ci2-android-5-15/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-15/syz-executor1461137712

<...>
Warning: Permanently added '10.128.1.75' (ED25519) to the list of known hosts.
execve("ci2-android-5-15/syz-executor1461137712", ["ci2-android-5-15/syz-executor1461137712"], 0x7ffe4e6aa450 /* 10 vars */) = 0
brk(NULL)                               = 0x55555b7f3000
brk(0x55555b7f3d40)                     = 0x55555b7f3d40
arch_prctl(ARCH_SET_FS, 0x55555b7f33c0) = 0
set_tid_address(0x55555b7f3690)         = 304
set_robust_list(0x55555b7f36a0, 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-executor1461137712", 4096) = 45
getrandom("\xa9\x0d\x89\x1f\xb0\x5f\xbc\xd2", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55555b7f3d40
brk(0x55555b814d40)                     = 0x55555b814d40
brk(0x55555b815000)                     = 0x55555b815000
mprotect(0x7f84f99de000, 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
unshare(CLONE_NEWPID)                   = 0
rt_sigprocmask(SIG_BLOCK, ~[], [], 8)   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555b7f3690) = 305
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-5-15/strace-static-x86_64: Process 305 attached
[pid   305] set_robust_list(0x55555b7f36a0, 24) = 0
[pid   305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   305] getppid()                   = 0
[pid   305] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   305] unshare(CLONE_NEWNS)        = 0
[pid   305] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   305] unshare(CLONE_NEWCGROUP)    = 0
[pid   305] unshare(CLONE_NEWUTS)       = 0
[pid   305] unshare(CLONE_SYSVSEM)      = 0
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] getpid()                    = 1
[pid   305] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid   305] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid   305] unshare(CLONE_NEWNET)       = 0
[pid   305] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   305] write(3, "0 65535", 7)      = 7
[pid   305] close(3)                    = 0
[pid   305] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   305] write(3, "100000", 6)       = 6
[pid   305] close(3)                    = 0
[pid   305] mkdir("./syz-tmp", 0777)    = 0
[   25.385081][   T30] audit: type=1400 audit(1789700424.642:64): avc:  denied  { execmem } for  pid=304 comm="syz-executor146" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   25.405941][   T30] audit: type=1400 audit(1789700424.662:65): avc:  denied  { mounton } for  pid=305 comm="syz-executor146" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   305] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   305] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   305] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   305] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   305] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   305] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   305] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   305] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   305] mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL, MS_RDONLY|MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   305] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   305] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   305] chdir("/")                  = 0
[pid   305] umount2("./pivot", MNT_DETACH) = 0
[pid   305] chroot("./newroot")         = 0
[pid   305] chdir("/")                  = 0
[pid   305] mkdir("/dev/gadgetfs", 0777) = 0
[   25.442395][   T30] audit: type=1400 audit(1789700424.702:66): avc:  denied  { mounton } for  pid=305 comm="syz-executor146" path="/root/syz-tmp" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   25.465552][   T30] audit: type=1400 audit(1789700424.702:67): avc:  denied  { mount } for  pid=305 comm="syz-executor146" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   305] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   305] mkdir("/dev/binderfs", 0777) = 0
[pid   305] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   305] symlink("/dev/binderfs", "./binderfs") = 0
[pid   305] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
executing program
[pid   305] write(1, "executing program\n", 18) = 18
[pid   305] socket(AF_PPPOX, SOCK_STREAM, 1) = 3
[pid   305] socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 4
[pid   305] connect(3, {sa_family=AF_PPPOX, sa_data="\x01\x00\x00\x00\x03\x00\x00\x00\x04\x00\x00\x00\x02\x00\x4e\x24\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x02\x80\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00"}, 46) = 0
[pid   305] ioctl(3, FS_IOC_GETFSMAP, 0) = -1 ENOTTY (Inappropriate ioctl for device)
[   25.471652][  T305] request_module fs-gadgetfs succeeded, but still no fs?
[   25.489789][   T30] audit: type=1400 audit(1789700424.702:68): avc:  denied  { mounton } for  pid=305 comm="syz-executor146" path="/root/syz-tmp/newroot/dev" dev="tmpfs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1
[   25.519633][   T30] audit: type=1400 audit(1789700424.712:69): avc:  denied  { mount } for  pid=305 comm="syz-executor146" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   25.541783][   T30] audit: type=1400 audit(1789700424.712:70): avc:  denied  { mounton } for  pid=305 comm="syz-executor146" path="/root/syz-tmp/newroot/sys/kernel/debug" dev="debugfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:debugfs_t tclass=dir permissive=1
[   25.541841][  T305] ==================================================================
[   25.568291][   T30] audit: type=1400 audit(1789700424.712:71): avc:  denied  { mounton } for  pid=305 comm="syz-executor146" path="/root/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14755 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   25.575107][  T305] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0
[   25.601918][   T30] audit: type=1400 audit(1789700424.712:72): avc:  denied  { unmount } for  pid=305 comm="syz-executor146" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   25.607982][  T305] Write of size 8 at addr ffff888124ef8950 by task syz-executor146/305
[   25.608001][  T305] 
[   25.608019][  T305] CPU: 0 PID: 305 Comm: syz-executor146 Not tainted syzkaller #0
[   25.628813][   T30] audit: type=1400 audit(1789700424.732:73): avc:  denied  { mounton } for  pid=305 comm="syz-executor146" path="/dev/gadgetfs" dev="devtmpfs" ino=556 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   25.636042][  T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   25.678966][  T305] Call Trace:
[   25.682254][  T305]  <TASK>
[   25.685203][  T305]  __dump_stack+0x21/0x30
[   25.689547][  T305]  dump_stack_lvl+0x110/0x170
[   25.694226][  T305]  ? show_regs_print_info+0x20/0x20
[   25.699440][  T305]  ? load_image+0x3f0/0x3f0
[   25.703943][  T305]  print_address_description+0x7f/0x2c0
[   25.709513][  T305]  ? mutex_lock+0x8e/0x1c0
[   25.713929][  T305]  kasan_report+0x10f/0x150
[   25.718441][  T305]  ? mutex_lock+0x8e/0x1c0
[   25.722879][  T305]  kasan_check_range+0x249/0x2a0
[   25.727824][  T305]  __kasan_check_write+0x14/0x20
[   25.732787][  T305]  mutex_lock+0x8e/0x1c0
[   25.737038][  T305]  ? wait_for_completion_killable_timeout+0x10/0x10
[   25.743663][  T305]  ? l2tp_session_put+0xaf/0x1a0
[   25.748618][  T305]  ? l2tp_session_delete+0x3a9/0x4a0
[   25.753916][  T305]  pppol2tp_release+0x178/0x2b0
[   25.758784][  T305]  sock_close+0xb8/0x200
[   25.763035][  T305]  ? sock_mmap+0xa0/0xa0
[   25.767287][  T305]  __fput+0x22b/0x900
[   25.771286][  T305]  ____fput+0x15/0x20
[   25.775288][  T305]  task_work_run+0x127/0x190
[   25.780087][  T305]  ptrace_notify+0x230/0x270
[   25.784739][  T305]  ? kick_process+0xdc/0x150
[   25.789344][  T305]  ? do_notify_parent+0x830/0x830
[   25.794396][  T305]  ? task_work_add+0x1b2/0x1e0
[   25.799182][  T305]  ? fput_many+0x161/0x1a0
[   25.803635][  T305]  ? fput+0x1a/0x20
[   25.807452][  T305]  ? filp_close+0x105/0x150
[   25.811972][  T305]  syscall_exit_work+0x87/0x160
[   25.816835][  T305]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   25.823099][  T305]  syscall_exit_to_user_mode+0xd/0x30
[   25.828481][  T305]  do_syscall_64+0x58/0xa0
[   25.832905][  T305]  ? clear_bhb_loop+0x50/0xa0
[   25.837590][  T305]  ? clear_bhb_loop+0x50/0xa0
[   25.842276][  T305]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.848181][  T305] RIP: 0033:0x7f84f995d557
[   25.852608][  T305] Code: 48 89 fa 4c 89 df e8 48 1f 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
[   25.872223][  T305] RSP: 002b:00007ffcf09eec60 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
[   25.880651][  T305] RAX: 0000000000000000 RBX: 000055555b7f33c0 RCX: 00007f84f995d557
[   25.888633][  T305] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
[   25.896613][  T305] RBP: 00007f84f99b3126 R08: 0000000000000000 R09: 0000000000000000
[   25.904594][  T305] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f84f99b4df0
[   25.912579][  T305] R13: 00007f84f99b308e R14: 00007f84f99debc0 R15: 0000000000000002
[   25.920565][  T305]  </TASK>
[   25.923596][  T305] 
[   25.925933][  T305] Allocated by task 305:
[   25.930183][  T305]  __kasan_kmalloc+0xd4/0x100
[   25.934881][  T305]  __kmalloc+0x13d/0x2c0
[   25.939135][  T305]  l2tp_session_create+0x39/0xb60
[   25.944199][  T305]  pppol2tp_connect+0xbf5/0x1640
[   25.949150][  T305]  __sys_connect+0x3cb/0x450
[   25.953751][  T305]  __x64_sys_connect+0x7a/0x90
[   25.958524][  T305]  x64_sys_call+0x7c/0x9a0
[   25.962955][  T305]  do_syscall_64+0x4c/0xa0
[   25.967381][  T305]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.973307][  T305] 
[   25.975643][  T305] Freed by task 305:
[   25.979647][  T305]  kasan_set_track+0x4a/0x70
[   25.984253][  T305]  kasan_set_free_info+0x23/0x40
[   25.989232][  T305]  ____kasan_slab_free+0x125/0x160
[   25.994367][  T305]  __kasan_slab_free+0x11/0x20
[   25.999160][  T305]  slab_free_freelist_hook+0xc2/0x190
[   26.004544][  T305]  kfree+0xc4/0x270
[   26.008365][  T305]  l2tp_session_put+0xaf/0x1a0
[   26.013142][  T305]  l2tp_session_delete+0x3a9/0x4a0
[   26.018362][  T305]  pppol2tp_release+0x169/0x2b0
[   26.023348][  T305]  sock_close+0xb8/0x200
[   26.027615][  T305]  __fput+0x22b/0x900
[   26.031620][  T305]  ____fput+0x15/0x20
[   26.035616][  T305]  task_work_run+0x127/0x190
[   26.040224][  T305]  ptrace_notify+0x230/0x270
[   26.044846][  T305]  syscall_exit_work+0x87/0x160
[   26.049708][  T305]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   26.055874][  T305]  syscall_exit_to_user_mode+0xd/0x30
[   26.061260][  T305]  do_syscall_64+0x58/0xa0
[   26.065686][  T305]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   26.071590][  T305] 
[   26.073925][  T305] The buggy address belongs to the object at ffff888124ef8800
[   26.073925][  T305]  which belongs to the cache kmalloc-512 of size 512
[   26.087986][  T305] The buggy address is located 336 bytes inside of
[   26.087986][  T305]  512-byte region [ffff888124ef8800, ffff888124ef8a00)
[   26.101363][  T305] The buggy address belongs to the page:
[   26.107013][  T305] page:ffffea000493be00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x124ef8
[   26.117267][  T305] head:ffffea000493be00 order:2 compound_mapcount:0 compound_pincount:0
[   26.125611][  T305] flags: 0x4000000000010200(slab|head|zone=1)
[   26.131735][  T305] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
[   26.140330][  T305] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[   26.148915][  T305] page dumped because: kasan: bad access detected
[   26.155328][  T305] page_owner tracks the page as allocated
[   26.161059][  T305] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd60c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 305, ts 25437324535, free_ts 25437169842
[   26.181820][  T305]  post_alloc_hook+0x192/0x1b0
[   26.186598][  T305]  prep_new_page+0x1c/0x110
[   26.191114][  T305]  get_page_from_freelist+0x2c3a/0x2cd0
[   26.196669][  T305]  __alloc_pages+0x1a2/0x460
[   26.201270][  T305]  new_slab+0xa0/0x4d0
[   26.205347][  T305]  ___slab_alloc+0x3ac/0x840
[   26.209947][  T305]  __slab_alloc+0x49/0x90
[   26.214284][  T305]  __kmalloc+0x16a/0x2c0
[   26.218566][  T305]  kvmalloc_node+0x211/0x320
[   26.223167][  T305]  alloc_netdev_mqs+0x653/0xe20
[   26.228031][  T305]  ip6_tnl_init_net+0x15d/0x3c0
[   26.232890][  T305]  ops_init+0x2c0/0x470
[   26.237052][  T305]  setup_net+0x331/0xa30
[   26.241304][  T305]  copy_net_ns+0x355/0x5c0
[   26.245741][  T305]  create_new_namespaces+0x3a8/0x660
[   26.251036][  T305]  unshare_nsproxy_namespaces+0x120/0x170
[   26.256767][  T305] page last free stack trace:
[   26.261441][  T305]  free_unref_page_prepare+0x5fa/0x600
[   26.266906][  T305]  free_unref_page+0xae/0x540
[   26.271610][  T305]  __free_pages+0x6c/0x100
[   26.276038][  T305]  free_pages+0x82/0x90
[   26.280202][  T305]  __stack_depot_save+0x453/0x480
[   26.285239][  T305]  __kasan_kmalloc+0xe6/0x100
[   26.289927][  T305]  __kmalloc+0x13d/0x2c0
[   26.294208][  T305]  __register_sysctl_table+0xa35/0x1240
[   26.299765][  T305]  register_net_sysctl+0x21d/0x230
[   26.304888][  T305]  neigh_sysctl_register+0x9a9/0xa90
[   26.310189][  T305]  addrconf_sysctl_register+0xb3/0x1a0
[   26.315676][  T305]  ipv6_add_dev+0xc09/0x1150
[   26.320301][  T305]  addrconf_notify+0x582/0xe00
[   26.325084][  T305]  raw_notifier_call_chain+0x90/0x100
[   26.330479][  T305]  call_netdevice_notifiers+0x119/0x190
[   26.336075][  T305]  register_netdevice+0x110a/0x1490
[   26.341293][  T305] 
[   26.343632][  T305] Memory state around the buggy address:
[   26.349271][  T305]  ffff888124ef8800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.357348][  T305]  ffff888124ef8880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.365424][  T305] >ffff888124ef8900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.373501][  T305]                                                  ^
[   26.380194][  T305]  ffff888124ef8980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.388275][  T305]  ffff888124ef8a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[pid   305] close(3)                    = 0
[pid   305] close(4)                    = 0
[pid   305] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   305] exit_group(1)               = ?
[pid   305] +++ exited with 1 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=305, si_uid=0, si_status=1, si_utime=0, si_stime=4 /* 0.04 s */} ---
exit_group(0)                           = ?
+++ exited with 0 +++
[