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8021q: adding VLAN 0 to HW filter on device team0 8021q: adding VLAN 0 to HW filter on device team0 8021q: adding VLAN 0 to HW filter on device team0 bpfilter: read fail -512 ================================================================== BUG: KASAN: use-after-free in __kernel_write+0x301/0x380 fs/read_write.c:498 Read of size 4 at addr ffff8801cda96a7c by task syz-executor4/4562 CPU: 0 PID: 4562 Comm: syz-executor4 Not tainted 4.17.0+ #89 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_load4_noabort+0x14/0x20 mm/kasan/report.c:432 __kernel_write+0x301/0x380 fs/read_write.c:498 __bpfilter_process_sockopt+0x1d8/0x35b net/bpfilter/bpfilter_kern.c:66 bpfilter_mbox_request+0x4d/0xb0 net/ipv4/bpfilter/sockopt.c:25 bpfilter_ip_get_sockopt+0x6b/0x90 net/ipv4/bpfilter/sockopt.c:42 ip_getsockopt+0x238/0x2a0 net/ipv4/ip_sockglue.c:1563 tcp_getsockopt+0x93/0xe0 net/ipv4/tcp.c:3532 sock_common_getsockopt+0x9a/0xe0 net/core/sock.c:3012 __sys_getsockopt+0x1a5/0x370 net/socket.c:1972 __do_sys_getsockopt net/socket.c:1983 [inline] __se_sys_getsockopt net/socket.c:1980 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:1980 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4584ea Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 1d 8f fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 fa 8e fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007ffc19531c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffc19531c70 RCX: 00000000004584ea RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000705f20 R08: 00007ffc19531c6c R09: 0000000000004000 R10: 00007ffc19531c70 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000704420 Allocated by task 2223: 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 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3554 kmem_cache_zalloc include/linux/slab.h:696 [inline] get_empty_filp+0x125/0x520 fs/file_table.c:122 alloc_file+0x24/0x3e0 fs/file_table.c:163 create_pipe_files+0x4db/0x940 fs/pipe.c:763 umh_pipe_setup+0xac/0x430 kernel/umh.c:431 call_usermodehelper_exec_async+0x3c0/0x9e0 kernel/umh.c:93 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Freed by task 4572: 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] kmem_cache_free+0x86/0x2d0 mm/slab.c:3756 file_free_rcu+0x6f/0x90 fs/file_table.c:49 __rcu_reclaim kernel/rcu/rcu.h:178 [inline] rcu_do_batch kernel/rcu/tree.c:2558 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2818 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2785 [inline] rcu_process_callbacks+0xe9d/0x1760 kernel/rcu/tree.c:2802 __do_softirq+0x2e0/0xaf5 kernel/softirq.c:284 The buggy address belongs to the object at ffff8801cda96a00 which belongs to the cache filp of size 456 The buggy address is located 124 bytes inside of 456-byte region [ffff8801cda96a00, ffff8801cda96bc8) The buggy address belongs to the page: page:ffffea000736a580 count:1 mapcount:0 mapping:ffff8801cda96000 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffff8801cda96000 0000000000000000 0000000100000006 raw: ffffea000738ce20 ffffea00072a20e0 ffff8801da986940 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801cda96900: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc ffff8801cda96980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8801cda96a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801cda96a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801cda96b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2018/06/08 00:27 | upstream | 1c8c5a9d38f6 | 645e75f8 | .config | console log | report | syz | ci-upstream-kasan-gce-root | ||||
2018/06/09 00:18 | upstream | 410feb75de24 | 866118af | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2018/06/07 19:31 | upstream | 1c8c5a9d38f6 | 645e75f8 | .config | console log | report | ci-upstream-kasan-gce | |||||
2018/06/09 02:37 | upstream | 410feb75de24 | 866118af | .config | console log | report | ci-upstream-kasan-gce-386 | |||||
2018/06/10 17:26 | net-next-old | 3a979e8c07e3 | 866118af | .config | console log | report | ci-upstream-net-kasan-gce | |||||
2018/06/10 12:01 | net-next-old | 3a979e8c07e3 | 866118af | .config | console log | report | ci-upstream-net-kasan-gce | |||||
2018/06/08 02:40 | net-next-old | 7170e6045a6a | 645e75f8 | .config | console log | report | ci-upstream-net-kasan-gce |