ci2-android-5-15/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-15/syz-executor3790395939
<...>
Warning: Permanently added '10.128.0.89' (ED25519) to the list of known hosts.
execve("ci2-android-5-15/syz-executor3790395939", ["ci2-android-5-15/syz-executor3790395939"], 0x7fff86bfa180 /* 10 vars */) = 0
brk(NULL) = 0x555580d96000
brk(0x555580d96d40) = 0x555580d96d40
arch_prctl(ARCH_SET_FS, 0x555580d963c0) = 0
set_tid_address(0x555580d96690) = 303
set_robust_list(0x555580d966a0, 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-5-15/syz-executor3790395939", 4096) = 45
getrandom("\xae\x24\x22\x54\xa2\xfb\xb6\x5b", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x555580d96d40
brk(0x555580db7d40) = 0x555580db7d40
brk(0x555580db8000) = 0x555580db8000
mprotect(0x7f0f04b31000, 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
socket(AF_PPPOX, SOCK_STREAM, 1) = 3
socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 4
connect(3, {sa_family=AF_PPPOX, sa_data="\x01\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x20\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00"}, 50) = 0
ioctl(3, BTRFS_IOC_QGROUP_LIMIT, NULL) = -1 ENOTTY (Inappropriate ioctl for device)
exit_group(0) = ?
[ 24.537426][ T30] audit: type=1400 audit(1786944015.597:64): avc: denied { execmem } for pid=303 comm="syz-executor379" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 24.557570][ T30] audit: type=1400 audit(1786944015.597:65): avc: denied { create } for pid=303 comm="syz-executor379" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=pppox_socket permissive=1
[ 24.577449][ T303] ==================================================================
[ 24.578328][ T30] audit: type=1400 audit(1786944015.597:66): avc: denied { connect } for pid=303 comm="syz-executor379" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=pppox_socket permissive=1
[ 24.585541][ T303] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0
[ 24.605840][ T30] audit: type=1400 audit(1786944015.617:67): avc: denied { ioctl } for pid=303 comm="syz-executor379" path="socket:[612]" dev="sockfs" ino=612 ioctlcmd=0x942b scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=pppox_socket permissive=1
[ 24.613408][ T303] Read of size 4 at addr ffff88810adaa400 by task syz-executor379/303
[ 24.646238][ T303]
[ 24.648561][ T303] CPU: 0 PID: 303 Comm: syz-executor379 Not tainted syzkaller #0
[ 24.656267][ T303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[ 24.666345][ T303] Call Trace:
[ 24.669621][ T303]
[ 24.672547][ T303] __dump_stack+0x21/0x30
[ 24.676872][ T303] dump_stack_lvl+0x110/0x170
[ 24.681543][ T303] ? show_regs_print_info+0x20/0x20
[ 24.686732][ T303] ? load_image+0x3f0/0x3f0
[ 24.691231][ T303] ? __local_bh_enable_ip+0x58/0x80
[ 24.696440][ T303] print_address_description+0x7f/0x2c0
[ 24.701986][ T303] ? pppol2tp_sock_to_session+0x1a0/0x1b0
[ 24.707709][ T303] kasan_report+0x10f/0x150
[ 24.712207][ T303] ? pppol2tp_sock_to_session+0x1a0/0x1b0
[ 24.718029][ T303] __asan_report_load4_noabort+0x14/0x20
[ 24.723659][ T303] pppol2tp_sock_to_session+0x1a0/0x1b0
[ 24.729199][ T303] pppol2tp_release+0x150/0x2b0
[ 24.734159][ T303] sock_close+0xb8/0x200
[ 24.738393][ T303] ? sock_mmap+0xa0/0xa0
[ 24.742626][ T303] __fput+0x22b/0x900
[ 24.746604][ T303] ____fput+0x15/0x20
[ 24.750575][ T303] task_work_run+0x127/0x190
[ 24.755172][ T303] do_exit+0xb70/0x29a0
[ 24.759362][ T303] ? ptrace_stop+0x6d8/0xa70
[ 24.764050][ T303] ? put_task_struct+0x90/0x90
[ 24.768895][ T303] ? ptrace_notify+0x1ea/0x270
[ 24.773665][ T303] ? do_notify_parent+0x830/0x830
[ 24.778685][ T303] do_group_exit+0x149/0x310
[ 24.783276][ T303] __x64_sys_exit_group+0x3f/0x40
[ 24.788296][ T303] x64_sys_call+0x832/0x9a0
[ 24.792792][ T303] do_syscall_64+0x4c/0xa0
[ 24.797202][ T303] ? clear_bhb_loop+0x50/0xa0
[ 24.801875][ T303] ? clear_bhb_loop+0x50/0xa0
[ 24.806559][ T303] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 24.812445][ T303] RIP: 0033:0x7f0f04aa0305
[ 24.816850][ T303] Code: Unable to access opcode bytes at RIP 0x7f0f04aa02db.
[ 24.824205][ T303] RSP: 002b:00007ffdf2197c28 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
[ 24.832618][ T303] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f0f04aa0305
[ 24.840593][ T303] RDX: 00000000000000e7 RSI: ffffffffffffffd8 RDI: 0000000000000000
[ 24.848555][ T303] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdf2197db8
[ 24.856519][ T303] R10: 000000000000000a R11: 0000000000000206 R12: 0000000000000000
[ 24.864482][ T303] R13: 00007f0f04b36110 R14: 00007f0f04b383a8 R15: 00007f0f04b383c0
[ 24.872475][ T303]
[ 24.875491][ T303]
[ 24.877807][ T303] Allocated by task 303:
[ 24.882034][ T303] __kasan_kmalloc+0xd4/0x100
[ 24.886717][ T303] __kmalloc+0x13d/0x2c0
[ 24.890962][ T303] l2tp_session_create+0x39/0xb60
[ 24.895988][ T303] pppol2tp_connect+0xbf5/0x1640
[ 24.900932][ T303] __sys_connect+0x3cb/0x450
[ 24.905528][ T303] __x64_sys_connect+0x7a/0x90
[ 24.910305][ T303] x64_sys_call+0x7c/0x9a0
[ 24.914734][ T303] do_syscall_64+0x4c/0xa0
[ 24.919146][ T303] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 24.925051][ T303]
[ 24.927365][ T303] Freed by task 8:
[ 24.931071][ T303] kasan_set_track+0x4a/0x70
[ 24.935649][ T303] kasan_set_free_info+0x23/0x40
[ 24.940592][ T303] ____kasan_slab_free+0x125/0x160
[ 24.945796][ T303] __kasan_slab_free+0x11/0x20
[ 24.950567][ T303] slab_free_freelist_hook+0xc2/0x190
[ 24.955949][ T303] kfree+0xc4/0x270
[ 24.959776][ T303] l2tp_session_put+0xaf/0x1a0
[ 24.964532][ T303] l2tp_session_delete+0x3a9/0x4a0
[ 24.969639][ T303] l2tp_tunnel_del_work+0x180/0x3d0
[ 24.974832][ T303] process_one_work+0x6c8/0xbb0
[ 24.979673][ T303] worker_thread+0xaa0/0x1250
[ 24.984345][ T303] kthread+0x3f5/0x4f0
[ 24.988406][ T303] ret_from_fork+0x1f/0x30
[ 24.992829][ T303]
[ 24.995157][ T303] Last potentially related work creation:
[ 25.000867][ T303] kasan_save_stack+0x3a/0x60
[ 25.005533][ T303] __kasan_record_aux_stack+0xd2/0x100
[ 25.010980][ T303] kasan_record_aux_stack_noalloc+0xb/0x10
[ 25.016776][ T303] call_rcu+0x10b/0xf60
[ 25.020922][ T303] blkg_release+0x23/0x30
[ 25.025243][ T303] percpu_ref_switch_to_atomic_rcu+0x611/0x620
[ 25.031391][ T303] rcu_do_batch+0x4c1/0xbf0
[ 25.035975][ T303] rcu_core+0x4a3/0xef0
[ 25.040124][ T303] rcu_core_si+0x9/0x10
[ 25.044272][ T303] handle_softirqs+0x250/0x560
[ 25.049033][ T303] run_ksoftirqd+0x28/0x40
[ 25.053455][ T303] smpboot_thread_fn+0x446/0x880
[ 25.058397][ T303] kthread+0x3f5/0x4f0
[ 25.062479][ T303] ret_from_fork+0x1f/0x30
[ 25.066890][ T303]
[ 25.069208][ T303] The buggy address belongs to the object at ffff88810adaa400
[ 25.069208][ T303] which belongs to the cache kmalloc-512 of size 512
[ 25.083345][ T303] The buggy address is located 0 bytes inside of
[ 25.083345][ T303] 512-byte region [ffff88810adaa400, ffff88810adaa600)
[ 25.096444][ T303] The buggy address belongs to the page:
[ 25.102074][ T303] page:ffffea00042b6a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10ada8
[ 25.112305][ T303] head:ffffea00042b6a00 order:2 compound_mapcount:0 compound_pincount:0
[ 25.120617][ T303] flags: 0x4000000000010200(slab|head|zone=1)
[ 25.126682][ T303] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100042f00
[ 25.135271][ T303] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 25.143841][ T303] page dumped because: kasan: bad access detected
[ 25.150274][ T303] page_owner tracks the page as allocated
[ 25.155983][ T303] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 2550316769, free_ts 0
[ 25.173853][ T303] post_alloc_hook+0x192/0x1b0
[ 25.178613][ T303] prep_new_page+0x1c/0x110
[ 25.183113][ T303] get_page_from_freelist+0x2c3a/0x2cd0
[ 25.188671][ T303] __alloc_pages+0x1a2/0x460
[ 25.193266][ T303] new_slab+0xa0/0x4d0
[ 25.197342][ T303] ___slab_alloc+0x3ac/0x840
[ 25.201920][ T303] __slab_alloc+0x49/0x90
[ 25.206247][ T303] kmem_cache_alloc_trace+0x146/0x270
[ 25.211611][ T303] blkg_alloc+0x82/0x5d0
[ 25.215845][ T303] blkcg_init_queue+0x29/0x210
[ 25.220598][ T303] blk_alloc_queue+0x3be/0x550
[ 25.225352][ T303] blk_mq_init_queue+0x37/0xd0
[ 25.230109][ T303] scsi_alloc_sdev+0x66c/0x9c0
[ 25.234863][ T303] scsi_probe_and_add_lun+0x180/0x35d0
[ 25.240316][ T303] __scsi_scan_target+0x1d2/0xb70
[ 25.245354][ T303] scsi_scan_host_selected+0x34e/0x600
[ 25.250814][ T303] page_owner free stack trace missing
[ 25.256184][ T303]
[ 25.258493][ T303] Memory state around the buggy address:
[ 25.264129][ T303] ffff88810adaa300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 25.272182][ T303] ffff88810adaa380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 25.280247][ T303] >ffff88810adaa400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.288296][ T303] ^
[ 25.292367][ T303] ffff88810adaa480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.300417][ T303] ffff88810adaa500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 25.308467][ T303] ==================================================================
[ 25.316513][ T303] Disabling lock debugging due to kernel taint
[ 25.323076][ T303] ------------[ cut here ]------------
[ 25.328583][ T303] WARNING: CPU: 0 PID: 303 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0
[ 25.339346][ T303] Modules linked in:
[ 25.342593][ T30] audit: type=1400 audit(1786944016.397:68): avc: denied { read } for pid=83 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
[ 25.343272][ T303] CPU: 0 PID: 303 Comm: syz-executor379 Tainted: G B syzkaller #0
[ 25.369312][ T30] audit: type=1400 audit(1786944016.397:69): avc: denied { search } for pid=83 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
[ 25.374126][ T303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[ 25.395714][ T30] audit: type=1400 audit(1786944016.397:70): avc: denied { write } for pid=83 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
[ 25.405321][ T303] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0
[ 25.426894][ T30] audit: type=1400 audit(1786944016.397:71): avc: denied { add_name } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1
[ 25.432757][ T303] Code: 5d c3 e8 2c 83 0b fd be 02 00 00 00 eb 0a e8 20 83 0b fd be 01 00 00 00 4c 89 f7 e8 33 02 f2 fd e9 0f ff ff ff e8 09 83 0b fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 f8 82 0b fd 4c 89 f7 be 03
[ 25.453577][ T30] audit: type=1400 audit(1786944016.397:72): avc: denied { create } for pid=83 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1
[ 25.472898][ T303] RSP: 0018:ffffc90000957b90 EFLAGS: 00010293
[ 25.472924][ T303] RAX: ffffffff845e33d7 RBX: ffff88810b470000 RCX: ffff88810b314f00
[ 25.493267][ T30] audit: type=1400 audit(1786944016.397:73): avc: denied { append open } for pid=83 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=5 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1
[ 25.499850][ T303] RDX: 0000000000000000 RSI: 000000000ad492c0 RDI: 000000000c04eb7d
[ 25.538147][ T303] RBP: ffffc90000957bb0 R08: 0000000000000003 R09: 0000000000000004
[ 25.546194][ T303] R10: dffffc0000000000 R11: fffffbfff0e18e4c R12: dffffc0000000000
[ 25.554180][ T303] R13: dffffc0000000000 R14: 000000000ad492c0 R15: ffff88810adaa400
[ 25.562191][ T303] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[ 25.571171][ T303] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 25.577783][ T303] CR2: 00007f0f04b0617c CR3: 000000010dd26000 CR4: 00000000003506b0
[ 25.585821][ T303] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 25.593786][ T303] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 25.601796][ T303] Call Trace:
[ 25.605084][ T303]
[ 25.608043][ T303] pppol2tp_release+0x150/0x2b0
[ 25.612907][ T303] sock_close+0xb8/0x200
[ 25.617193][ T303] ? sock_mmap+0xa0/0xa0
[ 25.621447][ T303] __fput+0x22b/0x900
[ 25.625461][ T303] ____fput+0x15/0x20
[ 25.629458][ T303] task_work_run+0x127/0x190
[ 25.634043][ T303] do_exit+0xb70/0x29a0
[ 25.638224][ T303] ? ptrace_stop+0x6d8/0xa70
[ 25.642840][ T303] ? put_task_struct+0x90/0x90
[ 25.647667][ T303] ? ptrace_notify+0x1ea/0x270
[ 25.652462][ T303] ? do_notify_parent+0x830/0x830
[ 25.657519][ T303] do_group_exit+0x149/0x310
[ 25.662127][ T303] __x64_sys_exit_group+0x3f/0x40
[ 25.667179][ T303] x64_sys_call+0x832/0x9a0
[ 25.671708][ T303] do_syscall_64+0x4c/0xa0
[ 25.676143][ T303] ? clear_bhb_loop+0x50/0xa0
[ 25.680828][ T303] ? clear_bhb_loop+0x50/0xa0
[ 25.685535][ T303] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 25.691442][ T303] RIP: 0033:0x7f0f04aa0305
[ 25.695879][ T303] Code: Unable to access opcode bytes at RIP 0x7f0f04aa02db.
[ 25.703253][ T303] RSP: 002b:00007ffdf2197c28 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
[ 25.711700][ T303] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f0f04aa0305
[ 25.719973][ T303] RDX: 00000000000000e7 RSI: ffffffffffffffd8 RDI: 0000000000000000
[ 25.727977][ T303] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdf2197db8
+++ exited with 0 +++
[ 25.735993][ T303] R10: 000000000000000a R11: 0000000000000206 R12: 0000000000000