ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor1351509846 <...> Warning: Permanently added '10.128.0.145' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor1351509846", ["ci2-android-6-1/syz-executor1351509846"], 0x7fff7e00bb80 /* 10 vars */) = 0 brk(NULL) = 0x55556de84000 brk(0x55556de84d40) = 0x55556de84d40 arch_prctl(ARCH_SET_FS, 0x55556de843c0) = 0 set_tid_address(0x55556de84690) = 304 set_robust_list(0x55556de846a0, 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-executor1351509846", 4096) = 44 getrandom("\x49\x47\xf9\xd2\x94\x8b\xa0\x9f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556de84d40 brk(0x55556dea5d40) = 0x55556dea5d40 brk(0x55556dea6000) = 0x55556dea6000 mprotect(0x7fee018b9000, 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 write(1, "executing program\n", 18) = 18 executing program 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 [ 26.414617][ T28] audit: type=1400 audit(1787256229.529:64): avc: denied { execmem } for pid=304 comm="syz-executor135" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 26.421260][ T304] ================================================================== [ 26.441638][ T28] audit: type=1400 audit(1787256229.529:65): avc: denied { mounton } for pid=304 comm="syz-executor135" path="/root/config" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 26.442220][ T304] BUG: KASAN: invalid-free in __kmem_cache_free+0xb7/0x1b0 [ 26.442280][ T304] Free of addr ffff888108fe088c by task syz-executor135/304 [ 26.442293][ T304] [ 26.442304][ T304] CPU: 1 PID: 304 Comm: syz-executor135 Not tainted syzkaller #0 [ 26.466318][ T28] audit: type=1400 audit(1787256229.539:66): avc: denied { mount } for pid=304 comm="syz-executor135" name="/" dev="configfs" ino=14285 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=filesystem permissive=1 [ 26.472282][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.480177][ T28] audit: type=1400 audit(1787256229.539:67): avc: denied { search } for pid=304 comm="syz-executor135" name="/" dev="configfs" ino=14285 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 26.481998][ T304] Call Trace: [ 26.490316][ T28] audit: type=1400 audit(1787256229.539:68): avc: denied { write } for pid=304 comm="syz-executor135" name="usb_gadget" dev="configfs" ino=14286 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 26.512605][ T304] [ 26.512616][ T304] __dump_stack+0x21/0x24 [ 26.512645][ T304] dump_stack_lvl+0x110/0x170 [ 26.523562][ T28] audit: type=1400 audit(1787256229.539:69): avc: denied { add_name } for pid=304 comm="syz-executor135" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 26.545101][ T304] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.545135][ T304] print_address_description+0x71/0x200 [ 26.549255][ T28] audit: type=1400 audit(1787256229.539:70): avc: denied { create } for pid=304 comm="syz-executor135" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:configfs_t tclass=dir permissive=1 [ 26.571533][ T304] print_report+0x4a/0x60 [ 26.571565][ T304] ? __kmem_cache_free+0xb7/0x1b0 [ 26.571592][ T304] kasan_report_invalid_free+0xd5/0xf0 [ 26.585325][ T28] audit: type=1400 audit(1787256229.539:71): avc: denied { write } for pid=304 comm="syz-executor135" name="p_srate" dev="configfs" ino=15472 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 26.604059][ T304] ? __kmem_cache_free+0xb7/0x1b0 [ 26.604097][ T304] ? __kmem_cache_free+0xb7/0x1b0 [ 26.609872][ T28] audit: type=1400 audit(1787256229.539:72): avc: denied { open } for pid=304 comm="syz-executor135" path="/root/config/usb_gadget/g1/functions/uac2.usb0/p_srate" dev="configfs" ino=15472 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 26.614688][ T304] ____kasan_slab_free+0x14f/0x180 [ 26.714400][ T304] __kasan_slab_free+0x11/0x20 [ 26.719196][ T304] slab_free_freelist_hook+0xc2/0x190 [ 26.724595][ T304] ? f_uac2_opts_p_srate_store+0x220/0x2a0 [ 26.730413][ T304] __kmem_cache_free+0xb7/0x1b0 [ 26.735281][ T304] kfree+0x6f/0xf0 [ 26.739024][ T304] f_uac2_opts_p_srate_store+0x220/0x2a0 [ 26.744674][ T304] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 26.750851][ T304] ? down_read+0xa6/0xf0 [ 26.755098][ T304] ? __cfi_down_read+0x10/0x10 [ 26.759895][ T304] ? avc_policy_seqno+0x1b/0x70 [ 26.764750][ T304] ? selinux_file_permission+0x2a5/0x510 [ 26.770404][ T304] configfs_write_iter+0x323/0x410 [ 26.775567][ T304] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 26.781769][ T304] vfs_write+0x5ef/0xd00 [ 26.786033][ T304] ? __cfi_vfs_write+0x10/0x10 [ 26.790814][ T304] ? memset+0x35/0x40 [ 26.794818][ T304] ? __kasan_check_read+0x11/0x20 [ 26.799859][ T304] ? __fdget_pos+0x2d4/0x380 [ 26.804466][ T304] ksys_write+0x14a/0x260 [ 26.808819][ T304] ? __cfi_ksys_write+0x10/0x10 [ 26.813687][ T304] ? fpregs_restore_userregs+0x128/0x260 [ 26.819340][ T304] __x64_sys_write+0x7b/0x90 [ 26.823946][ T304] x64_sys_call+0x27b/0x9a0 [ 26.828470][ T304] do_syscall_64+0x4c/0xa0 [ 26.832915][ T304] ? clear_bhb_loop+0x30/0x80 [ 26.837613][ T304] ? clear_bhb_loop+0x30/0x80 [ 26.842307][ T304] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.848224][ T304] RIP: 0033:0x7fee01828cb9 [ 26.852674][ T304] 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 [ 26.872292][ T304] RSP: 002b:00007ffe5fa81508 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 26.880731][ T304] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fee01828cb9 [ 26.888721][ T304] RDX: 0000000000000101 RSI: 0000200000000d40 RDI: 0000000000000003 [ 26.896703][ T304] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffe5fa81638 [ 26.904690][ T304] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe5fa81628 [ 26.912678][ T304] R13: 0000000000000002 R14: 00007fee018b9ca0 R15: 0000000000000002 [ 26.920669][ T304] [ 26.923726][ T304] [ 26.926062][ T304] Allocated by task 304: [ 26.930310][ T304] kasan_set_track+0x4b/0x70 [ 26.934949][ T304] kasan_save_alloc_info+0x1f/0x30 [ 26.940090][ T304] __kasan_kmalloc+0x95/0xb0 [ 26.944718][ T304] __kmalloc_node_track_caller+0xb1/0x1e0 [ 26.950448][ T304] kstrdup+0x3b/0x80 [ 26.954361][ T304] f_uac2_opts_p_srate_store+0x11a/0x2a0 [ 26.960012][ T304] configfs_write_iter+0x323/0x410 [ 26.965144][ T304] vfs_write+0x5ef/0xd00 [ 26.969403][ T304] ksys_write+0x14a/0x260 [ 26.973749][ T304] __x64_sys_write+0x7b/0x90 [ 26.978367][ T304] x64_sys_call+0x27b/0x9a0 [ 26.982909][ T304] do_syscall_64+0x4c/0xa0 [ 26.987346][ T304] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.993281][ T304] [ 26.995637][ T304] The buggy address belongs to the object at ffff888108fe0880 [ 26.995637][ T304] which belongs to the cache kmalloc-32 of size 32 [ 27.009641][ T304] The buggy address is located 12 bytes inside of [ 27.009641][ T304] 32-byte region [ffff888108fe0880, ffff888108fe08a0) [ 27.022767][ T304] [ 27.025126][ T304] The buggy address belongs to the physical page: [ 27.031567][ T304] page:ffffea000423f800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x108fe0 [ 27.041831][ T304] flags: 0x4000000000000200(slab|zone=1) [ 27.047498][ T304] raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100042600 [ 27.056106][ T304] raw: 0000000000000000 0000000080400040 00000001ffffffff 0000000000000000 [ 27.064702][ T304] page dumped because: kasan: bad access detected [ 27.071130][ T304] page_owner tracks the page as allocated [ 27.076894][ T304] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 1439000184, free_ts 0 [ 27.093491][ T304] post_alloc_hook+0x1f5/0x210 [ 27.098281][ T304] prep_new_page+0x1c/0x110 [ 27.102808][ T304] get_page_from_freelist+0x2ca9/0x2d20 [ 27.108387][ T304] __alloc_pages+0x1fa/0x610 [ 27.113004][ T304] alloc_slab_page+0x6e/0xf0 [ 27.117632][ T304] new_slab+0x98/0x3e0 [ 27.121712][ T304] ___slab_alloc+0x70f/0xb70 [ 27.126319][ T304] __slab_alloc+0x5e/0xa0 [ 27.130674][ T304] __kmem_cache_alloc_node+0x204/0x2d0 [ 27.136183][ T304] __kmalloc_node_track_caller+0xa1/0x1e0 [ 27.141949][ T304] krealloc+0x6f/0x110 [ 27.146038][ T304] add_sysfs_param+0x142/0x830 [ 27.150826][ T304] kernel_add_sysfs_param+0xb1/0x12e [ 27.156130][ T304] param_sysfs_builtin+0x20d/0x2ae [ 27.161260][ T304] param_sysfs_init+0x6a/0x6f [ 27.165959][ T304] do_one_initcall+0x1d6/0x580 [ 27.170749][ T304] page_owner free stack trace missing [ 27.176130][ T304] [ 27.178466][ T304] Memory state around the buggy address: [ 27.184104][ T304] ffff888108fe0780: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 27.192180][ T304] ffff888108fe0800: fa fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 27.200250][ T304] >ffff888108fe0880: 00 00 02 fc fc fc fc fc fb fb fb fb fc fc fc fc [ 27.208320][ T304] ^ 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 +++ [ 27.212658][ T304] ffff888108fe0900: fb fb fb fb fc fc fc fc