[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.57' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 47.499107] ================================================================== [ 47.506626] BUG: KASAN: slab-out-of-bounds in tls_push_record+0x10cc/0x1270 [ 47.513729] Read of size 8 at addr ffff88809793b1b8 by task syz-executor213/8029 [ 47.521252] [ 47.522880] CPU: 0 PID: 8029 Comm: syz-executor213 Not tainted 4.14.299-syzkaller #0 [ 47.530762] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 47.540120] Call Trace: [ 47.542715] dump_stack+0x1b2/0x281 [ 47.547137] print_address_description.cold+0x54/0x1d3 [ 47.552410] kasan_report_error.cold+0x8a/0x191 [ 47.557076] ? tls_push_record+0x10cc/0x1270 [ 47.561481] __asan_report_load8_noabort+0x68/0x70 [ 47.566409] ? tls_push_record+0x10cc/0x1270 [ 47.570812] tls_push_record+0x10cc/0x1270 [ 47.575088] ? mark_held_locks+0xa6/0xf0 [ 47.579140] ? __local_bh_enable_ip+0xc1/0x170 [ 47.583725] tls_sk_proto_close+0x6f0/0x8b0 [ 47.588042] ? tcp_check_oom+0x440/0x440 [ 47.592103] ? tls_write_space+0x2d0/0x2d0 [ 47.596336] ? ip_mc_drop_socket+0x16/0x220 [ 47.600666] inet_release+0xdf/0x1b0 [ 47.604382] inet6_release+0x4c/0x70 [ 47.608094] __sock_release+0xcd/0x2b0 [ 47.611982] ? __sock_release+0x2b0/0x2b0 [ 47.616125] sock_close+0x15/0x20 [ 47.619573] __fput+0x25f/0x7a0 [ 47.622853] task_work_run+0x11f/0x190 [ 47.626739] do_exit+0xa44/0x2850 [ 47.630188] ? futex_lock_pi_atomic+0x2e0/0x2e0 [ 47.634853] ? hash_futex+0x12/0x200 [ 47.638561] ? mm_update_next_owner+0x5b0/0x5b0 [ 47.643221] ? get_signal+0x323/0x1ca0 [ 47.647101] ? lock_acquire+0x170/0x3f0 [ 47.651067] ? lock_downgrade+0x740/0x740 [ 47.655211] do_group_exit+0x100/0x2e0 [ 47.659091] get_signal+0x38d/0x1ca0 [ 47.662796] ? do_futex+0x127/0x1570 [ 47.666504] ? __fget+0x237/0x3e0 [ 47.669958] do_signal+0x7c/0x1550 [ 47.673489] ? sock_sendmsg+0xc4/0x100 [ 47.677366] ? fput_many+0xe/0x140 [ 47.680897] ? SyS_sendto+0x1e7/0x2c0 [ 47.684691] ? setup_sigcontext+0x820/0x820 [ 47.689007] ? vm_mmap_pgoff+0xcb/0x1a0 [ 47.692984] ? SyS_futex+0x1da/0x290 [ 47.696696] ? SyS_futex+0x1e3/0x290 [ 47.700413] ? SyS_mmap_pgoff+0x25e/0x510 [ 47.704556] ? exit_to_usermode_loop+0x41/0x200 [ 47.709222] exit_to_usermode_loop+0x160/0x200 [ 47.713803] do_syscall_64+0x4a3/0x640 [ 47.717693] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.722884] [ 47.724503] Allocated by task 7975: [ 47.728121] kasan_kmalloc+0xeb/0x160 [ 47.731922] __kmalloc_node_track_caller+0x4c/0x70 [ 47.736849] __alloc_skb+0x96/0x510 [ 47.740473] sk_stream_alloc_skb+0xb1/0x760 [ 47.744820] tcp_sendmsg_locked+0xed8/0x2ef0 [ 47.749218] tcp_sendmsg+0x2b/0x40 [ 47.752750] inet_sendmsg+0x11a/0x4e0 [ 47.756543] sock_sendmsg+0xb5/0x100 [ 47.760246] sock_write_iter+0x22c/0x370 [ 47.764294] __vfs_write+0x44c/0x630 [ 47.767999] vfs_write+0x17f/0x4d0 [ 47.771532] SyS_write+0xf2/0x210 [ 47.774975] do_syscall_64+0x1d5/0x640 [ 47.778852] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.784029] [ 47.785654] Freed by task 7975: [ 47.788926] kasan_slab_free+0xc3/0x1a0 [ 47.792892] kfree+0xc9/0x250 [ 47.795991] skb_release_data+0x5f6/0x820 [ 47.800132] consume_skb+0xe0/0x380 [ 47.803748] __dev_kfree_skb_any+0x7a/0xa0 [ 47.807979] free_old_xmit_skbs+0x184/0x2c0 [ 47.812291] start_xmit+0x148/0x14f0 [ 47.816000] dev_hard_start_xmit+0x188/0x890 [ 47.820399] sch_direct_xmit+0x251/0x500 [ 47.824452] __dev_queue_xmit+0x1ab0/0x2480 [ 47.828760] ip_finish_output2+0x9db/0x1340 [ 47.833072] ip_finish_output+0x37c/0xc50 [ 47.837209] ip_output+0x1cd/0x510 [ 47.840740] ip_local_out+0x93/0x170 [ 47.844441] ip_queue_xmit+0x82b/0x1b40 [ 47.848403] __tcp_transmit_skb+0x17da/0x2ca0 [ 47.852887] tcp_write_xmit+0x649/0x5460 [ 47.856936] __tcp_push_pending_frames+0xa0/0x2d0 [ 47.861781] tcp_push+0x3fd/0x5f0 [ 47.865313] tcp_sendmsg_locked+0x2153/0x2ef0 [ 47.869801] tcp_sendmsg+0x2b/0x40 [ 47.873331] inet_sendmsg+0x11a/0x4e0 [ 47.877121] sock_sendmsg+0xb5/0x100 [ 47.880829] sock_write_iter+0x22c/0x370 [ 47.884884] __vfs_write+0x44c/0x630 [ 47.888588] vfs_write+0x17f/0x4d0 [ 47.892117] SyS_write+0xf2/0x210 [ 47.895562] do_syscall_64+0x1d5/0x640 executing program [ 47.899441] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 47.904619] [ 47.906235] The buggy address belongs to the object at ffff88809793a940 [ 47.906235] which belongs to the cache kmalloc-2048 of size 2048 [ 47.919058] The buggy address is located 120 bytes to the right of [ 47.919058] 2048-byte region [ffff88809793a940, ffff88809793b140) [ 47.931962] The buggy address belongs to the page: [ 47.936882] page:ffffea00025e4e80 count:1 mapcount:0 mapping:ffff88809793a0c0 index:0x0 compound_mapcount: 0 [ 47.946841] flags: 0xfff00000008100(slab|head) [ 47.951416] raw: 00fff00000008100 ffff88809793a0c0 0000000000000000 0000000100000003 [ 47.959385] raw: ffffea0002842820 ffffea0002b07920 ffff88813fe74c40 0000000000000000 [ 47.967254] page dumped because: kasan: bad access detected [ 47.972955] [ 47.974567] Memory state around the buggy address: [ 47.979487] ffff88809793b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.986837] ffff88809793b100: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 47.994189] >ffff88809793b180: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 executing program executing program executing program [ 48.001537] ^ [ 48.006724] ffff88809793b200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 48.014076] ffff88809793b280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 48.021424] ================================================================== [ 48.028773] Disabling lock debugging due to kernel taint [ 48.135934] Kernel panic - not syncing: panic_on_warn set ... [ 48.135934] [ 48.143317] CPU: 0 PID: 8029 Comm: syz-executor213 Tainted: G B 4.14.299-syzkaller #0 [ 48.152398] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 48.161745] Call Trace: [ 48.164322] dump_stack+0x1b2/0x281 [ 48.167942] panic+0x1f9/0x42d [ 48.171126] ? add_taint.cold+0x16/0x16 [ 48.175089] ? ___preempt_schedule+0x16/0x18 [ 48.179488] kasan_end_report+0x43/0x49 [ 48.183455] kasan_report_error.cold+0xa7/0x191 [ 48.188128] ? tls_push_record+0x10cc/0x1270 [ 48.192523] __asan_report_load8_noabort+0x68/0x70 [ 48.197445] ? tls_push_record+0x10cc/0x1270 [ 48.201845] tls_push_record+0x10cc/0x1270 [ 48.206072] ? mark_held_locks+0xa6/0xf0 [ 48.210120] ? __local_bh_enable_ip+0xc1/0x170 [ 48.214696] tls_sk_proto_close+0x6f0/0x8b0 [ 48.219097] ? tcp_check_oom+0x440/0x440 [ 48.223148] ? tls_write_space+0x2d0/0x2d0 [ 48.227370] ? ip_mc_drop_socket+0x16/0x220 [ 48.231683] inet_release+0xdf/0x1b0 [ 48.235386] inet6_release+0x4c/0x70 [ 48.239093] __sock_release+0xcd/0x2b0 [ 48.242976] ? __sock_release+0x2b0/0x2b0 [ 48.247135] sock_close+0x15/0x20 [ 48.250578] __fput+0x25f/0x7a0 [ 48.253847] task_work_run+0x11f/0x190 [ 48.257727] do_exit+0xa44/0x2850 [ 48.261170] ? futex_lock_pi_atomic+0x2e0/0x2e0 [ 48.265830] ? hash_futex+0x12/0x200 [ 48.269536] ? mm_update_next_owner+0x5b0/0x5b0 [ 48.274196] ? get_signal+0x323/0x1ca0 [ 48.278075] ? lock_acquire+0x170/0x3f0 [ 48.282040] ? lock_downgrade+0x740/0x740 [ 48.286200] do_group_exit+0x100/0x2e0 [ 48.290080] get_signal+0x38d/0x1ca0 [ 48.293785] ? do_futex+0x127/0x1570 [ 48.297491] ? __fget+0x237/0x3e0 [ 48.300938] do_signal+0x7c/0x1550 [ 48.304470] ? sock_sendmsg+0xc4/0x100 [ 48.308347] ? fput_many+0xe/0x140 [ 48.311884] ? SyS_sendto+0x1e7/0x2c0 [ 48.315677] ? setup_sigcontext+0x820/0x820 [ 48.320003] ? vm_mmap_pgoff+0xcb/0x1a0 [ 48.323986] ? SyS_futex+0x1da/0x290 [ 48.327690] ? SyS_futex+0x1e3/0x290 [ 48.331830] ? SyS_mmap_pgoff+0x25e/0x510 [ 48.335964] ? exit_to_usermode_loop+0x41/0x200 [ 48.340620] exit_to_usermode_loop+0x160/0x200 [ 48.345192] do_syscall_64+0x4a3/0x640 [ 48.349073] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 48.354409] Kernel Offset: disabled [ 48.358016] Rebooting in 86400 seconds..