ci2-android-6-12-rust/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-12-rust/syz-executor3179031431 <...> Warning: Permanently added '10.128.0.201' (ED25519) to the list of known hosts. execve("ci2-android-6-12-rust/syz-executor3179031431", ["ci2-android-6-12-rust/syz-executor3179031431"], 0x7ffcbd776cb0 /* 10 vars */) = 0 brk(NULL) = 0x55555b531000 brk(0x55555b531d40) = 0x55555b531d40 arch_prctl(ARCH_SET_FS, 0x55555b5313c0) = 0 set_tid_address(0x55555b531690) = 312 set_robust_list(0x55555b5316a0, 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-executor3179031431", 4096) = 50 getrandom("\x37\x21\x10\xf5\xe6\x73\x15\x78", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555b531d40 brk(0x55555b552d40) = 0x55555b552d40 brk(0x55555b553000) = 0x55555b553000 mprotect(0x7f01d3d1d000, 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 [ 24.909943][ T36] audit: type=1400 audit(1792532613.070:64): avc: denied { execmem } for pid=312 comm="syz-executor317" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.913969][ T312] ================================================================== [ 24.929400][ T36] audit: type=1400 audit(1792532613.070:65): avc: denied { read write } for pid=312 comm="syz-executor317" 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 [ 24.937407][ T312] BUG: KASAN: slab-use-after-free in snapshot_ctr+0x586/0x1350 [ 24.937439][ T312] Read of size 8 at addr ffff888111588098 by task syz-executor317/312 [ 24.937457][ T312] [ 24.961643][ T36] audit: type=1400 audit(1792532613.070:66): avc: denied { open } for pid=312 comm="syz-executor317" 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 [ 24.968749][ T312] CPU: 0 UID: 0 PID: 312 Comm: syz-executor317 Not tainted syzkaller #0 f4dc25654f8255e5780388d900d0b326847aed68 [ 24.968777][ T312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 24.968789][ T312] Call Trace: [ 24.968795][ T312] [ 24.968802][ T312] __dump_stack+0x21/0x30 [ 24.968840][ T312] dump_stack_lvl+0x140/0x1c0 [ 24.968865][ T312] ? __cfi_dump_stack_lvl+0x10/0x10 [ 24.968891][ T312] ? __cfi__printk+0x10/0x10 [ 24.968915][ T312] print_address_description+0x71/0x210 [ 24.968941][ T312] print_report+0x4a/0x70 [ 24.968965][ T312] kasan_report+0x162/0x1a0 [ 24.968984][ T312] ? snapshot_ctr+0x586/0x1350 [ 24.969005][ T312] ? snapshot_ctr+0x586/0x1350 [ 24.969026][ T312] __asan_report_load8_noabort+0x18/0x20 [ 24.969049][ T312] snapshot_ctr+0x586/0x1350 [ 24.969070][ T312] ? dm_split_args+0xa1/0x740 [ 24.969088][ T312] ? __cfi_snapshot_ctr+0x10/0x10 [ 24.969108][ T312] ? dm_split_args+0x5d0/0x740 [ 24.969127][ T312] dm_table_add_target+0x59f/0xcb0 [ 24.969147][ T312] table_load+0x2eb/0x7d0 [ 24.969170][ T312] ? __check_object_size+0x99/0x870 [ 24.969195][ T312] ? __cfi_table_load+0x10/0x10 [ 24.969219][ T312] ? __kasan_check_write+0x18/0x20 [ 24.969242][ T312] ? __cfi_table_load+0x10/0x10 [ 24.969265][ T312] dm_ctl_ioctl+0x8f3/0xde0 [ 24.969290][ T312] ? __cfi_dm_ctl_ioctl+0x10/0x10 [ 24.969317][ T312] ? ptrace_notify+0x20d/0x290 [ 24.969342][ T312] ? bpf_lsm_file_ioctl+0xd/0x20 [ 24.969360][ T312] ? security_file_ioctl+0x3e/0x110 [ 24.969384][ T312] ? __cfi_dm_ctl_ioctl+0x10/0x10 [ 24.969407][ T312] __se_sys_ioctl+0x123/0x1b0 [ 24.969425][ T312] __x64_sys_ioctl+0x7f/0xa0 [ 24.969442][ T312] x64_sys_call+0x1878/0x2ee0 [ 24.969460][ T312] do_syscall_64+0x57/0xf0 [ 24.969478][ T312] ? clear_bhb_loop+0x50/0xa0 [ 24.969499][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 24.969520][ T312] RIP: 0033:0x7f01d3c8cff9 [ 24.969537][ 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 [ 24.969551][ T312] RSP: 002b:00007ffd0f0d4468 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 24.969572][ T312] RAX: ffffffffffffffda RBX: 00007ffd0f0d4598 RCX: 00007f01d3c8cff9 [ 24.969586][ T312] RDX: 0000200000000140 RSI: 00000000c138fd09 RDI: 0000000000000003 [ 24.969599][ T312] RBP: 0000000000000001 R08: 0000000000000013 R09: 00007ffd0f0d4598 [ 24.969611][ T312] R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffd0f0d4588 [ 24.969622][ T312] R13: 0000000000000002 R14: 00007f01d3d1dca0 R15: 0000000000000002 [ 24.969637][ T312] [ 24.969643][ T312] [ 24.977191][ T36] audit: type=1400 audit(1792532613.070:67): avc: denied { ioctl } for pid=312 comm="syz-executor317" 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 [ 24.979258][ T312] Allocated by task 312: [ 25.294130][ T312] kasan_save_track+0x3e/0x80 [ 25.298807][ T312] kasan_save_alloc_info+0x3a/0x50 [ 25.303926][ T312] __kasan_kmalloc+0x96/0xb0 [ 25.308522][ T312] __kmalloc_cache_node_noprof+0x225/0x430 [ 25.314317][ T312] dm_get_table_device+0x1e3/0x6c0 [ 25.319415][ T312] dm_get_device+0x32b/0x7f0 [ 25.324003][ T312] snapshot_ctr+0x292/0x1350 [ 25.328579][ T312] dm_table_add_target+0x59f/0xcb0 [ 25.333676][ T312] table_load+0x2eb/0x7d0 [ 25.337995][ T312] dm_ctl_ioctl+0x8f3/0xde0 [ 25.342488][ T312] __se_sys_ioctl+0x123/0x1b0 [ 25.347156][ T312] __x64_sys_ioctl+0x7f/0xa0 [ 25.351729][ T312] x64_sys_call+0x1878/0x2ee0 [ 25.356391][ T312] do_syscall_64+0x57/0xf0 [ 25.360791][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 25.366678][ T312] [ 25.368998][ T312] Freed by task 312: [ 25.372890][ T312] kasan_save_track+0x3e/0x80 [ 25.377563][ T312] kasan_save_free_info+0x44/0x50 [ 25.382590][ T312] __kasan_slab_free+0x5f/0x80 [ 25.387349][ T312] kfree+0x158/0x440 [ 25.391232][ T312] dm_put_table_device+0x298/0x2e0 [ 25.396336][ T312] dm_get_device+0x571/0x7f0 [ 25.400910][ T312] snapshot_ctr+0x435/0x1350 [ 25.405505][ T312] dm_table_add_target+0x59f/0xcb0 [ 25.410615][ T312] table_load+0x2eb/0x7d0 [ 25.414957][ T312] dm_ctl_ioctl+0x8f3/0xde0 [ 25.419449][ T312] __se_sys_ioctl+0x123/0x1b0 [ 25.424136][ T312] __x64_sys_ioctl+0x7f/0xa0 [ 25.428735][ T312] x64_sys_call+0x1878/0x2ee0 [ 25.433411][ T312] do_syscall_64+0x57/0xf0 [ 25.437809][ T312] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 25.443686][ T312] [ 25.445998][ T312] The buggy address belongs to the object at ffff888111588080 [ 25.445998][ T312] which belongs to the cache kmalloc-96 of size 96 [ 25.459861][ T312] The buggy address is located 24 bytes inside of [ 25.459861][ T312] freed 96-byte region [ffff888111588080, ffff8881115880e0) [ 25.473559][ T312] [ 25.475870][ T312] The buggy address belongs to the physical page: [ 25.482277][ T312] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111588 [ 25.491109][ T312] flags: 0x4000000000000000(zone=1) [ 25.496315][ T312] page_type: f5(slab) [ 25.500323][ T312] raw: 4000000000000000 ffff888100041280 dead000000000122 0000000000000000 [ 25.508910][ T312] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 25.517590][ T312] page dumped because: kasan: bad access detected [ 25.524004][ T312] page_owner tracks the page as allocated [ 25.529802][ T312] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 231, tgid 231 (sshd-session), ts 14766576677, free_ts 14624826062 [ 25.548907][ T312] post_alloc_hook+0x37d/0x3b0 [ 25.553692][ T312] prep_new_page+0x2d/0x180 [ 25.558199][ T312] get_page_from_freelist+0x4aea/0x4ba0 [ 25.563770][ T312] __alloc_pages_noprof+0x35a/0x7e0 [ 25.568996][ T312] alloc_slab_page+0x6b/0x1e0 [ 25.573708][ T312] allocate_slab+0x69/0x430 [ 25.578232][ T312] ___slab_alloc+0x591/0x8c0 [ 25.582826][ T312] __kmalloc_noprof+0x2fc/0x510 [ 25.587718][ T312] ext4_find_extent+0x1f5/0xd80 [ 25.592566][ T312] ext4_ext_map_blocks+0x212/0x6080 [ 25.597766][ T312] ext4_map_query_blocks+0x9c/0x2d0 [ 25.602962][ T312] ext4_map_blocks+0x318/0x17f0 [ 25.607823][ T312] ext4_mpage_readpages+0x93d/0x1f00 [ 25.613126][ T312] ext4_readahead+0xe8/0x110 [ 25.617701][ T312] read_pages+0x2e1/0x7d0 [ 25.622034][ T312] page_cache_ra_unbounded+0xc4b/0xea0 [ 25.627518][ T312] page last free pid 33 tgid 33 stack trace: [ 25.633486][ T312] free_unref_page+0xb99/0xf50 [ 25.638239][ T312] __free_pages+0x6b/0x3b0 [ 25.642664][ T312] tlb_remove_table_rcu+0x2b2/0x3d0 [ 25.647874][ T312] rcu_do_batch+0x56d/0xcb0 [ 25.652381][ T312] rcu_nocb_cb_kthread+0x533/0xb60 [ 25.657479][ T312] kthread+0x2c7/0x360 [ 25.661536][ T312] ret_from_fork+0x67/0xa0 [ 25.665935][ T312] ret_from_fork_asm+0x1a/0x30 [ 25.670690][ T312] [ 25.673001][ T312] Memory state around the buggy address: [ 25.678627][ T312] ffff888111587f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.686683][ T312] ffff888111588000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.694725][ T312] >ffff888111588080: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 25.702813][ T312] ^ [ 25.707658][ T312] ffff888111588100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.715699][ T312] ffff888111588180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.723740][ T312] ================================================================== [ 25.732098][ T312] Disabling lock debugging due to kernel taint [ 25.734937][ T36] audit: type=1400 audit(1792532613.890:68): 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 [ 25.738287][ T312] device-mapper: table: 252:0: device 1:1 not in table devices list [ 25.762801][ T36] audit: type=1400 audit(1792532613.920:69): 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 [ 25.767931][ 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 +++ [ 25.789303][ T36] audit: type=1400 audit(1792532613.920:70): avc: denied { write } for pid=92 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:sys