ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor3124348991 <...> T28] audit: type=1400 audit(1789702841.786:62): avc: denied { rlimitinh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.047106][ T28] audit: type=1400 audit(1789702841.786:63): avc: denied { siginh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.158' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor3124348991", ["ci2-android-6-1/syz-executor3124348991"], 0x7ffedb92dca0 /* 10 vars */) = 0 brk(NULL) = 0x555569bad000 brk(0x555569badd40) = 0x555569badd40 arch_prctl(ARCH_SET_FS, 0x555569bad3c0) = 0 set_tid_address(0x555569bad690) = 305 set_robust_list(0x555569bad6a0, 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-executor3124348991", 4096) = 44 getrandom("\x18\xb7\xeb\xcd\x12\xbf\x0d\x77", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555569badd40 brk(0x555569bced40) = 0x555569bced40 brk(0x555569bcf000) = 0x555569bcf000 mprotect(0x7fdfa1f00000, 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/c_srate", O_WRONLY) = 3 [ 23.637002][ T28] audit: type=1400 audit(1789702851.386:64): avc: denied { execmem } for pid=305 comm="syz-executor312" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.643341][ T305] ================================================================== [ 23.659492][ T28] audit: type=1400 audit(1789702851.386:65): avc: denied { mounton } for pid=305 comm="syz-executor312" path="/root/config" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.664435][ T305] BUG: KASAN: invalid-free in __kmem_cache_free+0xb7/0x1b0 [ 23.687482][ T28] audit: type=1400 audit(1789702851.386:66): avc: denied { mount } for pid=305 comm="syz-executor312" name="/" dev="configfs" ino=14462 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=filesystem permissive=1 [ 23.694343][ T305] Free of addr ffff88810f5f9c06 by task syz-executor312/305 [ 23.694355][ T305] [ 23.694360][ T305] CPU: 0 PID: 305 Comm: syz-executor312 Not tainted syzkaller #0 [ 23.694376][ T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 23.717469][ T28] audit: type=1400 audit(1789702851.386:67): avc: denied { search } for pid=305 comm="syz-executor312" name="/" dev="configfs" ino=14462 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.724557][ T305] Call Trace: [ 23.724564][ T305] [ 23.724571][ T305] __dump_stack+0x21/0x24 [ 23.724597][ T305] dump_stack_lvl+0x110/0x170 [ 23.727015][ T28] audit: type=1400 audit(1789702851.386:68): avc: denied { write } for pid=305 comm="syz-executor312" name="usb_gadget" dev="configfs" ino=14463 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.734591][ T305] ? __cfi_dump_stack_lvl+0x8/0x8 [ 23.734615][ T305] print_address_description+0x71/0x200 [ 23.744670][ T28] audit: type=1400 audit(1789702851.386:69): avc: denied { add_name } for pid=305 comm="syz-executor312" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.767010][ T305] print_report+0x4a/0x60 [ 23.767033][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 23.770316][ T28] audit: type=1400 audit(1789702851.386:70): avc: denied { create } for pid=305 comm="syz-executor312" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:configfs_t tclass=dir permissive=1 [ 23.773204][ T305] kasan_report_invalid_free+0xd5/0xf0 [ 23.777508][ T28] audit: type=1400 audit(1789702851.386:71): avc: denied { write } for pid=305 comm="syz-executor312" name="c_srate" dev="configfs" ino=14858 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 23.782151][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 23.782172][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 23.782188][ T305] ____kasan_slab_free+0x14f/0x180 [ 23.806060][ T28] audit: type=1400 audit(1789702851.386:72): avc: denied { open } for pid=305 comm="syz-executor312" path="/root/config/usb_gadget/g1/functions/uac2.usb0/c_srate" dev="configfs" ino=14858 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 23.810239][ T305] __kasan_slab_free+0x11/0x20 [ 23.810263][ T305] slab_free_freelist_hook+0xc2/0x190 [ 23.946000][ T305] ? f_uac2_opts_c_srate_store+0x220/0x2a0 [ 23.951791][ T305] __kmem_cache_free+0xb7/0x1b0 [ 23.956624][ T305] kfree+0x6f/0xf0 [ 23.960320][ T305] f_uac2_opts_c_srate_store+0x220/0x2a0 [ 23.965931][ T305] ? __cfi_f_uac2_opts_c_srate_store+0x10/0x10 [ 23.972061][ T305] ? down_read+0xa6/0xf0 [ 23.976282][ T305] ? __cfi_down_read+0x10/0x10 [ 23.981022][ T305] ? avc_policy_seqno+0x1b/0x70 [ 23.985847][ T305] ? selinux_file_permission+0x2a5/0x510 [ 23.991472][ T305] configfs_write_iter+0x323/0x410 [ 23.996564][ T305] ? __cfi_f_uac2_opts_c_srate_store+0x10/0x10 [ 24.002717][ T305] vfs_write+0x5ef/0xd00 [ 24.006946][ T305] ? __cfi_vfs_write+0x10/0x10 [ 24.011692][ T305] ? memset+0x35/0x40 [ 24.015661][ T305] ? __kasan_check_read+0x11/0x20 [ 24.020674][ T305] ? __fdget_pos+0x2d4/0x380 [ 24.025251][ T305] ksys_write+0x14a/0x260 [ 24.029560][ T305] ? __cfi_ksys_write+0x10/0x10 [ 24.034395][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 24.040009][ T305] __x64_sys_write+0x7b/0x90 [ 24.044581][ T305] x64_sys_call+0x27b/0x9a0 [ 24.049066][ T305] do_syscall_64+0x4c/0xa0 [ 24.053478][ T305] ? clear_bhb_loop+0x30/0x80 [ 24.058135][ T305] ? clear_bhb_loop+0x30/0x80 [ 24.062793][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.068667][ T305] RIP: 0033:0x7fdfa1e6fcf9 [ 24.073082][ 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 [ 24.092665][ T305] RSP: 002b:00007ffd81a093d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 24.101065][ T305] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fdfa1e6fcf9 [ 24.109026][ T305] RDX: 000000000000006e RSI: 0000200000000280 RDI: 0000000000000003 [ 24.116980][ T305] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffd81a09508 [ 24.124957][ T305] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd81a094f8 [ 24.132910][ T305] R13: 0000000000000002 R14: 00007fdfa1f00ca0 R15: 0000000000000002 [ 24.140864][ T305] [ 24.143862][ T305] [ 24.146167][ T305] Allocated by task 305: [ 24.150384][ T305] kasan_set_track+0x4b/0x70 [ 24.154957][ T305] kasan_save_alloc_info+0x1f/0x30 [ 24.160045][ T305] __kasan_kmalloc+0x95/0xb0 [ 24.164619][ T305] __kmalloc_node_track_caller+0xb1/0x1e0 [ 24.170319][ T305] kstrdup+0x3b/0x80 [ 24.174193][ T305] f_uac2_opts_c_srate_store+0x11a/0x2a0 [ 24.179807][ T305] configfs_write_iter+0x323/0x410 [ 24.184901][ T305] vfs_write+0x5ef/0xd00 [ 24.189123][ T305] ksys_write+0x14a/0x260 [ 24.193431][ T305] __x64_sys_write+0x7b/0x90 [ 24.197998][ T305] x64_sys_call+0x27b/0x9a0 [ 24.202480][ T305] do_syscall_64+0x4c/0xa0 [ 24.206879][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.212752][ T305] [ 24.215057][ T305] The buggy address belongs to the object at ffff88810f5f9c00 [ 24.215057][ T305] which belongs to the cache kmalloc-128 of size 128 [ 24.229085][ T305] The buggy address is located 6 bytes inside of [ 24.229085][ T305] 128-byte region [ffff88810f5f9c00, ffff88810f5f9c80) [ 24.242162][ T305] [ 24.244470][ T305] The buggy address belongs to the physical page: [ 24.250857][ T305] page:ffffea00043d7e40 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88810f5f9400 pfn:0x10f5f9 [ 24.262476][ T305] flags: 0x4000000000000200(slab|zone=1) [ 24.268107][ T305] raw: 4000000000000200 0000000000000000 dead000000000122 ffff888100042a80 [ 24.276674][ T305] raw: ffff88810f5f9400 000000008010000f 00000001ffffffff 0000000000000000 [ 24.285232][ T305] page dumped because: kasan: bad access detected [ 24.291634][ T305] page_owner tracks the page as allocated [ 24.297323][ T305] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (init), ts 3401822323, free_ts 0 [ 24.313448][ T305] post_alloc_hook+0x1f5/0x210 [ 24.318198][ T305] prep_new_page+0x1c/0x110 [ 24.322683][ T305] get_page_from_freelist+0x2ca9/0x2d20 [ 24.328209][ T305] __alloc_pages+0x1fa/0x610 [ 24.332868][ T305] alloc_slab_page+0x6e/0xf0 [ 24.337436][ T305] new_slab+0x98/0x3e0 [ 24.341483][ T305] ___slab_alloc+0x70f/0xb70 [ 24.346052][ T305] __slab_alloc+0x5e/0xa0 [ 24.350362][ T305] __kmem_cache_alloc_node+0x204/0x2d0 [ 24.355806][ T305] __kmalloc+0xa4/0x1e0 [ 24.359938][ T305] hashtab_init+0xca/0x160 [ 24.364347][ T305] symtab_init+0x40/0x60 [ 24.368585][ T305] class_read+0x1fa/0xa80 [ 24.372900][ T305] policydb_read+0xb21/0x25c0 [ 24.377566][ T305] security_load_policy+0x15b/0xeb0 [ 24.382768][ T305] sel_write_load+0x386/0x600 [ 24.387438][ T305] page_owner free stack trace missing [ 24.392785][ T305] [ 24.395088][ T305] Memory state around the buggy address: [ 24.400693][ T305] ffff88810f5f9b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 24.408730][ T305] ffff88810f5f9b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.416766][ T305] >ffff88810f5f9c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 07 fc fc [ 24.424804][ T305] ^ [ 24.428850][ T305] ffff88810f5f9c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc write(3, "\x34\x34\x31\x46\x30\x2c\x34\xca\x26\x34\x83\x85\xce\x08\xa6\x47\xbd\x92\x67\x1b\xf5\x8e\xbf\x98\x5e\x2d\x6c\x66\xc4\x0d\x80\xe9\xed\x03\x5e\x90\x90\x94\x61\x6c\xac\x97\x1c\x79\x38\x92\x53\xa7\x9e\xfa\xe2\x74\xfe\xd6\xa6\xe8\x6a\x55\x71\x65\xdf\x7b\x12\x09\x76\x54\x0a\x63\x74\xe0\xbd\x54\x51\x54\xd5\xe4\x91\x3a\x5a\xab\x9c\x7c\x5e\x69\x18\x2f\x88\x46\x90\xb7\xbe\xf3\x58\x0c\xca\x69\x33\x6f\x21\xdf"..., 110) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 24.437062][ T305] ffff88810f5f9d00: