230/0x270 [ 25.945135][ T298] syscall_exit_work+0x6e/0x140 [ 25.949958][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 25.955384][ T298] do_syscall_64+0x3d/0x40 [ 25.959772][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.965630][ T298] [ 25.967931][ T298] The buggy address belongs to the object at ffff88811e36c000 [ 25.967931][ T298] which belongs to the cache kmalloc-512 of size 512 [ 25.981953][ T298] The buggy address is located 336 bytes inside of [ 25.981953][ T298] 512-byte region [ffff88811e36c000, ffff88811e36c200) [ 25.995204][ T298] The buggy address belongs to the page: [ 26.000826][ T298] page:ffffea000478db00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e36c [ 26.011037][ T298] head:ffffea000478db00 order:2 compound_mapcount:0 compound_pincount:0 [ 26.019333][ T298] flags: 0x4000000000010200(slab|head) [ 26.024768][ T298] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 26.033322][ T298] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 26.041898][ T298] page dumped because: kasan: bad access detected [ 26.048287][ T298] page_owner tracks the page as allocated [ 26.053979][ T298] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 292, ts 25272459725, free_ts 19432284192 [ 26.072953][ T298] prep_new_page+0x176/0x190 [ 26.077512][ T298] get_page_from_freelist+0x225f/0x23f0 [ 26.083028][ T298] __alloc_pages_nodemask+0x29a/0x640 [ 26.088371][ T298] new_slab+0x84/0x3f0 [ 26.092414][ T298] ___slab_alloc+0x2f8/0x4c0 [ 26.096981][ T298] __slab_alloc+0x63/0xa0 [ 26.101283][ T298] __kmalloc_track_caller+0x1e4/0x310 [ 26.106630][ T298] __alloc_skb+0xdc/0x520 [ 26.110935][ T298] alloc_skb_with_frags+0xa3/0x560 [ 26.116015][ T298] sock_alloc_send_pskb+0x87f/0x9a0 [ 26.121184][ T298] unix_dgram_sendmsg+0x6f3/0x18f0 [ 26.126264][ T298] __sys_sendto+0x467/0x620 [ 26.130736][ T298] __x64_sys_sendto+0xe5/0x100 [ 26.135480][ T298] do_syscall_64+0x31/0x40 [ 26.139866][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.145723][ T298] page last free stack trace: [ 26.150376][ T298] free_unref_page_prepare+0x2b7/0x2d0 [ 26.155805][ T298] free_unref_page+0x7f/0x190 [ 26.160452][ T298] __put_page+0xae/0xe0 [ 26.164579][ T298] anon_pipe_buf_release+0x165/0x1f0 [ 26.169830][ T298] pipe_read+0x563/0x1050 [ 26.174148][ T298] vfs_read+0x62a/0xa50 [ 26.178281][ T298] ksys_read+0x14a/0x260 [ 26.182497][ T298] __x64_sys_read+0x7b/0x90 [ 26.186973][ T298] do_syscall_64+0x31/0x40 [ 26.191361][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.197218][ T298] [ 26.199516][ T298] Memory state around the buggy address: [ 26.205227][ T298] ffff88811e36c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.213257][ T298] ffff88811e36c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.221287][ T298] >ffff88811e36c100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.229315][ T298] ^ [ 26.235959][ T298] ffff88811e36c180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [pid 298] close(3) = 0 [pid 298] close(4) = 0 [pid 298] close(5) = -1 EBADF (Bad file descriptor) [pid 298] close(6) = -1 EBADF (Bad file descriptor) [pid 298] close(7) = -1 EBADF (Bad file descriptor) [pid 298] close(8) = -1 EBADF (Bad file descriptor) [pid 298] close(9) = -1 EBADF (Bad file descriptor) [pid 298] close(10) = -1 EBADF (Bad file descriptor) [pid 298] close(11) = -1 EBADF (Bad file descriptor) [pid 298] close(12) = -1 EBADF (Bad file descriptor) [pid 298] close(13) = -1 EBADF (Bad file descriptor) [pid 298] close(14) = -1 EBADF (Bad file descriptor) [pid 298] close(15) = -1 EBADF (Bad file descriptor) [pid 298] close(16) = -1 EBADF (Bad file descriptor) [pid 298] close(17) = -1 EBADF (Bad file descriptor) [pid 298] close(18) = -1 EBADF (Bad file descriptor) [pid 298] close(19) = -1 EBADF (Bad file descriptor) [pid 298] close(20) = -1 EBADF (Bad file descriptor) [pid 298] close(21) = -1 EBADF (Bad file descriptor) [pid 298] close(22) = -1 EBADF (Bad file descriptor) [pid 298] close(23) = -1 EBADF (Bad file descriptor) [pid 298] close(24) = -1 EBADF (Bad file descriptor) [pid 298] close(25) = -1 EBADF (Bad file descriptor) [pid 298] close(26) = -1 EBADF (Bad file descriptor) [pid 298] close(27) = -1 EBADF (Bad file descriptor) [pid 298] close(28) = -1 EBADF (Bad file descriptor) [pid 298] close(29) = -1 EBADF (Bad file descriptor) [pid 298] exit_group(1) = ? [pid 298] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=298, si_uid=0, si_status=1, si_utime=0, si_stime=10 /* 0.10 s */} --- exit_group(0) = ? +++ exited with 0 +++ [ 26.243988][ T298] ffff888