Warning: Permanently added '10.128.1.23' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 180.773835] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 180.794061] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 180.818195] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 180.837021] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 180.856366] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 180.874706] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. executing program executing program executing program executing program executing program executing program [ 180.971101] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 181.102785] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 181.206425] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 181.280912] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. 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 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 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 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 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 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 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 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 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 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 executing program [ 185.837425] nla_parse: 127 callbacks suppressed [ 185.837432] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 186.036588] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 186.110093] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 186.176910] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 186.207426] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 186.226560] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 186.292266] ================================================================== [ 186.299780] BUG: KASAN: use-after-free in rht_deferred_worker+0x1366/0x1890 [ 186.306882] Read of size 8 at addr ffff8880a9470340 by task kworker/0:0/3 [ 186.313787] [ 186.315405] CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.14.223-syzkaller #0 [ 186.322659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 186.332009] Workqueue: events rht_deferred_worker [ 186.336836] Call Trace: [ 186.339413] dump_stack+0x1b2/0x281 [ 186.343037] print_address_description.cold+0x54/0x1d3 [ 186.348302] kasan_report_error.cold+0x8a/0x191 [ 186.352958] ? rht_deferred_worker+0x1366/0x1890 [ 186.357698] __asan_report_load8_noabort+0x68/0x70 [ 186.362623] ? rht_deferred_worker+0x1366/0x1890 [ 186.367364] rht_deferred_worker+0x1366/0x1890 [ 186.371942] process_one_work+0x793/0x14a0 [ 186.376167] ? work_busy+0x320/0x320 [ 186.379863] ? worker_thread+0x158/0xff0 [ 186.383913] ? _raw_spin_unlock_irq+0x24/0x80 [ 186.388393] worker_thread+0x5cc/0xff0 [ 186.392273] ? rescuer_thread+0xc80/0xc80 [ 186.396406] kthread+0x30d/0x420 [ 186.399758] ? kthread_create_on_node+0xd0/0xd0 [ 186.404425] ret_from_fork+0x24/0x30 [ 186.408134] [ 186.409768] Allocated by task 9731: [ 186.413380] kasan_kmalloc+0xeb/0x160 [ 186.417168] kmem_cache_alloc_trace+0x131/0x3d0 [ 186.421821] fl_change+0x27e/0x4830 [ 186.425431] tc_ctl_tfilter+0xb54/0x1c10 [ 186.429475] rtnetlink_rcv_msg+0x3be/0xb10 [ 186.433698] netlink_rcv_skb+0x125/0x390 [ 186.437741] netlink_unicast+0x437/0x610 [ 186.441783] netlink_sendmsg+0x62e/0xb80 [ 186.445828] sock_sendmsg+0xb5/0x100 [ 186.449541] ___sys_sendmsg+0x326/0x800 [ 186.453502] __sys_sendmmsg+0x129/0x330 [ 186.457458] SyS_sendmmsg+0x2f/0x50 [ 186.461068] do_syscall_64+0x1d5/0x640 [ 186.464939] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 186.470107] [ 186.471719] Freed by task 22: [ 186.474808] kasan_slab_free+0xc3/0x1a0 [ 186.478766] kfree+0xc9/0x250 [ 186.481858] fl_destroy_filter_work+0x1a/0x20 [ 186.486338] process_one_work+0x793/0x14a0 [ 186.490555] worker_thread+0x5cc/0xff0 [ 186.494422] kthread+0x30d/0x420 [ 186.497777] ret_from_fork+0x24/0x30 [ 186.501467] [ 186.503077] The buggy address belongs to the object at ffff8880a9470340 [ 186.503077] which belongs to the cache kmalloc-512 of size 512 [ 186.515718] The buggy address is located 0 bytes inside of [ 186.515718] 512-byte region [ffff8880a9470340, ffff8880a9470540) [ 186.527401] The buggy address belongs to the page: [ 186.532326] page:ffffea0002a51c00 count:1 mapcount:0 mapping:ffff8880a94700c0 index:0x0 [ 186.540454] flags: 0xfff00000000100(slab) [ 186.544593] raw: 00fff00000000100 ffff8880a94700c0 0000000000000000 0000000100000006 [ 186.552463] raw: ffffea00029557a0 ffffea00028c02a0 ffff88813fe80940 0000000000000000 [ 186.560325] page dumped because: kasan: bad access detected [ 186.566024] [ 186.567630] Memory state around the buggy address: [ 186.572540] ffff8880a9470200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 186.579879] ffff8880a9470280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc executing program [ 186.587220] >ffff8880a9470300: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 186.594562] ^ [ 186.600000] ffff8880a9470380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 186.607340] ffff8880a9470400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 186.614681] ================================================================== [ 186.622019] Disabling lock debugging due to kernel taint [ 186.627506] Kernel panic - not syncing: panic_on_warn set ... [ 186.627506] [ 186.634862] CPU: 0 PID: 3 Comm: kworker/0:0 Tainted: G B 4.14.223-syzkaller #0 executing program [ 186.643343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 186.652698] Workqueue: events rht_deferred_worker [ 186.655225] netlink: 24 bytes leftover after parsing attributes in process `syz-executor432'. [ 186.657558] Call Trace: [ 186.657572] dump_stack+0x1b2/0x281 [ 186.657583] panic+0x1f9/0x42d [ 186.657592] ? add_taint.cold+0x16/0x16 [ 186.679564] kasan_end_report+0x43/0x49 [ 186.683532] kasan_report_error.cold+0xa7/0x191 [ 186.688196] ? rht_deferred_worker+0x1366/0x1890 [ 186.692948] __asan_report_load8_noabort+0x68/0x70 [ 186.697880] ? rht_deferred_worker+0x1366/0x1890 [ 186.702656] rht_deferred_worker+0x1366/0x1890 [ 186.707241] process_one_work+0x793/0x14a0 [ 186.711477] ? work_busy+0x320/0x320 [ 186.715188] ? worker_thread+0x158/0xff0 [ 186.719245] ? _raw_spin_unlock_irq+0x24/0x80 [ 186.723735] worker_thread+0x5cc/0xff0 [ 186.727650] ? rescuer_thread+0xc80/0xc80 [ 186.731792] kthread+0x30d/0x420 [ 186.735152] ? kthread_create_on_node+0xd0/0xd0 [ 186.739815] ret_from_fork+0x24/0x30 [ 186.743938] Kernel Offset: disabled [ 186.747557] Rebooting in 86400 seconds..