bond0 (unregistering): Released all slaves F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop0): invalid crc value ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0xe0/0xf0 lib/list_debug.c:51 Read of size 8 at addr ffff88809ef3fd18 by task kworker/u4:4/2851 CPU: 1 PID: 2851 Comm: kworker/u4:4 Not tainted 4.14.229-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430 __list_del_entry_valid+0xe0/0xf0 lib/list_debug.c:51 __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] rds_tcp_conn_free+0x84/0x1c0 net/rds/tcp.c:310 rds_conn_path_destroy net/rds/connection.c:408 [inline] rds_conn_destroy+0x4b3/0x730 net/rds/connection.c:439 rds_tcp_kill_sock net/rds/tcp.c:545 [inline] rds_tcp_dev_event+0x79a/0xa30 net/rds/tcp.c:573 notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93 call_netdevice_notifiers_info net/core/dev.c:1667 [inline] call_netdevice_notifiers net/core/dev.c:1683 [inline] netdev_run_todo+0x242/0xad0 net/core/dev.c:7927 default_device_exit_batch+0x2e2/0x380 net/core/dev.c:8747 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:145 cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Allocated by task 5: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552 rds_tcp_conn_alloc+0x4d/0x290 net/rds/tcp.c:279 __rds_conn_create+0xc92/0x16f0 net/rds/connection.c:223 rds_tcp_accept_one+0x2d9/0x8b0 net/rds/tcp_listen.c:171 rds_tcp_accept_worker+0x4d/0x70 net/rds/tcp.c:407 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Freed by task 2851: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758 rds_conn_path_destroy net/rds/connection.c:408 [inline] rds_conn_destroy+0x4b3/0x730 net/rds/connection.c:439 rds_tcp_kill_sock net/rds/tcp.c:545 [inline] rds_tcp_dev_event+0x79a/0xa30 net/rds/tcp.c:573 notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93 call_netdevice_notifiers_info net/core/dev.c:1667 [inline] call_netdevice_notifiers net/core/dev.c:1683 [inline] netdev_run_todo+0x242/0xad0 net/core/dev.c:7927 default_device_exit_batch+0x2e2/0x380 net/core/dev.c:8747 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:145 cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 The buggy address belongs to the object at ffff88809ef3fd18 which belongs to the cache rds_tcp_connection of size 504 The buggy address is located 0 bytes inside of 504-byte region [ffff88809ef3fd18, ffff88809ef3ff10) The buggy address belongs to the page: page:ffffea00027bcfc0 count:1 mapcount:0 mapping:ffff88809ef3f0c0 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffff88809ef3f0c0 0000000000000000 0000000100000006 raw: ffffea000287a720 ffff8880a48f8748 ffff8882357270c0 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809ef3fc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88809ef3fc80: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88809ef3fd00: fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88809ef3fd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88809ef3fe00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================