ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor2542134152 <...> Warning: Permanently added '10.128.1.128' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor2542134152", ["ci2-android-6-1/syz-executor2542134152"], 0x7fffd15430c0 /* 10 vars */) = 0 brk(NULL) = 0x555559806000 brk(0x555559806e00) = 0x555559806e00 arch_prctl(ARCH_SET_FS, 0x555559806480) = 0 set_tid_address(0x555559806750) = 305 set_robust_list(0x555559806760, 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-executor2542134152", 4096) = 44 getrandom("\x11\xfa\x39\xe2\xd8\xe2\x94\x75", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555559806e00 brk(0x555559827e00) = 0x555559827e00 brk(0x555559828000) = 0x555559828000 mprotect(0x7f58f9bbe000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f58f9b1bc10, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f58f9b1e9e0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f58f9b1bc10, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f58f9b1e9e0}, NULL, 8) = 0 write(1, "executing program\n", 18) = 18 executing program mkdir("./myconfig", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- mount(NULL, "./myconfig", "configfs", 0, NULL) = 0 mkdirat(AT_FDCWD, "./myconfig/usb_gadget/g1", 0777) = 0 mkdirat(AT_FDCWD, "./myconfig/usb_gadget/g1/functions/uac2.usb0", 0777) = 0 openat(AT_FDCWD, "./myconfig/usb_gadget/g1/functions/uac2.usb0/p_srate", O_WRONLY) = 3 [ 23.089755][ T28] audit: type=1400 audit(1785622597.850:64): avc: denied { execmem } for pid=305 comm="syz-executor254" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.097342][ T305] ================================================================== [ 23.113017][ T28] audit: type=1400 audit(1785622597.850:65): avc: denied { mounton } for pid=305 comm="syz-executor254" path="/root/myconfig" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.117238][ T305] BUG: KASAN: invalid-free in __kmem_cache_free+0xb7/0x1b0 [ 23.117284][ T305] Free of addr ffff888109172c18 by task syz-executor254/305 [ 23.140500][ T28] audit: type=1400 audit(1785622597.850:66): avc: denied { mount } for pid=305 comm="syz-executor254" name="/" dev="configfs" ino=13008 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=filesystem permissive=1 [ 23.147381][ T305] [ 23.147388][ T305] CPU: 0 PID: 305 Comm: syz-executor254 Not tainted syzkaller #0 [ 23.147407][ T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 23.147416][ T305] Call Trace: [ 23.147422][ T305] [ 23.154855][ T28] audit: type=1400 audit(1785622597.850:67): avc: denied { search } for pid=305 comm="syz-executor254" name="/" dev="configfs" ino=13008 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.177602][ T305] __dump_stack+0x21/0x24 [ 23.177638][ T305] dump_stack_lvl+0x110/0x170 [ 23.177657][ T305] ? __cfi_dump_stack_lvl+0x8/0x8 [ 23.177679][ T305] print_address_description+0x71/0x200 [ 23.180135][ T28] audit: type=1400 audit(1785622597.850:68): avc: denied { write } for pid=305 comm="syz-executor254" name="usb_gadget" dev="configfs" ino=13009 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.187704][ T305] print_report+0x4a/0x60 [ 23.187725][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 23.198298][ T28] audit: type=1400 audit(1785622597.850:69): avc: denied { add_name } for pid=305 comm="syz-executor254" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.201065][ T305] kasan_report_invalid_free+0xd5/0xf0 [ 23.204000][ T28] audit: type=1400 audit(1785622597.850:70): avc: denied { create } for pid=305 comm="syz-executor254" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:configfs_t tclass=dir permissive=1 [ 23.226366][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 23.226392][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 23.226413][ T305] ____kasan_slab_free+0x14f/0x180 [ 23.231033][ T28] audit: type=1400 audit(1785622597.850:71): avc: denied { write } for pid=305 comm="syz-executor254" name="p_srate" dev="configfs" ino=15584 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 23.235413][ T305] __kasan_slab_free+0x11/0x20 [ 23.235436][ T305] slab_free_freelist_hook+0xc2/0x190 [ 23.240633][ T28] audit: type=1400 audit(1785622597.850:72): avc: denied { open } for pid=305 comm="syz-executor254" path="/root/myconfig/usb_gadget/g1/functions/uac2.usb0/p_srate" dev="configfs" ino=15584 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 23.245985][ T305] ? f_uac2_opts_p_srate_store+0x220/0x2a0 [ 23.246012][ T305] __kmem_cache_free+0xb7/0x1b0 [ 23.409963][ T305] kfree+0x6f/0xf0 [ 23.413674][ T305] f_uac2_opts_p_srate_store+0x220/0x2a0 [ 23.419301][ T305] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 23.425446][ T305] ? down_read+0xa6/0xf0 [ 23.429671][ T305] ? __cfi_down_read+0x10/0x10 [ 23.434418][ T305] ? avc_policy_seqno+0x1b/0x70 [ 23.439253][ T305] ? selinux_file_permission+0x2a5/0x510 [ 23.444872][ T305] configfs_write_iter+0x323/0x410 [ 23.449986][ T305] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 23.456152][ T305] vfs_write+0x5ef/0xd00 [ 23.460397][ T305] ? __cfi_vfs_write+0x10/0x10 [ 23.465154][ T305] ? memset+0x35/0x40 [ 23.469130][ T305] ? __kasan_check_read+0x11/0x20 [ 23.474156][ T305] ? __fdget_pos+0x2d4/0x380 [ 23.478733][ T305] ksys_write+0x14a/0x260 [ 23.483047][ T305] ? __cfi_ksys_write+0x10/0x10 [ 23.487902][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 23.493522][ T305] __x64_sys_write+0x7b/0x90 [ 23.498107][ T305] x64_sys_call+0x27b/0x9a0 [ 23.502614][ T305] do_syscall_64+0x4c/0xa0 [ 23.507029][ T305] ? clear_bhb_loop+0x30/0x80 [ 23.511763][ T305] ? clear_bhb_loop+0x30/0x80 [ 23.516451][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 23.522337][ T305] RIP: 0033:0x7f58f9b36ff9 [ 23.526918][ T305] 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 [ 23.546526][ T305] RSP: 002b:00007ffeedac2f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 23.554942][ T305] RAX: ffffffffffffffda RBX: 73666769666e6f63 RCX: 00007f58f9b36ff9 [ 23.562925][ T305] RDX: 0000000000000055 RSI: 0000200000000340 RDI: 0000000000000003 [ 23.570893][ T305] RBP: 00007ffeedac2f78 R08: 00007f58f9b1bc10 R09: 00007f58f9b1bc10 [ 23.579053][ T305] R10: 00007f58f9b1bc10 R11: 0000000000000246 R12: 0000000000000000 [ 23.587239][ T305] R13: 0000000000000002 R14: 00007f58f9bbeca0 R15: 0000000000000002 [ 23.595226][ T305] [ 23.598237][ T305] [ 23.600544][ T305] Allocated by task 305: [ 23.604766][ T305] kasan_set_track+0x4b/0x70 [ 23.609370][ T305] kasan_save_alloc_info+0x1f/0x30 [ 23.614464][ T305] __kasan_kmalloc+0x95/0xb0 [ 23.619041][ T305] __kmalloc_node_track_caller+0xb1/0x1e0 [ 23.624762][ T305] kstrdup+0x3b/0x80 [ 23.628642][ T305] f_uac2_opts_p_srate_store+0x11a/0x2a0 [ 23.634264][ T305] configfs_write_iter+0x323/0x410 [ 23.639368][ T305] vfs_write+0x5ef/0xd00 [ 23.643596][ T305] ksys_write+0x14a/0x260 [ 23.647912][ T305] __x64_sys_write+0x7b/0x90 [ 23.652494][ T305] x64_sys_call+0x27b/0x9a0 [ 23.657027][ T305] do_syscall_64+0x4c/0xa0 [ 23.661436][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 23.667337][ T305] [ 23.669649][ T305] The buggy address belongs to the object at ffff888109172c00 [ 23.669649][ T305] which belongs to the cache kmalloc-96 of size 96 [ 23.683511][ T305] The buggy address is located 24 bytes inside of [ 23.683511][ T305] 96-byte region [ffff888109172c00, ffff888109172c60) [ 23.696603][ T305] [ 23.698927][ T305] The buggy address belongs to the physical page: [ 23.705321][ T305] page:ffffea0004245c80 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888109172800 pfn:0x109172 [ 23.716850][ T305] flags: 0x4000000000000200(slab|zone=1) [ 23.722477][ T305] raw: 4000000000000200 ffffea0004245ac0 dead000000000004 ffff888100042900 [ 23.731068][ T305] raw: ffff888109172800 0000000080200018 00000001ffffffff 0000000000000000 [ 23.739632][ T305] page dumped because: kasan: bad access detected [ 23.746026][ T305] page_owner tracks the page as allocated [ 23.751745][ T305] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 1536943357, free_ts 0 [ 23.768313][ T305] post_alloc_hook+0x1f5/0x210 [ 23.773069][ T305] prep_new_page+0x1c/0x110 [ 23.777559][ T305] get_page_from_freelist+0x2ca9/0x2d20 [ 23.783093][ T305] __alloc_pages+0x1fa/0x610 [ 23.787680][ T305] alloc_slab_page+0x6e/0xf0 [ 23.792260][ T305] new_slab+0x98/0x3e0 [ 23.796318][ T305] ___slab_alloc+0x70f/0xb70 [ 23.800894][ T305] __slab_alloc+0x5e/0xa0 [ 23.805211][ T305] __kmem_cache_alloc_node+0x204/0x2d0 [ 23.810660][ T305] kmalloc_trace+0x29/0xb0 [ 23.815058][ T305] acpi_ut_evaluate_object+0xe4/0x480 [ 23.820424][ T305] acpi_ut_execute_power_methods+0x9b/0x1c0 [ 23.826301][ T305] acpi_get_object_info+0x523/0xd40 [ 23.831487][ T305] acpi_init_device_object+0x54d/0x2570 [ 23.837043][ T305] acpi_add_single_object+0xfe/0x1990 [ 23.842418][ T305] acpi_bus_check_add+0x38b/0x7e0 [ 23.847432][ T305] page_owner free stack trace missing [ 23.852779][ T305] [ 23.855088][ T305] Memory state around the buggy address: [ 23.860711][ T305] ffff888109172b00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 23.868757][ T305] ffff888109172b80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 23.876800][ T305] >ffff888109172c00: 00 00 00 00 00 00 00 00 00 03 fc fc fc fc fc fc [ 23.884846][ T305] ^ write(3, "\x34\x34\x31\x30\x30\x2c\x34\x38\x30\x30\xbd\x19\x5c\xa7\x37\x9d\xda\x9a\xd6\xf5\x11\xc8\x30\x2c\x38\x38\xfa\x52\x05\x6f\xbb\x9b\x6e\xf6\x51\xcd\x0f\x6f\x87\xbf\x15\xa8\xdc\x1d\x23\xab\x3d\x32\x77\x3d\x57\x1f\xd4\x30\x4a\xad\xad\x37\xf9\x9a\x88\x33\x99\x2c\xa9\xc5\x9f\x29\xdd\x1d\x37\x40\x1f\x74\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 85) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 23.889674][ T305] ffff888109172c80: f