ci2-android-5-15/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-15/syz-executor2011735905 <...> Warning: Permanently added '10.128.1.190' (ED25519) to the list of known hosts. execve("ci2-android-5-15/syz-executor2011735905", ["ci2-android-5-15/syz-executor2011735905"], 0x7ffe8302f000 /* 10 vars */) = 0 brk(NULL) = 0x555584a40000 brk(0x555584a40e00) = 0x555584a40e00 arch_prctl(ARCH_SET_FS, 0x555584a40480) = 0 set_tid_address(0x555584a40750) = 303 set_robust_list(0x555584a40760, 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-executor2011735905", 4096) = 45 getrandom("\x50\xf0\xfb\xe9\xc8\x40\xbb\xf5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555584a40e00 brk(0x555584a61e00) = 0x555584a61e00 brk(0x555584a62000) = 0x555584a62000 mprotect(0x7f9267a7b000, 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 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555584a40750) = 304 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/failslab/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/task-filter", O_WRONLY|O_CLOEXEC) = 3 write(3, "Y", 1) = 1 close(3) = 0 ci2-android-5-15/strace-static-x86_64: Process 304 attached [pid 304] set_robust_list(0x555584a40760, 24) = 0 [pid 304] rt_sigprocmask(SIG_SETMASK, [] [pid 303] openat(AT_FDCWD, "/sys/kernel/debug/fail_usercopy/task-filter", O_WRONLY|O_CLOEXEC [pid 304] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 303] <... openat resumed>) = 3 [pid 303] write(3, "Y", 1) = 1 [pid 303] close(3) = 0 [pid 303] openat(AT_FDCWD, "/sys/kernel/debug/fail_make_request/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 303] write(3, "Y", 1) = 1 [pid 303] close(3) = 0 [pid 303] openat(AT_FDCWD, "/sys/kernel/debug/fail_io_timeout/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 303] write(3, "Y", 1) = 1 [pid 303] close(3) = 0 [pid 303] openat(AT_FDCWD, "/sys/kernel/debug/fail_iommufd/task-filter", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 303] write(3, "0", 1) = 1 [pid 303] close(3) = 0 [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 303] write(3, "304", 3) = 3 [pid 303] close(3) = 0 [pid 303] kill(304, SIGKILL) = 0 [pid 304] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=304, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f92679d6160, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f92679d8d30}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f92679d6160, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f92679d8d30}, NULL, 8) = 0 getrandom("\x6b\xac\x22\x59\x6a\xda\x84\x42", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.FwsuTC", 0700) = 0 chmod("./syzkaller.FwsuTC", 0777) = 0 chdir("./syzkaller.FwsuTC") = 0 executing program write(1, "executing program\n", 18) = 18 socket(AF_PPPOX, SOCK_STREAM, 1) = 3 socket(AF_INET, 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\x01\x00\x00\x00\x00\x00\x00\x00\x0a\x00\xff\xfe\x00\x00\x00\x00\xfe\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\x00\x00\x00\x00"}, 50) = 0 ioctl(3, BTRFS_IOC_BALANCE_PROGRESS, NULL) = -1 ENOTTY (Inappropriate ioctl for device) exit_group(0) = ? [ 25.301749][ T30] audit: type=1400 audit(1791382619.771:64): avc: denied { execmem } for pid=303 comm="syz-executor201" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.327477][ T30] audit: type=1400 audit(1791382619.791:65): avc: denied { create } for pid=303 comm="syz-executor201" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=pppox_socket permissive=1 [ 25.347925][ T30] audit: type=1400 audit(1791382619.801:66): avc: denied { connect } for pid=303 comm="syz-executor201" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=pppox_socket permissive=1 [ 25.367883][ T303] ================================================================== [ 25.368104][ T30] audit: type=1400 audit(1791382619.811:67): avc: denied { ioctl } for pid=303 comm="syz-executor201" path="socket:[15096]" dev="sockfs" ino=15096 ioctlcmd=0x9422 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=pppox_socket permissive=1 [ 25.375950][ T303] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 25.408886][ T303] Read of size 4 at addr ffff88810b04f400 by task syz-executor201/303 [ 25.417011][ T303] [ 25.419322][ T303] CPU: 1 PID: 303 Comm: syz-executor201 Not tainted syzkaller #0 [ 25.427011][ T303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 25.437048][ T303] Call Trace: [ 25.440328][ T303] [ 25.443256][ T303] __dump_stack+0x21/0x30 [ 25.447575][ T303] dump_stack_lvl+0x110/0x170 [ 25.452226][ T303] ? show_regs_print_info+0x20/0x20 [ 25.457398][ T303] ? load_image+0x3f0/0x3f0 [ 25.461873][ T303] ? __local_bh_enable_ip+0x58/0x80 [ 25.467049][ T303] print_address_description+0x7f/0x2c0 [ 25.472571][ T303] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 25.478268][ T303] kasan_report+0x10f/0x150 [ 25.482743][ T303] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 25.488432][ T303] __asan_report_load4_noabort+0x14/0x20 [ 25.494050][ T303] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 25.499570][ T303] pppol2tp_release+0x150/0x2b0 [ 25.504394][ T303] sock_close+0xb8/0x200 [ 25.508608][ T303] ? sock_mmap+0xa0/0xa0 [ 25.512823][ T303] __fput+0x22b/0x900 [ 25.516781][ T303] ____fput+0x15/0x20 [ 25.520733][ T303] task_work_run+0x127/0x190 [ 25.525295][ T303] do_exit+0xb70/0x29a0 [ 25.529424][ T303] ? ptrace_stop+0x6d8/0xa70 [ 25.533993][ T303] ? put_task_struct+0x90/0x90 [ 25.538731][ T303] ? ptrace_notify+0x1ea/0x270 [ 25.543490][ T303] ? do_notify_parent+0x830/0x830 [ 25.548487][ T303] do_group_exit+0x149/0x310 [ 25.553049][ T303] __x64_sys_exit_group+0x3f/0x40 [ 25.558052][ T303] x64_sys_call+0x832/0x9a0 [ 25.562527][ T303] do_syscall_64+0x4c/0xa0 [ 25.566916][ T303] ? clear_bhb_loop+0x50/0xa0 [ 25.571564][ T303] ? clear_bhb_loop+0x50/0xa0 [ 25.576213][ T303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.582077][ T303] RIP: 0033:0x7f92679e6e85 [ 25.586469][ T303] Code: Unable to access opcode bytes at RIP 0x7f92679e6e5b. [ 25.593820][ T303] RSP: 002b:00007ffdefe89a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 25.602215][ T303] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f92679e6e85 [ 25.610165][ T303] RDX: 00000000000000e7 RSI: ffffffffffffffd8 RDI: 0000000000000000 [ 25.618202][ T303] RBP: 0000000000000000 R08: 0000000000000000 R09: 6c616b7a79732f2e [ 25.626146][ T303] R10: 6c616b7a79732f2e R11: 0000000000000206 R12: 0000000000000000 [ 25.634091][ T303] R13: 00007f9267a80110 R14: 00007f9267a82408 R15: 00007f9267a82420 [ 25.642041][ T303] [ 25.645040][ T303] [ 25.647338][ T303] Allocated by task 303: [ 25.651548][ T303] __kasan_kmalloc+0xd4/0x100 [ 25.656202][ T303] __kmalloc+0x13d/0x2c0 [ 25.660419][ T303] l2tp_session_create+0x39/0xb60 [ 25.665415][ T303] pppol2tp_connect+0xbf5/0x1640 [ 25.670323][ T303] __sys_connect+0x3cb/0x450 [ 25.674903][ T303] __x64_sys_connect+0x7a/0x90 [ 25.679636][ T303] x64_sys_call+0x7c/0x9a0 [ 25.684023][ T303] do_syscall_64+0x4c/0xa0 [ 25.688410][ T303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.694276][ T303] [ 25.696576][ T303] Freed by task 45: [ 25.700350][ T303] kasan_set_track+0x4a/0x70 [ 25.704937][ T303] kasan_set_free_info+0x23/0x40 [ 25.709846][ T303] ____kasan_slab_free+0x125/0x160 [ 25.714931][ T303] __kasan_slab_free+0x11/0x20 [ 25.719665][ T303] slab_free_freelist_hook+0xc2/0x190 [ 25.725004][ T303] kfree+0xc4/0x270 [ 25.728783][ T303] l2tp_session_put+0xaf/0x1a0 [ 25.733521][ T303] l2tp_session_delete+0x3a9/0x4a0 [ 25.738605][ T303] l2tp_tunnel_del_work+0x180/0x3d0 [ 25.743776][ T303] process_one_work+0x6c8/0xbb0 [ 25.748601][ T303] worker_thread+0xaa0/0x1250 [ 25.753255][ T303] kthread+0x3f5/0x4f0 [ 25.757295][ T303] ret_from_fork+0x1f/0x30 [ 25.761684][ T303] [ 25.763981][ T303] Last potentially related work creation: [ 25.769667][ T303] kasan_save_stack+0x3a/0x60 [ 25.774322][ T303] __kasan_record_aux_stack+0xd2/0x100 [ 25.779755][ T303] kasan_record_aux_stack_noalloc+0xb/0x10 [ 25.785533][ T303] call_rcu+0x10b/0xf60 [ 25.789662][ T303] blkg_release+0x23/0x30 [ 25.793975][ T303] percpu_ref_switch_to_atomic_rcu+0x611/0x620 [ 25.800101][ T303] rcu_do_batch+0x4c1/0xbf0 [ 25.804577][ T303] rcu_core+0x4a3/0xef0 [ 25.808704][ T303] rcu_core_si+0x9/0x10 [ 25.812831][ T303] handle_softirqs+0x250/0x560 [ 25.817564][ T303] run_ksoftirqd+0x28/0x40 [ 25.821950][ T303] smpboot_thread_fn+0x446/0x880 [ 25.826859][ T303] kthread+0x3f5/0x4f0 [ 25.830898][ T303] ret_from_fork+0x1f/0x30 [ 25.835287][ T303] [ 25.837586][ T303] The buggy address belongs to the object at ffff88810b04f400 [ 25.837586][ T303] which belongs to the cache kmalloc-512 of size 512 [ 25.851610][ T303] The buggy address is located 0 bytes inside of [ 25.851610][ T303] 512-byte region [ffff88810b04f400, ffff88810b04f600) [ 25.864683][ T303] The buggy address belongs to the page: [ 25.870292][ T303] page:ffffea00042c1300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10b04c [ 25.880512][ T303] head:ffffea00042c1300 order:2 compound_mapcount:0 compound_pincount:0 [ 25.888806][ T303] flags: 0x4000000000010200(slab|head|zone=1) [ 25.894860][ T303] raw: 4000000000010200 0000000000000000 0000000100000001 ffff888100042f00 [ 25.903419][ T303] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 25.911969][ T303] page dumped because: kasan: bad access detected [ 25.918368][ T303] page_owner tracks the page as allocated [ 25.924085][ 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 1968975270, free_ts 0 [ 25.941965][ T303] post_alloc_hook+0x192/0x1b0 [ 25.946714][ T303] prep_new_page+0x1c/0x110 [ 25.951210][ T303] get_page_from_freelist+0x2c3a/0x2cd0 [ 25.956732][ T303] __alloc_pages+0x1a2/0x460 [ 25.961340][ T303] new_slab+0xa0/0x4d0 [ 25.965389][ T303] ___slab_alloc+0x3ac/0x840 [ 25.969953][ T303] __slab_alloc+0x49/0x90 [ 25.974255][ T303] kmem_cache_alloc_trace+0x146/0x270 [ 25.979618][ T303] blkg_alloc+0x82/0x5d0 [ 25.983840][ T303] blkcg_init_queue+0x29/0x210 [ 25.988574][ T303] blk_alloc_queue+0x3be/0x550 [ 25.993313][ T303] blk_mq_init_queue+0x37/0xd0 [ 25.998053][ T303] scsi_alloc_sdev+0x66c/0x9c0 [ 26.002796][ T303] scsi_probe_and_add_lun+0x180/0x35d0 [ 26.008226][ T303] __scsi_scan_target+0x1d2/0xb70 [ 26.013222][ T303] scsi_scan_host_selected+0x34e/0x600 [ 26.018656][ T303] page_owner free stack trace missing [ 26.023994][ T303] [ 26.026291][ T303] Memory state around the buggy address: [ 26.031892][ T303] ffff88810b04f300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.039926][ T303] ffff88810b04f380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.047974][ T303] >ffff88810b04f400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.056005][ T303] ^ [ 26.060044][ T303] ffff88810b04f480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.068077][ T303] ffff88810b04f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.076129][ T303] ================================================================== [ 26.084250][ T303] Disabling lock debugging due to kernel taint [ 26.090675][ T303] ------------[ cut here ]------------ [ 26.096131][ T303] WARNING: CPU: 1 PID: 303 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 [ 26.100976][ T30] audit: type=1400 audit(1791382620.561:68): 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 [ 26.106214][ T303] Modules linked in: [ 26.127895][ T30] audit: type=1400 audit(1791382620.561:69): 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 [ 26.131680][ T303] CPU: 1 PID: 303 Comm: syz-executor201 Tainted: G B syzkaller #0 [ 26.152964][ T30] audit: type=1400 audit(1791382620.561:70): 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 [ 26.161945][ T303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 26.183245][ T30] audit: type=1400 audit(1791382620.561:71): 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 [ 26.193262][ T303] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 [ 26.213792][ T30] audit: type=1400 audit(1791382620.561:72): 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 [ 26.219973][ T303] Code: 5d c3 e8 3c ac 0a fd be 02 00 00 00 eb 0a e8 30 ac 0a fd be 01 00 00 00 4c 89 f7 e8 73 2e f1 fd e9 0f ff ff ff e8 19 ac 0a fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 08 ac 0a fd 4c 89 f7 be 03 [ 26.240595][ T30] audit: type=1400 audit(1791382620.561:73): 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 [ 26.260077][ T303] RSP: 0018:ffffc90000987b90 EFLAGS: 00010293 [ 26.288746][ T303] RAX: ffffffff845f2f47 RBX: ffff888107fdd000 RCX: ffff88810b2a9400 [ 26.296738][ T303] RDX: 0000000000000000 RSI: 000000001e2fc600 RDI: 000000000c04eb7d [ 26.304711][ T303] RBP: ffffc90000987bb0 R08: 0000000000000003 R09: 0000000000000004 [ 26.312683][ T303] R10: dffffc0000000000 R11: fffffbfff0e1904c R12: dffffc0000000000 [ 26.320683][ T303] R13: dffffc0000000000 R14: 000000001e2fc600 R15: ffff88810b04f400 [ 26.328633][ T303] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.337559][ T303] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.344153][ T303] CR2: 00007f9267a81ae0 CR3: 000000010d6fa000 CR4: 00000000003506a0 [ 26.352136][ T303] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.360112][ T303] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.368060][ T303] Call Trace: [ 26.371335][ T303] [ 26.374254][ T303] pppol2tp_release+0x150/0x2b0 [ 26.379084][ T303] sock_close+0xb8/0x200 [ 26.383336][ T303] ? sock_mmap+0xa0/0xa0 [ 26.387596][ T303] __fput+0x22b/0x900 [ 26.391577][ T303] ____fput+0x15/0x20 [ 26.395557][ T303] task_work_run+0x127/0x190 [ 26.400167][ T303] do_exit+0xb70/0x29a0 [ 26.404321][ T303] ? ptrace_stop+0x6d8/0xa70 [ 26.408889][ T303] ? put_task_struct+0x90/0x90 [ 26.413651][ T303] ? ptrace_notify+0x1ea/0x270 [ 26.418407][ T303] ? do_notify_parent+0x830/0x830 [ 26.423429][ T303] do_group_exit+0x149/0x310 [ 26.428026][ T303] __x64_sys_exit_group+0x3f/0x40 [ 26.433056][ T303] x64_sys_call+0x832/0x9a0 [ 26.437551][ T303] do_syscall_64+0x4c/0xa0 [ 26.441970][ T303] ? clear_bhb_loop+0x50/0xa0 [ 26.446645][ T303] ? clear_bhb_loop+0x50/0xa0 [ 26.451320][ T303] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.457207][ T303] RIP: 0033:0x7f92679e6e85 [ 26.461638][ T303] Code: Unable to access opcode bytes at RIP 0x7f92679e6e5b. [ 26.468991][ T303] RSP: 002b:00007ffdefe89a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 26.477404][ T303] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f92679e6e85 [ 26.485394][ T303] RDX: 00000000000000e7 RSI: ffffffffffffffd8 RDI: 0000000000000000 [ 26.493378][ T303] RBP: 0000000000000000 R08: 0000000000000000 R09: 6c616b7a79732f2e +++ exited with 0 +++ [ 26.501352][ T303] R10: 6c616b7a79732f2e R11: 0000000000000206