ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor1729079166 <...> Warning: Permanently added '10.128.0.46' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor1729079166", ["ci2-android-6-1/syz-executor1729079166"], 0x7fff3eb563f0 /* 10 vars */) = 0 brk(NULL) = 0x55555fa70000 brk(0x55555fa70d40) = 0x55555fa70d40 arch_prctl(ARCH_SET_FS, 0x55555fa703c0) = 0 set_tid_address(0x55555fa70690) = 305 set_robust_list(0x55555fa706a0, 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-6-1/syz-executor1729079166", 4096) = 44 getrandom("\x38\x02\x96\x87\x69\x12\xe1\xff", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555fa70d40 brk(0x55555fa91d40) = 0x55555fa91d40 brk(0x55555fa92000) = 0x55555fa92000 mprotect(0x7f3664273000, 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=0x55555fa70690) = 306 ci2-android-6-1/strace-static-x86_64: Process 306 attached [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] set_robust_list(0x55555fa706a0, 24) = 0 [pid 306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 306] getppid() = 0 [pid 306] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 306] unshare(CLONE_NEWNS) = 0 [pid 306] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 306] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 306] unshare(CLONE_NEWCGROUP) = 0 [pid 306] unshare(CLONE_NEWUTS) = 0 [pid 306] unshare(CLONE_SYSVSEM) = 0 [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] getpid() = 1 [pid 306] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 32.541027][ T306] __dump_stack+0x21/0x24 [ 32.544457][ T28] audit: type=1400 audit(1785697686.792:73): avc: denied { unmount } for pid=306 comm="syz-executor172" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 32.551134][ T306] dump_stack_lvl+0x110/0x170 [ 32.622026][ T306] ? __cfi_dump_stack_lvl+0x8/0x8 [ 32.627067][ T306] ? mutex_lock+0x86/0x1b0 [ 32.631497][ T306] print_address_description+0x71/0x200 [ 32.637046][ T306] print_report+0x4a/0x60 [ 32.641377][ T306] kasan_report+0x122/0x150 [ 32.645884][ T306] ? mutex_lock+0x86/0x1b0 [ 32.650312][ T306] kasan_check_range+0x249/0x2a0 [ 32.655254][ T306] __kasan_check_write+0x14/0x20 [ 32.660214][ T306] mutex_lock+0x86/0x1b0 [ 32.664494][ T306] ? __cfi_mutex_lock+0x10/0x10 [ 32.669366][ T306] ? kfree+0x6f/0xf0 [ 32.673256][ T306] ? l2tp_session_put+0xaf/0x1a0 [ 32.678195][ T306] ? l2tp_session_delete+0x3df/0x4d0 [ 32.683485][ T306] pppol2tp_release+0x178/0x2b0 [ 32.688345][ T306] sock_close+0xc9/0x220 [ 32.692602][ T306] ? __cfi_sock_close+0x10/0x10 [ 32.697458][ T306] __fput+0x1fd/0x8f0 [ 32.701462][ T306] ____fput+0x15/0x20 [ 32.705449][ T306] task_work_run+0x1e1/0x250 [ 32.710050][ T306] ? __cfi_task_work_run+0x10/0x10 [ 32.715188][ T306] ptrace_notify+0x23f/0x270 [ 32.719786][ T306] ? __cfi_task_work_add+0x10/0x10 [ 32.724921][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 32.730068][ T306] ? fput+0x15b/0x1a0 [ 32.734055][ T306] ? filp_close+0x111/0x160 [ 32.738562][ T306] syscall_exit_work+0x84/0x140 [ 32.743411][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 32.749568][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 32.754941][ T306] do_syscall_64+0x58/0xa0 [ 32.759385][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.764076][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.768753][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.774655][ T306] RIP: 0033:0x7f36641f2557 [ 32.779088][ T306] Code: 48 89 fa 4c 89 df e8 48 1f 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 32.798691][ T306] RSP: 002b:00007ffdb83c5860 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 32.807111][ T306] RAX: 0000000000000000 RBX: 000055555fa703c0 RCX: 00007f36641f2557 [ 32.815084][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 32.823083][ T306] RBP: 00007f3664248126 R08: 0000000000000000 R09: 0000000000000000 [ 32.831052][ T306] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f3664249df0 [ 32.839037][ T306] R13: 00007f366424808e R14: 00007f3664273bc0 R15: 0000000000000002 [ 32.847010][ T306] [ 32.850043][ T306] [ 32.852359][ T306] Allocated by task 306: [ 32.856591][ T306] kasan_set_track+0x4b/0x70 [ 32.861182][ T306] kasan_save_alloc_info+0x1f/0x30 [ 32.866290][ T306] __kasan_kmalloc+0x95/0xb0 [ 32.870879][ T306] __kmalloc+0xb4/0x1e0 [ 32.875029][ T306] l2tp_session_create+0x38/0xbd0 [ 32.880049][ T306] pppol2tp_connect+0xbf5/0x1640 [ 32.884983][ T306] __sys_connect+0x3da/0x460 [ 32.889573][ T306] __x64_sys_connect+0x7a/0x90 [ 32.894332][ T306] x64_sys_call+0x88d/0x9a0 [ 32.898833][ T306] do_syscall_64+0x4c/0xa0 [ 32.903248][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.909146][ T306] [ 32.911465][ T306] Freed by task 306: [ 32.915437][ T306] kasan_set_track+0x4b/0x70 [ 32.920026][ T306] kasan_save_free_info+0x2b/0x40 [ 32.925059][ T306] ____kasan_slab_free+0x132/0x180 [ 32.930191][ T306] __kasan_slab_free+0x11/0x20 [ 32.934961][ T306] slab_free_freelist_hook+0xc2/0x190 [ 32.940334][ T306] __kmem_cache_free+0xb7/0x1b0 [ 32.945185][ T306] kfree+0x6f/0xf0 [ 32.948902][ T306] l2tp_session_put+0xaf/0x1a0 [ 32.953672][ T306] l2tp_session_delete+0x3df/0x4d0 [ 32.958783][ T306] pppol2tp_release+0x169/0x2b0 [ 32.963635][ T306] sock_close+0xc9/0x220 [ 32.967883][ T306] __fput+0x1fd/0x8f0 [ 32.971873][ T306] ____fput+0x15/0x20 [ 32.975854][ T306] task_work_run+0x1e1/0x250 [ 32.980465][ T306] ptrace_notify+0x23f/0x270 [ 32.985058][ T306] syscall_exit_work+0x84/0x140 [ 32.989909][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 32.996067][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 33.001439][ T306] do_syscall_64+0x58/0xa0 [ 33.005877][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 33.011785][ T306] [ 33.014102][ T306] The buggy address belongs to the object at ffff88810dbc3c00 [ 33.014102][ T306] which belongs to the cache kmalloc-512 of size 512 [ 33.028145][ T306] The buggy address is located 336 bytes inside of [ 33.028145][ T306] 512-byte region [ffff88810dbc3c00, ffff88810dbc3e00) [ 33.041413][ T306] [ 33.043732][ T306] The buggy address belongs to the physical page: [ 33.050149][ T306] page:ffffea000436f000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10dbc0 [ 33.060389][ T306] head:ffffea000436f000 order:2 compound_mapcount:0 compound_pincount:0 [ 33.068709][ T306] flags: 0x4000000000010200(slab|head|zone=1) [ 33.074785][ T306] raw: 4000000000010200 ffffea00043c4500 dead000000000002 ffff888100042f00 [ 33.083384][ T306] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 33.092133][ T306] page dumped because: kasan: bad access detected [ 33.098540][ T306] page_owner tracks the page as allocated [ 33.104260][ T306] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2000(__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 2892624361, free_ts 2883936584 [ 33.123093][ T306] post_alloc_hook+0x1f5/0x210 [ 33.127884][ T306] prep_new_page+0x1c/0x110 [ 33.132405][ T306] get_page_from_freelist+0x2ca9/0x2d20 [ 33.137952][ T306] __alloc_pages+0x1fa/0x610 [ 33.142548][ T306] alloc_slab_page+0x6e/0xf0 [ 33.147138][ T306] new_slab+0x98/0x3e0 [ 33.151201][ T306] ___slab_alloc+0x70f/0xb70 [ 33.155792][ T306] __slab_alloc+0x5e/0xa0 [ 33.160146][ T306] __kmem_cache_alloc_node+0x204/0x2d0 [ 33.165614][ T306] kmalloc_trace+0x29/0xb0 [ 33.170027][ T306] usb_cache_string+0x66/0x130 [ 33.174786][ T306] usb_new_device+0x278/0x1500 [ 33.179550][ T306] register_root_hub+0x246/0x460 [ 33.184505][ T306] usb_add_hcd+0xaa7/0xeb0 [ 33.188953][ T306] dummy_hcd_probe+0x14a/0x290 [ 33.193716][ T306] platform_probe+0x16d/0x1f0 [ 33.198390][ T306] page last free stack trace: [ 33.203056][ T306] free_unref_page_prepare+0x80c/0x820 [ 33.208572][ T306] free_unref_page+0x93/0x530 [ 33.213267][ T306] __free_pages+0x67/0x100 [ 33.217684][ T306] free_pages+0x82/0x90 [ 33.221841][ T306] __stack_depot_save+0x45f/0x490 [ 33.226868][ T306] kasan_set_track+0x60/0x70 [ 33.231482][ T306] kasan_save_alloc_info+0x1f/0x30 [ 33.236611][ T306] __kasan_kmalloc+0x95/0xb0 [ 33.241207][ T306] __kmalloc_node_track_caller+0xb1/0x1e0 [ 33.246921][ T306] kstrdup_const+0x5a/0xa0 [ 33.251330][ T306] __kernfs_new_node+0xa6/0x670 [ 33.256177][ T306] kernfs_new_node+0x150/0x260 [ 33.260940][ T306] kernfs_create_dir_ns+0x47/0x130 [ 33.266044][ T306] sysfs_create_dir_ns+0x128/0x290 [ 33.271156][ T306] kobject_add_internal+0x718/0xc20 [ 33.276370][ T306] kobject_add+0x165/0x230 [ 33.280796][ T306] [ 33.283111][ T306] Memory state around the buggy address: [ 33.288731][ T306] ffff88810dbc3c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.296792][ T306] ffff88810dbc3c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.304876][ T306] >ffff88810dbc3d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.312931][ T306] ^ [pid 306] close(3) = 0 [pid 306] close(4) = 0 [pid 306] close(5) = -1 EBADF (Bad file descriptor) [pid 306] close(6) = -1 EBADF (Bad file descriptor) [pid 306] close(7) = -1 EBADF (Bad file descriptor) [pid 306] close(8) = -1 EBADF (Bad file descriptor) [pid 306] close(9) = -1 EBADF (Bad file descriptor) [pid 306] close(10) = -1 EBADF (Bad file descriptor) [pid 306] close(11) = -1 EBADF (Bad file descriptor) [pid 306] close(12) = -1 EBADF (Bad file descriptor) [pid 306] close(13) = -1 EBADF (Bad file descriptor) [pid 306] close(14) = -1 EBADF (Bad file descriptor) [pid 306] close(15) = -1 EBADF (Bad file descriptor) [pid 306] close(16) = -1 EBADF (Bad file descriptor) [pid 306] close(17) = -1 EBADF (Bad file descriptor) [pid 306] close(18) = -1 EBADF (Bad file descriptor) [pid 306] close(19) = -1 EBADF (Bad file descriptor) [pid 306] close(20) = -1 EBADF (Bad file descriptor) [pid 306] close(21) = -1 EBADF (Bad file descriptor) [pid 306] close(22) = -1 EBADF (Bad file descriptor) [pid 306] close(23) = -1 EBADF (Bad file descriptor) [pid 306] close(24) = -1 EBADF (Bad file descriptor) [pid 306] close(25) = -1 EBADF (Bad file descriptor) [pid 306] close(26) = -1 EBADF (Bad file descriptor) [pid 306] close(27) = -1 EBADF (Bad file descriptor) [pid 306] close(28) = -1 EBADF (Bad file descriptor) [pid 306] close(29) = -1 EBADF (Bad file descriptor) [pid 306] exit_group(1) = ? [pid 306] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=306, si_uid=0, si_status=1, si_utime=0, si_stime=9 /* 0.09 s */} --- exit_group(0) = ? +++ exited with 0 +++ [ 33.319637][ T306] ffff88810dbc3d80: fb fb fb fb f