================================================================== BUG: KASAN: slab-out-of-bounds in atomic_read include/asm-generic/atomic-instrumented.h:26 [inline] BUG: KASAN: slab-out-of-bounds in refcount_read include/linux/refcount.h:43 [inline] BUG: KASAN: slab-out-of-bounds in check_net include/net/net_namespace.h:254 [inline] BUG: KASAN: slab-out-of-bounds in rds_destroy_pending net/rds/rds.h:951 [inline] BUG: KASAN: slab-out-of-bounds in rds_cong_queue_updates+0x209/0x4d0 net/rds/cong.c:229 Read of size 4 at addr ffff888069d1c184 by task syz-executor.3/13086 CPU: 0 PID: 13086 Comm: syz-executor.3 Not tainted 5.0.0+ #98 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:187 kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317 check_memory_region_inline mm/kasan/generic.c:185 [inline] check_memory_region+0x123/0x190 mm/kasan/generic.c:191 kasan_check_read+0x11/0x20 mm/kasan/common.c:102 atomic_read include/asm-generic/atomic-instrumented.h:26 [inline] refcount_read include/linux/refcount.h:43 [inline] check_net include/net/net_namespace.h:254 [inline] rds_destroy_pending net/rds/rds.h:951 [inline] rds_cong_queue_updates+0x209/0x4d0 net/rds/cong.c:229 rds_recv_rcvbuf_delta.part.0+0x34f/0x3f0 net/rds/recv.c:118 rds_recv_rcvbuf_delta net/rds/recv.c:379 [inline] rds_recv_incoming+0x789/0x11f0 net/rds/recv.c:379 rds_loop_xmit+0xf3/0x2a0 net/rds/loop.c:96 rds_send_xmit+0x1113/0x2560 net/rds/send.c:355 rds_sendmsg+0x3017/0x3550 net/rds/send.c:1369 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 __sys_sendto+0x262/0x380 net/socket.c:1809 __do_sys_sendto net/socket.c:1821 [inline] __se_sys_sendto net/socket.c:1817 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1817 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458079 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2ca6c22c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000458079 RDX: 0000000000000481 RSI: 0000000020000a00 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2ca6c236d4 R13: 00000000004c56f1 R14: 00000000004d9628 R15: 00000000ffffffff Allocated by task 32080: save_stack+0x45/0xd0 mm/kasan/common.c:75 set_track mm/kasan/common.c:87 [inline] __kasan_kmalloc mm/kasan/common.c:497 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:470 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:511 __do_kmalloc_node mm/slab.c:3686 [inline] __kmalloc_node+0x4e/0x70 mm/slab.c:3693 kmalloc_node include/linux/slab.h:588 [inline] kvmalloc_node+0xbd/0x100 mm/util.c:430 kvmalloc include/linux/mm.h:605 [inline] kvmalloc_array include/linux/mm.h:623 [inline] __ptr_ring_init_queue_alloc include/linux/ptr_ring.h:474 [inline] ptr_ring_init include/linux/ptr_ring.h:492 [inline] skb_array_init include/linux/skb_array.h:186 [inline] pfifo_fast_init+0x10a/0x390 net/sched/sch_generic.c:748 qdisc_create_dflt+0x10d/0x1e0 net/sched/sch_generic.c:912 attach_one_default_qdisc net/sched/sch_generic.c:1052 [inline] netdev_for_each_tx_queue include/linux/netdevice.h:2135 [inline] attach_default_qdiscs net/sched/sch_generic.c:1071 [inline] dev_activate+0x717/0xb30 net/sched/sch_generic.c:1114 __dev_open+0x292/0x3d0 net/core/dev.c:1404 dev_open net/core/dev.c:1431 [inline] dev_open+0xfc/0x160 net/core/dev.c:1424 bond_enslave+0x95d/0x4bb0 drivers/net/bonding/bond_main.c:1548 bond_do_ioctl+0x7d8/0x870 drivers/net/bonding/bond_main.c:3549 dev_ifsioc+0x257/0x990 net/core/dev_ioctl.c:322 dev_ioctl+0x286/0xc90 net/core/dev_ioctl.c:513 sock_ioctl+0x48b/0x610 net/socket.c:1030 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 21: save_stack+0x45/0xd0 mm/kasan/common.c:75 set_track mm/kasan/common.c:87 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:459 kasan_slab_free+0xe/0x10 mm/kasan/common.c:467 __cache_free mm/slab.c:3498 [inline] kfree+0xcf/0x230 mm/slab.c:3821 ops_free net/core/net_namespace.c:143 [inline] ops_free_list.part.0+0x268/0x3c0 net/core/net_namespace.c:165 ops_free_list net/core/net_namespace.c:163 [inline] cleanup_net+0x4a1/0x960 net/core/net_namespace.c:555 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff888069d1d840 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 5820 bytes to the left of 8192-byte region [ffff888069d1d840, ffff888069d1f840) The buggy address belongs to the page: page:ffffea0001a74700 count:1 mapcount:0 mapping:ffff88812c3f2080 index:0x0 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea0001658d08 ffffea00023e9d08 ffff88812c3f2080 raw: 0000000000000000 ffff888069d1d840 0000000100000001 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888069d1c080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888069d1c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888069d1c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888069d1c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888069d1c280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================