ci2-android-6-12-rust/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-12-rust/syz-executor2189714279 <...> Warning: Permanently added '10.128.10.36' (ED25519) to the list of known hosts. execve("ci2-android-6-12-rust/syz-executor2189714279", ["ci2-android-6-12-rust/syz-executor2189714279"], 0x7ffcecc5c6b0 /* 10 vars */) = 0 brk(NULL) = 0x555592e41000 brk(0x555592e41d40) = 0x555592e41d40 arch_prctl(ARCH_SET_FS, 0x555592e413c0) = 0 set_tid_address(0x555592e41690) = 312 set_robust_list(0x555592e416a0, 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-executor2189714279", 4096) = 50 getrandom("\x91\x6d\x64\xb7\xd5\x75\x2e\x58", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555592e41d40 brk(0x555592e62d40) = 0x555592e62d40 brk(0x555592e63000) = 0x555592e63000 mprotect(0x7fbe2ae19000, 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 openat(AT_FDCWD, "/dev/mapper/control", O_RDWR) = 3 ioctl(3, DM_DEV_CREATE, [{version=[4, 0, 0], data_size=312, name="syza2", uuid="LVM-syza1", flags=DM_NOFLUSH_FLAG|DM_IMA_MEASUREMENT_FLAG}] => [{version=[4, 48, 0], data_size=305, dev=makedev(0xfc, 0), name="syza2", uuid="LVM-syza1", target_count=0, open_count=0, event_nr=0, flags=DM_NOFLUSH_FLAG|DM_IMA_MEASUREMENT_FLAG}]) = 0 [ 22.919811][ T36] audit: type=1400 audit(1792530799.319:64): avc: denied { execmem } for pid=312 comm="syz-executor218" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.923072][ T312] ================================================================== [ 22.939634][ T36] audit: type=1400 audit(1792530799.319:65): avc: denied { read write } for pid=312 comm="syz-executor218" name="control" dev="devtmpfs" ino=198 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:lvm_control_t tclass=chr_file permissive=1 [ 22.947248][ T312] BUG: KASAN: slab-use-after-free in snapshot_ctr+0x586/0x1350 [ 22.971398][ T36] audit: type=1400 audit(1792530799.319:66): avc: denied { open } for pid=312 comm="syz-executor218" path="/dev/mapper/control" dev="devtmpfs" ino=198 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:lvm_control_t tclass=chr_file permissive=1 [ 22.978503][ T312] Read of size 8 at addr ffff888120e3fe98 by task syz-executor218/312 [ 22.978520][ T312] [ 22.978537][ T312] CPU: 0 UID: 0 PID: 312 Comm: syz-executor218 Not tainted syzkaller #0 f4dc25654f8255e5780388d900d0b326847aed68 [ 22.978561][ T312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 22.978580][ T312] Call Trace: [ 22.978586][ T312] [ 22.978594][ T312] __dump_stack+0x21/0x30 [ 22.978624][ T312] dump_stack_lvl+0x140/0x1c0 [ 22.978650][ T312] ? __cfi_dump_stack_lvl+0x10/0x10 [ 22.978674][ T312] ? __cfi__printk+0x10/0x10 [ 22.978698][ T312] print_address_description+0x71/0x210 [ 22.978725][ T312] print_report+0x4a/0x70 [ 22.978748][ T312] kasan_report+0x162/0x1a0 [ 22.978767][ T312] ? snapshot_ctr+0x586/0x1350 [ 22.978789][ T312] ? snapshot_ctr+0x586/0x1350 [ 22.978809][ T312] __asan_report_load8_noabort+0x18/0x20 [ 22.978833][ T312] snapshot_ctr+0x586/0x1350 [ 22.978853][ T312] ? dm_split_args+0xa1/0x740 [ 22.978870][ T312] ? __cfi_snapshot_ctr+0x10/0x10 [ 22.978897][ T312] ? dm_split_args+0x5d0/0x740 [ 22.978916][ T312] dm_table_add_target+0x59f/0xcb0 [ 22.978935][ T312] table_load+0x2eb/0x7d0 [ 22.978958][ T312] ? __check_object_size+0x99/0x870 [ 22.978984][ T312] ? __cfi_table_load+0x10/0x10 [ 22.979008][ T312] ? __kasan_check_write+0x18/0x20 [ 22.979031][ T312] ? __cfi_table_load+0x10/0x10 [ 22.979060][ T312] dm_ctl_ioctl+0x8f3/0xde0 [ 22.979084][ T312] ? __cfi_dm_ctl_ioctl+0x10/0x10 [ 22.979111][ T312] ? ptrace_notify+0x20d/0x290 [ 22.979138][ T312] ? bpf_lsm_file_ioctl+0xd/0x20 [ 22.979155][ T312] ? security_file_ioctl+0x3e/0x110 [ 22.979179][ T312] ? __cfi_dm_ctl_ioctl+0x10/0x10 [ 22.979202][ T312] __se_sys_ioctl+0x123/0x1b0 [ 22.979220][ T312] __x64_sys_ioctl+0x7f/0xa0 [ 22.979237][ T312] x64_sys_call+0x1878/0x2ee0 [ 22.979255][ T312] do_syscall_64+0x57/0xf0 [ 22.979271][ T312] ? clear_bhb_loop+0x50/0xa0 [ 22.979294][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 22.979315][ T312] RIP: 0033:0x7fbe2ad88ff9 [ 22.979337][ 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 [ 22.979352][ T312] RSP: 002b:00007fffb0f005c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 22.979380][ T312] RAX: ffffffffffffffda RBX: 00007fffb0f006f8 RCX: 00007fbe2ad88ff9 [ 22.979394][ T312] RDX: 0000200000000140 RSI: 00000000c138fd09 RDI: 0000000000000003 [ 22.979406][ T312] RBP: 0000000000000001 R08: 0000000000000013 R09: 00007fffb0f006f8 [ 22.979419][ T312] R10: 0000000000000001 R11: 0000000000000246 R12: 00007fffb0f006e8 [ 22.979431][ T312] R13: 0000000000000002 R14: 00007fbe2ae19ca0 R15: 0000000000000002 [ 22.979445][ T312] [ 22.979451][ T312] [ 23.003146][ T36] audit: type=1400 audit(1792530799.319:67): avc: denied { ioctl } for pid=312 comm="syz-executor218" path="/dev/mapper/control" dev="devtmpfs" ino=198 ioctlcmd=0xfd03 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:lvm_control_t tclass=chr_file permissive=1 [ 23.010946][ T312] Allocated by task 312: [ 23.010956][ T312] kasan_save_track+0x3e/0x80 [ 23.307745][ T312] kasan_save_alloc_info+0x3a/0x50 [ 23.312842][ T312] __kasan_kmalloc+0x96/0xb0 [ 23.317424][ T312] __kmalloc_cache_node_noprof+0x225/0x430 [ 23.323209][ T312] dm_get_table_device+0x1e3/0x6c0 [ 23.328296][ T312] dm_get_device+0x32b/0x7f0 [ 23.332873][ T312] snapshot_ctr+0x292/0x1350 [ 23.337439][ T312] dm_table_add_target+0x59f/0xcb0 [ 23.342525][ T312] table_load+0x2eb/0x7d0 [ 23.346832][ T312] dm_ctl_ioctl+0x8f3/0xde0 [ 23.351314][ T312] __se_sys_ioctl+0x123/0x1b0 [ 23.355962][ T312] __x64_sys_ioctl+0x7f/0xa0 [ 23.360525][ T312] x64_sys_call+0x1878/0x2ee0 [ 23.365269][ T312] do_syscall_64+0x57/0xf0 [ 23.369669][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 23.375542][ T312] [ 23.377845][ T312] Freed by task 312: [ 23.381720][ T312] kasan_save_track+0x3e/0x80 [ 23.386379][ T312] kasan_save_free_info+0x44/0x50 [ 23.391384][ T312] __kasan_slab_free+0x5f/0x80 [ 23.396118][ T312] kfree+0x158/0x440 [ 23.400007][ T312] dm_put_table_device+0x298/0x2e0 [ 23.405095][ T312] dm_get_device+0x571/0x7f0 [ 23.409657][ T312] snapshot_ctr+0x435/0x1350 [ 23.414219][ T312] dm_table_add_target+0x59f/0xcb0 [ 23.419302][ T312] table_load+0x2eb/0x7d0 [ 23.423637][ T312] dm_ctl_ioctl+0x8f3/0xde0 [ 23.428132][ T312] __se_sys_ioctl+0x123/0x1b0 [ 23.432790][ T312] __x64_sys_ioctl+0x7f/0xa0 [ 23.437376][ T312] x64_sys_call+0x1878/0x2ee0 [ 23.442032][ T312] do_syscall_64+0x57/0xf0 [ 23.446613][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 23.452511][ T312] [ 23.454819][ T312] The buggy address belongs to the object at ffff888120e3fe80 [ 23.454819][ T312] which belongs to the cache kmalloc-96 of size 96 [ 23.468690][ T312] The buggy address is located 24 bytes inside of [ 23.468690][ T312] freed 96-byte region [ffff888120e3fe80, ffff888120e3fee0) [ 23.482298][ T312] [ 23.484599][ T312] The buggy address belongs to the physical page: [ 23.490993][ T312] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x120e3f [ 23.499842][ T312] flags: 0x4000000000000000(zone=1) [ 23.505024][ T312] page_type: f5(slab) [ 23.508986][ T312] raw: 4000000000000000 ffff888100041280 dead000000000122 0000000000000000 [ 23.517547][ T312] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 23.526105][ T312] page dumped because: kasan: bad access detected [ 23.532503][ T312] page_owner tracks the page as allocated [ 23.538191][ T312] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 236, tgid 236 (mkdir), ts 13934992131, free_ts 12329145753 [ 23.556485][ T312] post_alloc_hook+0x37d/0x3b0 [ 23.561229][ T312] prep_new_page+0x2d/0x180 [ 23.565709][ T312] get_page_from_freelist+0x4aea/0x4ba0 [ 23.571245][ T312] __alloc_pages_noprof+0x35a/0x7e0 [ 23.576766][ T312] alloc_slab_page+0x6b/0x1e0 [ 23.581428][ T312] allocate_slab+0x69/0x430 [ 23.585905][ T312] ___slab_alloc+0x591/0x8c0 [ 23.590471][ T312] __kmalloc_noprof+0x2fc/0x510 [ 23.595299][ T312] ext4_find_extent+0x1f5/0xd80 [ 23.600129][ T312] ext4_ext_map_blocks+0x212/0x6080 [ 23.605313][ T312] ext4_map_query_blocks+0x9c/0x2d0 [ 23.610581][ T312] ext4_map_blocks+0x318/0x17f0 [ 23.615410][ T312] ext4_append+0x231/0x560 [ 23.619817][ T312] ext4_init_new_dir+0x2b8/0x580 [ 23.624733][ T312] ext4_mkdir+0x4c7/0xca0 [ 23.629037][ T312] vfs_mkdir+0x591/0x810 [ 23.633256][ T312] page last free pid 33 tgid 33 stack trace: [ 23.639205][ T312] free_unref_page+0xb99/0xf50 [ 23.643945][ T312] __free_pages+0x6b/0x3b0 [ 23.648338][ T312] tlb_remove_table_rcu+0x2b2/0x3d0 [ 23.653509][ T312] rcu_do_batch+0x56d/0xcb0 [ 23.657989][ T312] rcu_nocb_cb_kthread+0x533/0xb60 [ 23.663094][ T312] kthread+0x2c7/0x360 [ 23.667141][ T312] ret_from_fork+0x67/0xa0 [ 23.671542][ T312] ret_from_fork_asm+0x1a/0x30 [ 23.676281][ T312] [ 23.678579][ T312] Memory state around the buggy address: [ 23.684180][ T312] ffff888120e3fd80: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 23.692212][ T312] ffff888120e3fe00: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 23.700247][ T312] >ffff888120e3fe80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 23.708296][ T312] ^ [ 23.713113][ T312] ffff888120e3ff00: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 23.721160][ T312] ffff888120e3ff80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 23.729190][ T312] ================================================================== [ 23.737451][ T312] Disabling lock debugging due to kernel taint [ 23.740743][ T36] audit: type=1400 audit(1792530800.139:68): avc: denied { read } for pid=92 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 23.743642][ T312] device-mapper: table: 252:0: device 1:1 not in table devices list [ 23.766851][ T36] audit: type=1400 audit(1792530800.139:69): avc: denied { search } for pid=92 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 23.773637][ T312] device-mapper: table: 252:0: snapshot: COW device cannot be the same as origin device (-EINVAL) ioctl(3, DM_TABLE_LOAD, [{version=[4, 0, 0], data_size=440, data_start=312, dev=makedev(0xfc, 0), target_count=1, flags=0}, ...] => [{version=[4, 48, 0], data_size=440, data_start=312, dev=makedev(0xfc, 0), flags=0}]) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 23.795080][ T36] audit: type=1400 audit(1792530800.139:70): avc: denied { write } for pid=92 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t t