ci2-android-6-12-rust/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-12-rust/syz-executor3961371892 <...> Warning: Permanently added '10.128.1.168' (ED25519) to the list of known hosts. execve("ci2-android-6-12-rust/syz-executor3961371892", ["ci2-android-6-12-rust/syz-executor3961371892"], 0x7ffe18d211c0 /* 10 vars */) = 0 brk(NULL) = 0x55557ef63000 brk(0x55557ef63d40) = 0x55557ef63d40 arch_prctl(ARCH_SET_FS, 0x55557ef633c0) = 0 set_tid_address(0x55557ef63690) = 312 set_robust_list(0x55557ef636a0, 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-executor3961371892", 4096) = 50 getrandom("\x7f\x16\xf8\xc0\x66\x76\xe3\x41", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557ef63d40 brk(0x55557ef84d40) = 0x55557ef84d40 brk(0x55557ef85000) = 0x55557ef85000 mprotect(0x7fb58327d000, 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 [ 23.281679][ T36] audit: type=1400 audit(1785484342.119:64): avc: denied { execmem } for pid=312 comm="syz-executor396" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.290723][ T312] ================================================================== [ 23.305142][ T36] audit: type=1400 audit(1785484342.119:65): avc: denied { mounton } for pid=312 comm="syz-executor396" path="/root/config" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.310215][ T312] BUG: KASAN: invalid-free in f_uac2_opts_c_srate_store+0x224/0x2b0 [ 23.333570][ T36] audit: type=1400 audit(1785484342.119:66): avc: denied { mount } for pid=312 comm="syz-executor396" name="/" dev="configfs" ino=1255 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=filesystem permissive=1 [ 23.341179][ T312] Free of addr ffff88810b36fe06 by task syz-executor396/312 [ 23.341194][ T312] [ 23.341216][ T312] CPU: 0 UID: 0 PID: 312 Comm: syz-executor396 Not tainted syzkaller #0 91781886e4a1baa38ce9d8cd537274748dd3a26f [ 23.341239][ T312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 23.341260][ T312] Call Trace: [ 23.341267][ T312] [ 23.341276][ T312] __dump_stack+0x21/0x30 [ 23.341309][ T312] dump_stack_lvl+0x140/0x1c0 [ 23.341334][ T312] ? __cfi_dump_stack_lvl+0x10/0x10 [ 23.341358][ T312] print_address_description+0x71/0x210 [ 23.341384][ T312] print_report+0x4a/0x70 [ 23.341406][ T312] ? f_uac2_opts_c_srate_store+0x224/0x2b0 [ 23.341428][ T312] kasan_report_invalid_free+0x11e/0x160 [ 23.341453][ T312] ? f_uac2_opts_c_srate_store+0x224/0x2b0 [ 23.341475][ T312] ? f_uac2_opts_c_srate_store+0x224/0x2b0 [ 23.341496][ T312] check_slab_allocation+0xdf/0xf0 [ 23.341517][ T312] __kasan_slab_pre_free+0x36/0x50 [ 23.341537][ T312] kfree+0xf8/0x440 [ 23.341553][ T312] ? f_uac2_opts_c_srate_store+0x224/0x2b0 [ 23.341579][ T312] f_uac2_opts_c_srate_store+0x224/0x2b0 [ 23.341601][ T312] ? __cfi_f_uac2_opts_c_srate_store+0x10/0x10 [ 23.341622][ T312] ? down_read+0x7f/0xe0 [ 23.341647][ T312] ? __cfi_down_read+0x10/0x10 [ 23.341672][ T312] configfs_write_iter+0x32f/0x490 [ 23.341696][ T312] ? __cfi_f_uac2_opts_c_srate_store+0x10/0x10 [ 23.341717][ T312] vfs_write+0x762/0xfd0 [ 23.341738][ T312] ? __cfi_vfs_write+0x10/0x10 [ 23.341755][ T312] ? cgroup_update_frozen+0x160/0x980 [ 23.341780][ T312] ? ptrace_stop+0x6d6/0x8f0 [ 23.341800][ T312] ? __kasan_check_read+0x15/0x20 [ 23.341819][ T312] ksys_write+0x145/0x260 [ 23.341836][ T312] ? __cfi_ksys_write+0x10/0x10 [ 23.341859][ T312] ? __kasan_check_write+0x18/0x20 [ 23.341877][ T312] __x64_sys_write+0x7f/0x90 [ 23.341895][ T312] x64_sys_call+0x271c/0x2ee0 [ 23.341912][ T312] do_syscall_64+0x57/0xf0 [ 23.341932][ T312] ? clear_bhb_loop+0x50/0xa0 [ 23.341955][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 23.341978][ T312] RIP: 0033:0x7fb5831eccf9 [ 23.342003][ T312] 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 [ 23.342018][ T312] RSP: 002b:00007ffded283a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 23.342042][ T312] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fb5831eccf9 [ 23.342056][ T312] RDX: 000000000000006e RSI: 0000200000000280 RDI: 0000000000000003 [ 23.342068][ T312] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffded283b38 [ 23.342080][ T312] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffded283b28 [ 23.342092][ T312] R13: 0000000000000002 R14: 00007fb58327dca0 R15: 0000000000000002 [ 23.342106][ T312] [ 23.342113][ T312] [ 23.364500][ T36] audit: type=1400 audit(1785484342.119:67): avc: denied { search } for pid=312 comm="syz-executor396" name="/" dev="configfs" ino=1255 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.371381][ T312] Allocated by task 312: [ 23.371395][ T312] kasan_save_track+0x3e/0x80 [ 23.371425][ T312] kasan_save_alloc_info+0x3a/0x50 [ 23.371445][ T312] __kasan_kmalloc+0x96/0xb0 [ 23.371460][ T312] __kmalloc_node_track_caller_noprof+0x24e/0x4f0 [ 23.371479][ T312] kstrdup+0x4d/0x130 [ 23.376254][ T36] audit: type=1400 audit(1785484342.119:68): avc: denied { write } for pid=312 comm="syz-executor396" name="usb_gadget" dev="configfs" ino=1256 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.385858][ T312] f_uac2_opts_c_srate_store+0x11e/0x2b0 [ 23.385903][ T312] configfs_write_iter+0x32f/0x490 [ 23.385922][ T312] vfs_write+0x762/0xfd0 [ 23.385938][ T312] ksys_write+0x145/0x260 [ 23.396872][ T36] audit: type=1400 audit(1785484342.119:69): avc: denied { add_name } for pid=312 comm="syz-executor396" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 23.399741][ T312] __x64_sys_write+0x7f/0x90 [ 23.402955][ T36] audit: type=1400 audit(1785484342.119:70): avc: denied { create } for pid=312 comm="syz-executor396" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:configfs_t tclass=dir permissive=1 [ 23.407248][ T312] x64_sys_call+0x271c/0x2ee0 [ 23.413388][ T36] audit: type=1400 audit(1785484342.119:71): avc: denied { write } for pid=312 comm="syz-executor396" name="c_srate" dev="configfs" ino=3062 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 23.417446][ T312] do_syscall_64+0x57/0xf0 [ 23.423383][ T36] audit: type=1400 audit(1785484342.119:72): avc: denied { open } for pid=312 comm="syz-executor396" path="/root/config/usb_gadget/g1/functions/uac2.usb0/c_srate" dev="configfs" ino=3062 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 23.427344][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 23.851263][ T312] [ 23.853586][ T312] The buggy address belongs to the object at ffff88810b36fe00 [ 23.853586][ T312] which belongs to the cache kmalloc-128 of size 128 [ 23.867883][ T312] The buggy address is located 6 bytes inside of [ 23.867883][ T312] 111-byte region [ffff88810b36fe00, ffff88810b36fe6f) [ 23.881162][ T312] [ 23.883594][ T312] The buggy address belongs to the physical page: [ 23.890085][ T312] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10b36f [ 23.898933][ T312] flags: 0x4000000000000000(zone=1) [ 23.904143][ T312] page_type: f5(slab) [ 23.908127][ T312] raw: 4000000000000000 ffff888100041a00 dead000000000122 0000000000000000 [ 23.916807][ T312] raw: 0000000000000000 0000000080100010 00000001f5000000 0000000000000000 [ 23.925388][ T312] page dumped because: kasan: bad access detected [ 23.932103][ T312] page_owner tracks the page as allocated [ 23.937929][ T312] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 80, tgid 80 (mount), ts 4868838250, free_ts 4868495179 [ 23.956439][ T312] post_alloc_hook+0x37d/0x3b0 [ 23.961216][ T312] prep_new_page+0x2d/0x180 [ 23.965890][ T312] get_page_from_freelist+0x4aea/0x4ba0 [ 23.971425][ T312] __alloc_pages_noprof+0x35a/0x7e0 [ 23.976608][ T312] alloc_slab_page+0x6b/0x1e0 [ 23.981728][ T312] allocate_slab+0x69/0x430 [ 23.986214][ T312] ___slab_alloc+0x591/0x8c0 [ 23.990886][ T312] __kmalloc_cache_noprof+0x2cd/0x470 [ 23.996427][ T312] shrinker_alloc+0x68/0xa60 [ 24.001001][ T312] alloc_super+0x602/0x950 [ 24.005407][ T312] sget+0x1fb/0x710 [ 24.009198][ T312] mount_single+0x3f/0x1e0 [ 24.013813][ T312] pstore_mount+0x30/0x40 [ 24.018680][ T312] legacy_get_tree+0x103/0x1b0 [ 24.023553][ T312] vfs_get_tree+0x9e/0x290 [ 24.028592][ T312] do_new_mount+0x251/0xb40 [ 24.033326][ T312] page last free pid 80 tgid 80 stack trace: [ 24.039308][ T312] free_unref_page+0xbb8/0xf70 [ 24.044100][ T312] __free_pages+0x6b/0x3b0 [ 24.048532][ T312] free_pages+0x86/0x90 [ 24.052684][ T312] selinux_genfs_get_sid+0x209/0x2d0 [ 24.057963][ T312] inode_doinit_with_dentry+0x8f8/0xde0 [ 24.063540][ T312] selinux_d_instantiate+0x2b/0x40 [ 24.068651][ T312] security_d_instantiate+0xb8/0xf0 [ 24.073838][ T312] d_splice_alias+0x71/0x3a0 [ 24.078422][ T312] kernfs_iop_lookup+0x2c6/0x320 [ 24.083520][ T312] __lookup_slow+0x2e2/0x420 [ 24.088098][ T312] lookup_slow+0x57/0x80 [ 24.093295][ T312] walk_component+0x308/0x450 [ 24.098008][ T312] path_lookupat+0x155/0x440 [ 24.102721][ T312] filename_lookup+0x22d/0x5a0 [ 24.108276][ T312] vfs_statx+0x106/0x210 [ 24.112537][ T312] vfs_fstatat+0xe5/0x1d0 [ 24.117059][ T312] [ 24.119507][ T312] Memory state around the buggy address: [ 24.125143][ T312] ffff88810b36fd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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) = ? [ 24.133751][ T312] ffff88810b36fd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.141827][ T312] >ffff88810b36fe00: 00 00 00 00 00 00 00 00 00 00 00 00 00 07 fc fc [ 24.149881][ T312] ^ [ 24.154024][ T312] ffff88810b36fe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.162093][ T312] ffff88810b36ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 24.170142][ T312] ================================================================== [ 24.179190][ T312] Disabling lock debugging due to kernel taint +++ exited with 0 +++ [