ci2-android-5-15/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-15/syz-executor3323224318

<...>

syzkaller login: [    7.603922][  T109] udevd (109) used greatest stack depth: 22888 bytes left
[   14.918200][   T30] kauditd_printk_skb: 48 callbacks suppressed
[   14.918213][   T30] audit: type=1400 audit(1788399280.496:59): avc:  denied  { transition } for  pid=223 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.923119][   T30] audit: type=1400 audit(1788399280.496:60): avc:  denied  { noatsecure } for  pid=223 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.926320][   T30] audit: type=1400 audit(1788399280.496:61): avc:  denied  { write } for  pid=223 comm="sh" path="pipe:[3302]" dev="pipefs" ino=3302 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   14.930106][   T30] audit: type=1400 audit(1788399280.496:62): avc:  denied  { rlimitinh } for  pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.933020][   T30] audit: type=1400 audit(1788399280.496:63): avc:  denied  { siginh } for  pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.935280][  T220] sshd-session (220) used greatest stack depth: 22184 bytes left
[   16.670049][  T231] scp (231) used greatest stack depth: 21472 bytes left
Warning: Permanently added '10.128.0.204' (ED25519) to the list of known hosts.
execve("ci2-android-5-15/syz-executor3323224318", ["ci2-android-5-15/syz-executor3323224318"], 0x7ffcf53e1060 /* 10 vars */) = 0
brk(NULL)                               = 0x555566baa000
brk(0x555566baad40)                     = 0x555566baad40
arch_prctl(ARCH_SET_FS, 0x555566baa3c0) = 0
set_tid_address(0x555566baa690)         = 303
set_robust_list(0x555566baa6a0, 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-executor3323224318", 4096) = 45
getrandom("\x4f\x6d\xe5\x00\xce\x15\x18\xc2", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555566baad40
brk(0x555566bcbd40)                     = 0x555566bcbd40
brk(0x555566bcc000)                     = 0x555566bcc000
mprotect(0x7fc1620f6000, 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=0x555566baa690) = 304
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-5-15/strace-static-x86_64: Process 304 attached
[pid   304] set_robust_list(0x555566baa6a0, 24) = 0
[pid   304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   304] getppid()                   = 0
[pid   304] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   304] unshare(CLONE_NEWNS)        = 0
[pid   304] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   304] unshare(CLONE_NEWCGROUP)    = 0
[pid   304] unshare(CLONE_NEWUTS)       = 0
[pid   304] unshare(CLONE_SYSVSEM)      = 0
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] getpid()                    = 1
[pid   304] 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   304] 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   304] unshare(CLONE_NEWNET)       = 0
[pid   304] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   304] write(3, "0 65535", 7)      = 7
[pid   304] close(3)                    = 0
[pid   304] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   304] write(3, "100000", 6)       = 6
[pid   304] close(3)                    = 0
[pid   304] mkdir("./syz-tmp", 0777)    = 0
[pid   304] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   304] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   304] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   304] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   304] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   304] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   304] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] 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   304] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   304] 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   304] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   304] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   304] chdir("/")                  = 0
[   24.311220][   T30] audit: type=1400 audit(1788399289.896:64): avc:  denied  { execmem } for  pid=303 comm="syz-executor332" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   24.330788][   T30] audit: type=1400 audit(1788399289.896:65): avc:  denied  { mounton } for  pid=304 comm="syz-executor332" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   304] umount2("./pivot", MNT_DETACH) = 0
[pid   304] chroot("./newroot")         = 0
[pid   304] chdir("/")                  = 0
[pid   304] mkdir("/dev/gadgetfs", 0777) = 0
[pid   304] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   304] mkdir("/dev/binderfs", 0777) = 0
[pid   304] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   304] symlink("/dev/binderfs", "./binderfs") = 0
[pid   304] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
executing program
[pid   304] write(1, "executing program\n", 18) = 18
[pid   304] socket(AF_PPPOX, SOCK_STREAM, 1) = 3
[pid   304] socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 4
[   24.352981][   T30] audit: type=1400 audit(1788399289.916:66): avc:  denied  { mounton } for  pid=304 comm="syz-executor332" 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
[   24.375933][   T30] audit: type=1400 audit(1788399289.936:67): avc:  denied  { mount } for  pid=304 comm="syz-executor332" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   24.378578][  T304] request_module fs-gadgetfs succeeded, but still no fs?
[pid   304] connect(3, {sa_family=AF_PPPOX, sa_data="\x01\x00\x00\x00\x03\x00\x00\x00\x04\x00\x00\x00\x02\x00\x4e\x23\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00"}, 46) = 0
[pid   304] ioctl(3, SIOCGIFINDEX, NULL) = -1 EFAULT (Bad address)
[pid   304] exit_group(1)               = ?
[   24.398090][   T30] audit: type=1400 audit(1788399289.936:68): avc:  denied  { mounton } for  pid=304 comm="syz-executor332" 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
[   24.429104][   T30] audit: type=1400 audit(1788399289.936:69): avc:  denied  { mount } for  pid=304 comm="syz-executor332" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   24.451068][   T30] audit: type=1400 audit(1788399289.936:70): avc:  denied  { mounton } for  pid=304 comm="syz-executor332" 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
[   24.476416][  T304] ==================================================================
[   24.479425][   T30] audit: type=1400 audit(1788399289.936:71): avc:  denied  { mounton } for  pid=304 comm="syz-executor332" path="/root/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=15191 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   24.484482][  T304] BUG: KASAN: use-after-free in mutex_lock+0x8e/0x1c0
[   24.510984][   T30] audit: type=1400 audit(1788399289.936:72): avc:  denied  { unmount } for  pid=304 comm="syz-executor332" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   24.517669][  T304] Write of size 8 at addr ffff88810ac97950 by task syz-executor332/304
[   24.537306][   T30] audit: type=1400 audit(1788399289.966:73): avc:  denied  { mounton } for  pid=304 comm="syz-executor332" path="/dev/gadgetfs" dev="devtmpfs" ino=556 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   24.545458][  T304] 
[   24.545475][  T304] CPU: 1 PID: 304 Comm: syz-executor332 Not tainted syzkaller #0
[   24.578266][  T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   24.588325][  T304] Call Trace:
[   24.591584][  T304]  <TASK>
[   24.594491][  T304]  __dump_stack+0x21/0x30
[   24.598797][  T304]  dump_stack_lvl+0x110/0x170
[   24.603446][  T304]  ? show_regs_print_info+0x20/0x20
[   24.608618][  T304]  ? load_image+0x3f0/0x3f0
[   24.613093][  T304]  print_address_description+0x7f/0x2c0
[   24.618611][  T304]  ? mutex_lock+0x8e/0x1c0
[   24.623002][  T304]  kasan_report+0x10f/0x150
[   24.627482][  T304]  ? mutex_lock+0x8e/0x1c0
[   24.631873][  T304]  kasan_check_range+0x249/0x2a0
[   24.636781][  T304]  __kasan_check_write+0x14/0x20
[   24.641693][  T304]  mutex_lock+0x8e/0x1c0
[   24.645913][  T304]  ? wait_for_completion_killable_timeout+0x10/0x10
[   24.652475][  T304]  ? l2tp_session_put+0xaf/0x1a0
[   24.657389][  T304]  ? l2tp_session_delete+0x3a9/0x4a0
[   24.662649][  T304]  pppol2tp_release+0x178/0x2b0
[   24.667473][  T304]  sock_close+0xb8/0x200
[   24.671690][  T304]  ? sock_mmap+0xa0/0xa0
[   24.675913][  T304]  __fput+0x22b/0x900
[   24.679879][  T304]  ____fput+0x15/0x20
[   24.683841][  T304]  task_work_run+0x127/0x190
[   24.688410][  T304]  do_exit+0xb70/0x29a0
[   24.692546][  T304]  ? ptrace_stop+0x6d8/0xa70
[   24.697117][  T304]  ? put_task_struct+0x90/0x90
[   24.701861][  T304]  ? ptrace_notify+0x1ea/0x270
[   24.706606][  T304]  ? do_notify_parent+0x830/0x830
[   24.711614][  T304]  do_group_exit+0x149/0x310
[   24.716189][  T304]  __x64_sys_exit_group+0x3f/0x40
[   24.721197][  T304]  x64_sys_call+0x832/0x9a0
[   24.725682][  T304]  do_syscall_64+0x4c/0xa0
[   24.730077][  T304]  ? clear_bhb_loop+0x50/0xa0
[   24.734737][  T304]  ? clear_bhb_loop+0x50/0xa0
[   24.739394][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   24.745268][  T304] RIP: 0033:0x7fc162061c05
[   24.749662][  T304] Code: Unable to access opcode bytes at RIP 0x7fc162061bdb.
[   24.757012][  T304] RSP: 002b:00007ffde0ad15c8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
[   24.765408][  T304] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fc162061c05
[   24.773363][  T304] RDX: 00000000000000e7 RSI: ffffffffffffffd8 RDI: 0000000000000001
[   24.781314][  T304] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006
[   24.789262][  T304] R10: 0000000000000006 R11: 0000000000000206 R12: 0000000000000001
[   24.797217][  T304] R13: 00007fc1620fb110 R14: 00007fc1620fd3a8 R15: 00007fc1620fd3c0
[   24.805173][  T304]  </TASK>
[   24.808176][  T304] 
[   24.810480][  T304] Allocated by task 304:
[   24.814703][  T304]  __kasan_kmalloc+0xd4/0x100
[   24.819366][  T304]  __kmalloc+0x13d/0x2c0
[   24.823592][  T304]  l2tp_session_create+0x39/0xb60
[   24.828598][  T304]  pppol2tp_connect+0xbf5/0x1640
[   24.833519][  T304]  __sys_connect+0x3cb/0x450
[   24.838090][  T304]  __x64_sys_connect+0x7a/0x90
[   24.842837][  T304]  x64_sys_call+0x7c/0x9a0
[   24.847241][  T304]  do_syscall_64+0x4c/0xa0
[   24.851640][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   24.857516][  T304] 
[   24.859825][  T304] Freed by task 304:
[   24.863692][  T304]  kasan_set_track+0x4a/0x70
[   24.868261][  T304]  kasan_set_free_info+0x23/0x40
[   24.873180][  T304]  ____kasan_slab_free+0x125/0x160
[   24.878270][  T304]  __kasan_slab_free+0x11/0x20
[   24.883010][  T304]  slab_free_freelist_hook+0xc2/0x190
[   24.888364][  T304]  kfree+0xc4/0x270
[   24.892163][  T304]  l2tp_session_put+0xaf/0x1a0
[   24.896922][  T304]  l2tp_session_delete+0x3a9/0x4a0
[   24.902029][  T304]  pppol2tp_release+0x169/0x2b0
[   24.906862][  T304]  sock_close+0xb8/0x200
[   24.911088][  T304]  __fput+0x22b/0x900
[   24.915055][  T304]  ____fput+0x15/0x20
[   24.919014][  T304]  task_work_run+0x127/0x190
[   24.923641][  T304]  do_exit+0xb70/0x29a0
[   24.927799][  T304]  do_group_exit+0x149/0x310
[   24.932386][  T304]  __x64_sys_exit_group+0x3f/0x40
[   24.937395][  T304]  x64_sys_call+0x832/0x9a0
[   24.941878][  T304]  do_syscall_64+0x4c/0xa0
[   24.946273][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   24.952148][  T304] 
[   24.954455][  T304] Last potentially related work creation:
[   24.960143][  T304]  kasan_save_stack+0x3a/0x60
[   24.964800][  T304]  __kasan_record_aux_stack+0xd2/0x100
[   24.970242][  T304]  kasan_record_aux_stack_noalloc+0xb/0x10
[   24.976027][  T304]  call_rcu+0x10b/0xf60
[   24.980163][  T304]  blkg_release+0x23/0x30
[   24.984471][  T304]  percpu_ref_switch_to_atomic_rcu+0x611/0x620
[   24.990610][  T304]  rcu_do_batch+0x4c1/0xbf0
[   24.995114][  T304]  rcu_core+0x4a3/0xef0
[   24.999257][  T304]  rcu_core_si+0x9/0x10
[   25.003407][  T304]  handle_softirqs+0x250/0x560
[   25.008155][  T304]  run_ksoftirqd+0x28/0x40
[   25.012669][  T304]  smpboot_thread_fn+0x446/0x880
[   25.017789][  T304]  kthread+0x3f5/0x4f0
[   25.021841][  T304]  ret_from_fork+0x1f/0x30
[   25.026246][  T304] 
[   25.028553][  T304] The buggy address belongs to the object at ffff88810ac97800
[   25.028553][  T304]  which belongs to the cache kmalloc-512 of size 512
[   25.042589][  T304] The buggy address is located 336 bytes inside of
[   25.042589][  T304]  512-byte region [ffff88810ac97800, ffff88810ac97a00)
[   25.055857][  T304] The buggy address belongs to the page:
[   25.062003][  T304] page:ffffea00042b2500 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10ac94
[   25.072734][  T304] head:ffffea00042b2500 order:2 compound_mapcount:0 compound_pincount:0
[   25.081078][  T304] flags: 0x4000000000010200(slab|head|zone=1)
[   25.087149][  T304] raw: 4000000000010200 ffffea00042b2300 0000000300000003 ffff888100042f00
[   25.095817][  T304] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[   25.104558][  T304] page dumped because: kasan: bad access detected
[   25.111244][  T304] page_owner tracks the page as allocated
[   25.117060][  T304] 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 1911451806, free_ts 0
[   25.135116][  T304]  post_alloc_hook+0x192/0x1b0
[   25.139903][  T304]  prep_new_page+0x1c/0x110
[   25.144398][  T304]  get_page_from_freelist+0x2c3a/0x2cd0
[   25.149944][  T304]  __alloc_pages+0x1a2/0x460
[   25.154532][  T304]  new_slab+0xa0/0x4d0
[   25.158585][  T304]  ___slab_alloc+0x3ac/0x840
[   25.163161][  T304]  __slab_alloc+0x49/0x90
[   25.167477][  T304]  kmem_cache_alloc_trace+0x146/0x270
[   25.172838][  T304]  blkg_alloc+0x82/0x5d0
[   25.177062][  T304]  blkcg_init_queue+0x29/0x210
[   25.181811][  T304]  blk_alloc_queue+0x3be/0x550
[   25.186566][  T304]  blk_mq_init_queue+0x37/0xd0
[   25.191315][  T304]  scsi_alloc_sdev+0x66c/0x9c0
[   25.196152][  T304]  scsi_probe_and_add_lun+0x180/0x35d0
[   25.201775][  T304]  __scsi_scan_target+0x1d2/0xb70
[   25.206782][  T304]  scsi_scan_host_selected+0x34e/0x600
[   25.212228][  T304] page_owner free stack trace missing
[   25.217578][  T304] 
[   25.219882][  T304] Memory state around the buggy address:
[   25.225491][  T304]  ffff88810ac97800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.233716][  T304]  ffff88810ac97880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.241767][  T304] >ffff88810ac97900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   25.249812][  T304]                                                  ^
[   25.256480][  T304]  ffff88810ac97980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[pid   304] +++ exited with 1 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=304, si_uid=0, si_status=1, si_utime=0, si_stime=7 /* 0.07 s */} ---
exit_group(0)                           = ?
+++ exited with 0 +++
[   25.264