IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0xe7/0xf3 lib/list_debug.c:54 Read of size 8 at addr ffff8801d69b2ce0 by task syz-executor0/4836 CPU: 0 PID: 4836 Comm: syz-executor0 Not tainted 4.17.0-rc6+ #86 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+0x1b9/0x294 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 __list_del_entry_valid+0xe7/0xf3 lib/list_debug.c:54 __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] cma_cancel_listens drivers/infiniband/core/cma.c:1553 [inline] cma_cancel_operation+0x457/0xe90 drivers/infiniband/core/cma.c:1581 rdma_destroy_id+0xff/0xe50 drivers/infiniband/core/cma.c:1645 ucma_close+0x100/0x300 drivers/infiniband/core/ucma.c:1755 __fput+0x34d/0x890 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1e4/0x290 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1aee/0x2730 kernel/exit.c:865 do_group_exit+0x16f/0x430 kernel/exit.c:968 get_signal+0x886/0x1960 kernel/signal.c:2482 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:265 [inline] do_syscall_32_irqs_on arch/x86/entry/common.c:338 [inline] do_fast_syscall_32+0xcc3/0xf9b arch/x86/entry/common.c:394 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f26cb9 RSP: 002b:00000000f7f0110c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0 RAX: fffffffffffffe00 RBX: 000000000814af94 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 4833: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 kmem_cache_alloc_trace+0x152/0x780 mm/slab.c:3620 kmalloc include/linux/slab.h:512 [inline] kzalloc include/linux/slab.h:701 [inline] __rdma_create_id+0xd7/0x710 drivers/infiniband/core/cma.c:753 ucma_create_id+0x385/0x9b0 drivers/infiniband/core/ucma.c:502 ucma_write+0x328/0x410 drivers/infiniband/core/ucma.c:1676 __vfs_write+0x10b/0x960 fs/read_write.c:485 vfs_write+0x1f8/0x560 fs/read_write.c:549 ksys_write+0xf9/0x250 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __ia32_sys_write+0x71/0xb0 fs/read_write.c:607 do_syscall_32_irqs_on arch/x86/entry/common.c:323 [inline] do_fast_syscall_32+0x345/0xf9b arch/x86/entry/common.c:394 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Freed by task 4836: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x260 mm/slab.c:3813 rdma_destroy_id+0x8c5/0xe50 drivers/infiniband/core/cma.c:1676 ucma_close+0x100/0x300 drivers/infiniband/core/ucma.c:1755 __fput+0x34d/0x890 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1e4/0x290 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1aee/0x2730 kernel/exit.c:865 do_group_exit+0x16f/0x430 kernel/exit.c:968 get_signal+0x886/0x1960 kernel/signal.c:2482 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:265 [inline] do_syscall_32_irqs_on arch/x86/entry/common.c:338 [inline] do_fast_syscall_32+0xcc3/0xf9b arch/x86/entry/common.c:394 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 The buggy address belongs to the object at ffff8801d69b2b00 which belongs to the cache kmalloc-2048 of size 2048 The buggy address is located 480 bytes inside of 2048-byte region [ffff8801d69b2b00, ffff8801d69b3300) The buggy address belongs to the page: page:ffffea00075a6c80 count:1 mapcount:0 mapping:ffff8801d69b2280 index:0x0 compound_mapcount: 0 flags: 0x2fffc0000008100(slab|head) raw: 02fffc0000008100 ffff8801d69b2280 0000000000000000 0000000100000003 raw: ffffea0006abd220 ffffea000765e7a0 ffff8801da800c40 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d69b2b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d69b2c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8801d69b2c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801d69b2d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d69b2d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================