ci2-android-6-12-rust/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-12-rust/syz-executor413100002 <...> Warning: Permanently added '10.128.1.172' (ED25519) to the list of known hosts. execve("ci2-android-6-12-rust/syz-executor413100002", ["ci2-android-6-12-rust/syz-executor413100002"], 0x7fff8604cf30 /* 10 vars */) = 0 brk(NULL) = 0x55555c85b000 brk(0x55555c85bd40) = 0x55555c85bd40 arch_prctl(ARCH_SET_FS, 0x55555c85b3c0) = 0 set_tid_address(0x55555c85b690) = 313 set_robust_list(0x55555c85b6a0, 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-6-12-rust/syz-executor413100002", 4096) = 49 getrandom("\x4e\x42\xce\x24\x41\xb0\xcf\x51", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555c85bd40 brk(0x55555c87cd40) = 0x55555c87cd40 brk(0x55555c87d000) = 0x55555c87d000 mprotect(0x7f5f6b238000, 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 executing program write(1, "executing program\n", 18) = 18 mkdir("config", 0777) = 0 mount(NULL, "config", "configfs", 0, NULL) = 0 mkdir("config/usb_gadget/g1", 0777) = 0 mkdir("config/usb_gadget/g1/functions/uac2.usb0", 0777) = 0 openat(AT_FDCWD, "config/usb_gadget/g1/functions/uac2.usb0/p_srate", O_WRONLY|O_EXCL) = 3 [ 33.007476][ T36] audit: type=1400 audit(1785401728.920:64): avc: denied { execmem } for pid=313 comm="syz-executor413" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 33.027169][ T313] ================================================================== [ 33.035395][ T313] BUG: KASAN: invalid-free in f_uac2_opts_p_srate_store+0x224/0x2b0 [ 33.040889][ T36] audit: type=1400 audit(1785401728.920:65): avc: denied { mounton } for pid=313 comm="syz-executor413" path="/root/config" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 33.043496][ T313] Free of addr ffff888130d67d86 by task syz-executor413/313 [ 33.043514][ T313] [ 33.043534][ T313] CPU: 0 UID: 0 PID: 313 Comm: syz-executor413 Not tainted syzkaller #0 0b31bef96cff8e44f9e14c4f768eb06c85e3b290 [ 33.043578][ T313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 33.043646][ T313] Call Trace: [ 33.043674][ T313] [ 33.043697][ T313] __dump_stack+0x21/0x30 [ 33.043858][ T313] dump_stack_lvl+0x140/0x1c0 [ 33.043953][ T313] ? __cfi_dump_stack_lvl+0x10/0x10 [ 33.044071][ T313] print_address_description+0x71/0x210 [ 33.044209][ T313] print_report+0x4a/0x70 [ 33.044325][ T313] ? f_uac2_opts_p_srate_store+0x224/0x2b0 [ 33.044394][ T313] kasan_report_invalid_free+0x11e/0x160 [ 33.044476][ T313] ? f_uac2_opts_p_srate_store+0x224/0x2b0 [ 33.044550][ T313] ? f_uac2_opts_p_srate_store+0x224/0x2b0 [ 33.044622][ T313] check_slab_allocation+0xdf/0xf0 [ 33.044696][ T313] __kasan_slab_pre_free+0x36/0x50 [ 33.044769][ T313] kfree+0xf8/0x440 [ 33.044831][ T313] ? f_uac2_opts_p_srate_store+0x224/0x2b0 [ 33.044906][ T313] f_uac2_opts_p_srate_store+0x224/0x2b0 [ 33.044985][ T313] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 33.045080][ T313] ? down_read+0x7f/0xe0 [ 33.045185][ T313] ? __cfi_down_read+0x10/0x10 [ 33.045277][ T313] configfs_write_iter+0x32f/0x490 [ 33.045350][ T313] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 33.045442][ T313] vfs_write+0x762/0xfd0 [ 33.045512][ T313] ? __cfi_vfs_write+0x10/0x10 [ 33.045566][ T313] ? cgroup_update_frozen+0x160/0x980 [ 33.045647][ T313] ? ptrace_stop+0x6d6/0x8f0 [ 33.045719][ T313] ? __kasan_check_read+0x15/0x20 [ 33.045782][ T313] ksys_write+0x145/0x260 [ 33.045857][ T313] ? __cfi_ksys_write+0x10/0x10 [ 33.045920][ T313] ? __kasan_check_write+0x18/0x20 [ 33.045982][ T313] __x64_sys_write+0x7f/0x90 [ 33.046052][ T313] x64_sys_call+0x271c/0x2ee0 [ 33.046105][ T313] do_syscall_64+0x57/0xf0 [ 33.046167][ T313] ? clear_bhb_loop+0x50/0xa0 [ 33.046244][ T313] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 33.046325][ T313] RIP: 0033:0x7f5f6b1a7cb9 [ 33.046374][ T313] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d8 ff ff ff f7 d8 64 89 01 48 [ 33.046460][ T313] RSP: 002b:00007ffde87e8358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 33.046608][ T313] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f5f6b1a7cb9 [ 33.046679][ T313] RDX: 0000000000000020 RSI: 0000200000000040 RDI: 0000000000000003 [ 33.046723][ T313] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffde87e8488 [ 33.046766][ T313] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffde87e8478 [ 33.046807][ T313] R13: 0000000000000002 R14: 00007f5f6b238ca0 R15: 0000000000000002 [ 33.046860][ T313] [ 33.046881][ T313] [ 33.075121][ T36] audit: type=1400 audit(1785401728.920:66): avc: denied { mount } for pid=313 comm="syz-executor413" name="/" dev="configfs" ino=2086 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=filesystem permissive=1 [ 33.076052][ T313] Allocated by task 313: [ 33.088662][ T36] audit: type=1400 audit(1785401728.920:67): avc: denied { search } for pid=313 comm="syz-executor413" name="/" dev="configfs" ino=2086 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 33.098032][ T313] kasan_save_track+0x3e/0x80 [ 33.098066][ T313] kasan_save_alloc_info+0x3a/0x50 [ 33.101851][ T36] audit: type=1400 audit(1785401728.920:68): avc: denied { write } for pid=313 comm="syz-executor413" name="usb_gadget" dev="configfs" ino=2087 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 33.104344][ T313] __kasan_kmalloc+0x96/0xb0 [ 33.104374][ T313] __kmalloc_node_track_caller_noprof+0x24e/0x4f0 [ 33.109794][ T36] audit: type=1400 audit(1785401728.920:69): avc: denied { add_name } for pid=313 comm="syz-executor413" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 33.113414][ T313] kstrdup+0x4d/0x130 [ 33.113449][ T313] f_uac2_opts_p_srate_store+0x11e/0x2b0 [ 33.119118][ T36] audit: type=1400 audit(1785401728.920:70): avc: denied { create } for pid=313 comm="syz-executor413" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:configfs_t tclass=dir permissive=1 [ 33.124292][ T313] configfs_write_iter+0x32f/0x490 [ 33.124322][ T313] vfs_write+0x762/0xfd0 [ 33.124343][ T313] ksys_write+0x145/0x260 [ 33.129615][ T36] audit: type=1400 audit(1785401728.920:71): avc: denied { write } for pid=313 comm="syz-executor413" name="p_srate" dev="configfs" ino=2710 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 33.134578][ T313] __x64_sys_write+0x7f/0x90 [ 33.134606][ T313] x64_sys_call+0x271c/0x2ee0 [ 33.134626][ T313] do_syscall_64+0x57/0xf0 [ 33.140780][ T36] audit: type=1400 audit(1785401728.920:72): avc: denied { open } for pid=313 comm="syz-executor413" path="/root/config/usb_gadget/g1/functions/uac2.usb0/p_srate" dev="configfs" ino=2710 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 33.146128][ T313] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 33.146161][ T313] [ 33.576600][ T313] The buggy address belongs to the object at ffff888130d67d80 [ 33.576600][ T313] which belongs to the cache kmalloc-32 of size 32 [ 33.590581][ T313] The buggy address is located 6 bytes inside of [ 33.590581][ T313] 32-byte region [ffff888130d67d80, ffff888130d67da0) [ 33.603622][ T313] [ 33.605969][ T313] The buggy address belongs to the physical page: [ 33.612399][ T313] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x130d67 [ 33.621283][ T313] flags: 0x4000000000000000(zone=1) [ 33.626493][ T313] page_type: f5(slab) [ 33.630492][ T313] raw: 4000000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 33.639109][ T313] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 33.647693][ T313] page dumped because: kasan: bad access detected [ 33.654197][ T313] page_owner tracks the page as allocated [ 33.659930][ T313] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 313, tgid 313 (strace-static-x), ts 33000580009, free_ts 27035260638 [ 33.679311][ T313] post_alloc_hook+0x37d/0x3b0 [ 33.684242][ T313] prep_new_page+0x2d/0x180 [ 33.688782][ T313] get_page_from_freelist+0x4aea/0x4ba0 [ 33.694359][ T313] __alloc_pages_noprof+0x35a/0x7e0 [ 33.699584][ T313] alloc_slab_page+0x6b/0x1e0 [ 33.704275][ T313] allocate_slab+0x69/0x430 [ 33.708789][ T313] ___slab_alloc+0x591/0x8c0 [ 33.713397][ T313] __kmalloc_noprof+0x2fc/0x510 [ 33.718359][ T313] security_prepare_creds+0x66/0x260 [ 33.723736][ T313] prepare_creds+0x46d/0x6b0 [ 33.728333][ T313] prepare_exec_creds+0x1b/0x220 [ 33.733299][ T313] bprm_execve+0xe8/0x13f0 [ 33.738206][ T313] do_execveat_common+0x97e/0xae0 [ 33.743339][ T313] __x64_sys_execve+0x96/0xb0 [ 33.748421][ T313] x64_sys_call+0x12c4/0x2ee0 [ 33.753117][ T313] do_syscall_64+0x57/0xf0 [ 33.757632][ T313] page last free pid 299 tgid 299 stack trace: [ 33.763785][ T313] free_unref_page+0xbb8/0xf70 [ 33.768558][ T313] __folio_put+0x272/0x2c0 [ 33.773097][ T313] anon_pipe_buf_release+0x169/0x1f0 [ 33.778462][ T313] pipe_read+0x621/0x11d0 [ 33.782839][ T313] vfs_read+0x60e/0xc70 [ 33.787012][ T313] ksys_read+0x145/0x260 [ 33.791263][ T313] __x64_sys_read+0x7f/0x90 [ 33.795795][ T313] x64_sys_call+0x2638/0x2ee0 [ 33.800480][ T313] do_syscall_64+0x57/0xf0 [ 33.804905][ T313] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 33.810821][ T313] [ 33.813152][ T313] Memory state around the buggy address: [ 33.818812][ T313] ffff888130d67c80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 33.826890][ T313] ffff888130d67d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.834970][ T313] >ffff888130d67d80: 00 00 00 00 fc fc fc fc fa fb fb fb fc fc fc fc [ 33.843044][ T313] ^ [ 33.847126][ T313] ffff888130d67e00: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc write(3, "\x28\x99\xfb\x2a\xd9\x2c\x38\x97\x6e\xbc\x6c\xad\x5a\x71\x34\x67\x96\xff\x25\xad\xb7\x52\xd2\x30\x30\x2c\x39\x36\x30\x30\x30\x00", 32) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 33.855205][ T313] ffff888130d67e80: fa fb fb fb fc fc fc fc fc f