ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor4006622945 <...> Warning: Permanently added '10.128.1.5' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor4006622945", ["ci2-android-6-1/syz-executor4006622945"], 0x7ffed73888f0 /* 10 vars */) = 0 brk(NULL) = 0x555565e84000 brk(0x555565e84d40) = 0x555565e84d40 arch_prctl(ARCH_SET_FS, 0x555565e843c0) = 0 set_tid_address(0x555565e84690) = 305 set_robust_list(0x555565e846a0, 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-executor4006622945", 4096) = 44 getrandom("\xf7\xe5\x1d\x19\x99\xcf\xe3\x42", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555565e84d40 brk(0x555565ea5d40) = 0x555565ea5d40 brk(0x555565ea6000) = 0x555565ea6000 mprotect(0x7fe3a51a3000, 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) = 3 [ 31.250033][ T28] audit: type=1400 audit(1787268403.512:64): avc: denied { execmem } for pid=305 comm="syz-executor400" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 31.267374][ T305] ================================================================== [ 31.277616][ T305] BUG: KASAN: invalid-free in __kmem_cache_free+0xb7/0x1b0 [ 31.284750][ T28] audit: type=1400 audit(1787268403.522:65): avc: denied { mounton } for pid=305 comm="syz-executor400" path="/root/config" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 31.285133][ T305] Free of addr ffff88810ffa0ecc by task syz-executor400/305 [ 31.310501][ T28] audit: type=1400 audit(1787268403.522:66): avc: denied { mount } for pid=305 comm="syz-executor400" name="/" dev="configfs" ino=10392 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=filesystem permissive=1 [ 31.315293][ T305] [ 31.315311][ T305] CPU: 1 PID: 305 Comm: syz-executor400 Not tainted syzkaller #0 [ 31.315331][ T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 31.315363][ T305] Call Trace: [ 31.339313][ T28] audit: type=1400 audit(1787268403.522:67): avc: denied { search } for pid=305 comm="syz-executor400" name="/" dev="configfs" ino=10392 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 31.340607][ T305] [ 31.348845][ T28] audit: type=1400 audit(1787268403.522:68): avc: denied { write } for pid=305 comm="syz-executor400" name="usb_gadget" dev="configfs" ino=10393 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 31.358384][ T305] __dump_stack+0x21/0x24 [ 31.358416][ T305] dump_stack_lvl+0x110/0x170 [ 31.362352][ T28] audit: type=1400 audit(1787268403.522:69): avc: denied { add_name } for pid=305 comm="syz-executor400" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 31.384268][ T305] ? __cfi_dump_stack_lvl+0x8/0x8 [ 31.384303][ T305] print_address_description+0x71/0x200 [ 31.387883][ T28] audit: type=1400 audit(1787268403.522:70): avc: denied { create } for pid=305 comm="syz-executor400" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:configfs_t tclass=dir permissive=1 [ 31.410360][ T305] print_report+0x4a/0x60 [ 31.410387][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 31.410414][ T305] kasan_report_invalid_free+0xd5/0xf0 [ 31.415550][ T28] audit: type=1400 audit(1787268403.532:71): avc: denied { write } for pid=305 comm="syz-executor400" name="p_srate" dev="configfs" ino=15196 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 31.419435][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 31.440435][ T28] audit: type=1400 audit(1787268403.532:72): avc: denied { open } for pid=305 comm="syz-executor400" path="/root/config/usb_gadget/g1/functions/uac2.usb0/p_srate" dev="configfs" ino=15196 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 31.444963][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 31.444997][ T305] ____kasan_slab_free+0x14f/0x180 [ 31.550409][ T305] __kasan_slab_free+0x11/0x20 [ 31.555185][ T305] slab_free_freelist_hook+0xc2/0x190 [ 31.560565][ T305] ? f_uac2_opts_p_srate_store+0x220/0x2a0 [ 31.566396][ T305] __kmem_cache_free+0xb7/0x1b0 [ 31.571256][ T305] kfree+0x6f/0xf0 [ 31.574981][ T305] f_uac2_opts_p_srate_store+0x220/0x2a0 [ 31.580656][ T305] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 31.586822][ T305] ? down_read+0xa6/0xf0 [ 31.591081][ T305] ? __cfi_down_read+0x10/0x10 [ 31.595844][ T305] ? avc_policy_seqno+0x1b/0x70 [ 31.600711][ T305] ? selinux_file_permission+0x2a5/0x510 [ 31.606384][ T305] configfs_write_iter+0x323/0x410 [ 31.611504][ T305] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 31.617686][ T305] vfs_write+0x5ef/0xd00 [ 31.621953][ T305] ? __cfi_vfs_write+0x10/0x10 [ 31.626735][ T305] ? memset+0x35/0x40 [ 31.630748][ T305] ? __kasan_check_read+0x11/0x20 [ 31.635872][ T305] ? __fdget_pos+0x2d4/0x380 [ 31.640485][ T305] ksys_write+0x14a/0x260 [ 31.644856][ T305] ? __cfi_ksys_write+0x10/0x10 [ 31.649722][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 31.655378][ T305] __x64_sys_write+0x7b/0x90 [ 31.659997][ T305] x64_sys_call+0x27b/0x9a0 [ 31.664543][ T305] do_syscall_64+0x4c/0xa0 [ 31.668990][ T305] ? clear_bhb_loop+0x30/0x80 [ 31.673689][ T305] ? clear_bhb_loop+0x30/0x80 [ 31.678382][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 31.684308][ T305] RIP: 0033:0x7fe3a5112cb9 [ 31.688748][ 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 [ 31.708371][ T305] RSP: 002b:00007fff72af9ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 31.716811][ T305] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fe3a5112cb9 [ 31.724799][ T305] RDX: 0000000000000101 RSI: 0000200000000d40 RDI: 0000000000000003 [ 31.732780][ T305] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007fff72af9cd8 [ 31.740780][ T305] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff72af9cc8 [ 31.748781][ T305] R13: 0000000000000002 R14: 00007fe3a51a3ca0 R15: 0000000000000002 [ 31.756783][ T305] [ 31.759823][ T305] [ 31.762151][ T305] Allocated by task 305: [ 31.766397][ T305] kasan_set_track+0x4b/0x70 [ 31.771008][ T305] kasan_save_alloc_info+0x1f/0x30 [ 31.776130][ T305] __kasan_kmalloc+0x95/0xb0 [ 31.780824][ T305] __kmalloc_node_track_caller+0xb1/0x1e0 [ 31.786559][ T305] kstrdup+0x3b/0x80 [ 31.790466][ T305] f_uac2_opts_p_srate_store+0x11a/0x2a0 [ 31.796111][ T305] configfs_write_iter+0x323/0x410 [ 31.801241][ T305] vfs_write+0x5ef/0xd00 [ 31.805500][ T305] ksys_write+0x14a/0x260 [ 31.809837][ T305] __x64_sys_write+0x7b/0x90 [ 31.814449][ T305] x64_sys_call+0x27b/0x9a0 [ 31.818969][ T305] do_syscall_64+0x4c/0xa0 [ 31.823421][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 31.829336][ T305] [ 31.831678][ T305] The buggy address belongs to the object at ffff88810ffa0ec0 [ 31.831678][ T305] which belongs to the cache kmalloc-32 of size 32 [ 31.845570][ T305] The buggy address is located 12 bytes inside of [ 31.845570][ T305] 32-byte region [ffff88810ffa0ec0, ffff88810ffa0ee0) [ 31.858707][ T305] [ 31.861046][ T305] The buggy address belongs to the physical page: [ 31.867481][ T305] page:ffffea00043fe800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10ffa0 [ 31.877836][ T305] flags: 0x4000000000000200(slab|zone=1) [ 31.883493][ T305] raw: 4000000000000200 0000000000000000 dead000000000001 ffff888100042600 [ 31.892096][ T305] raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000 [ 31.900684][ T305] page dumped because: kasan: bad access detected [ 31.907535][ T305] page_owner tracks the page as allocated [ 31.913278][ T305] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 86, tgid 86 (rcS), ts 5490500409, free_ts 0 [ 31.929638][ T305] post_alloc_hook+0x1f5/0x210 [ 31.934421][ T305] prep_new_page+0x1c/0x110 [ 31.938943][ T305] get_page_from_freelist+0x2ca9/0x2d20 [ 31.944530][ T305] __alloc_pages+0x1fa/0x610 [ 31.949136][ T305] alloc_slab_page+0x6e/0xf0 [ 31.953734][ T305] new_slab+0x98/0x3e0 [ 31.957811][ T305] ___slab_alloc+0x70f/0xb70 [ 31.962419][ T305] __slab_alloc+0x5e/0xa0 [ 31.966764][ T305] __kmem_cache_alloc_node+0x204/0x2d0 [ 31.972242][ T305] __kmalloc+0xa4/0x1e0 [ 31.976405][ T305] security_prepare_creds+0x4e/0x150 [ 31.981713][ T305] prepare_creds+0x428/0x610 [ 31.986407][ T305] prepare_exec_creds+0x17/0x220 [ 31.991362][ T305] bprm_execve+0xf1/0x1390 [ 31.995798][ T305] do_execveat_common+0x8e3/0xaa0 [ 32.000858][ T305] __x64_sys_execve+0x92/0xb0 [ 32.005564][ T305] page_owner free stack trace missing [ 32.010935][ T305] [ 32.013262][ T305] Memory state around the buggy address: [ 32.018900][ T305] ffff88810ffa0d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 32.026978][ T305] ffff88810ffa0e00: fa fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 32.035052][ T305] >ffff88810ffa0e80: 00 00 00 fc fc fc fc fc 00 00 02 fc fc fc fc fc [ 32.043118][ T305] ^ write(3, "\x34\x34\x31\x30\x1d\x44\x34\x38\x30\x30\x30\x2c\x39\x36\x30\x30\x30\x00\xb8\x6e\x04\x84\xd7\xd8\x27\xd3\xb9\xa9\x1a\xed\x13\xfd\x06\x63\x9e\x0c\xa6\xb2\x06\x12\x5f\xd7\x8b\xe6\x87\xd5\x5c\xe0\xd7\x67\xf5\x4f\x6f\x28\x0a\x37\x00\x80\x6c\x26\x3b\xcc\xc3\xfb\x66\x07\x6e\x31\xca\x48\x6f\xe3\x82\x23\x41\x67\x1a\xc4\x7a\xbf\x01\x0a\x3f\xe2\xc2\x80\x81\x5c\x5d\x44\x70\xf0\xc8\xcf\x38\x42\x02\x00\x00\x00"..., 257) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 32.049535][ T305] ffff88810ffa0f00: fa f