Title | Replies (including bot) | Last reply |
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KASAN: use-after-free Read in tls_push_sg | 1 (2) | 2019/08/19 22:42 |
Reminder: 17 open syzbot bugs in "net/tls" subsystem | 1 (1) | 2019/06/25 05:50 |
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Title | Replies (including bot) | Last reply |
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KASAN: use-after-free Read in tls_push_sg | 1 (2) | 2019/08/19 22:42 |
Reminder: 17 open syzbot bugs in "net/tls" subsystem | 1 (1) | 2019/06/25 05:50 |
================================================================== BUG: KASAN: use-after-free in tls_push_sg+0x5e2/0x680 net/tls/tls_main.c:139 Read of size 4 at addr ffff888066f4d584 by task syz-executor.1/28368 CPU: 0 PID: 28368 Comm: syz-executor.1 Not tainted 5.1.0+ #9 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:188 __kasan_report.cold+0x1b/0x40 mm/kasan/report.c:317 kasan_report+0x12/0x20 mm/kasan/common.c:614 __asan_report_load4_noabort+0x14/0x20 mm/kasan/generic_report.c:131 tls_push_sg+0x5e2/0x680 net/tls/tls_main.c:139 tls_push_partial_record net/tls/tls_main.c:208 [inline] tls_complete_pending_work include/net/tls.h:382 [inline] tls_sk_proto_close+0x4a8/0x780 net/tls/tls_main.c:282 inet_release+0x105/0x1f0 net/ipv4/af_inet.c:432 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:474 __sock_release+0xd3/0x2b0 net/socket.c:607 sock_close+0x1b/0x30 net/socket.c:1279 __fput+0x302/0x890 fs/file_table.c:279 ____fput+0x16/0x20 fs/file_table.c:312 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:168 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x594/0x680 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x412b61 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 1a 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fff8622b0f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000412b61 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000001 R08: 00000000bb5eab81 R09: 00000000bb5eab85 R10: 00007fff8622b1d0 R11: 0000000000000293 R12: 000000000073c900 R13: 000000000073c900 R14: 00000000002190c3 R15: 000000000073bfac Allocated by task 28369: save_stack+0x23/0x90 mm/kasan/common.c:71 set_track mm/kasan/common.c:79 [inline] __kasan_kmalloc mm/kasan/common.c:489 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:462 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:503 __do_kmalloc mm/slab.c:3690 [inline] __kmalloc+0x15c/0x740 mm/slab.c:3699 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:742 [inline] tls_get_rec+0x104/0x590 net/tls/tls_sw.c:322 tls_sw_sendmsg+0xda5/0x17b0 net/tls/tls_sw.c:928 inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802 sock_sendmsg_nosec net/socket.c:660 [inline] sock_sendmsg+0xf2/0x170 net/socket.c:671 __sys_sendto+0x262/0x380 net/socket.c:1964 __do_sys_sendto net/socket.c:1976 [inline] __se_sys_sendto net/socket.c:1972 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1972 do_syscall_64+0x103/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 4964: save_stack+0x23/0x90 mm/kasan/common.c:71 set_track mm/kasan/common.c:79 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:451 kasan_slab_free+0xe/0x10 mm/kasan/common.c:459 __cache_free mm/slab.c:3462 [inline] kfree+0xcf/0x230 mm/slab.c:3785 tls_tx_records+0x4c6/0x760 net/tls/tls_sw.c:408 tx_work_handler+0xba/0xf0 net/tls/tls_sw.c:2150 process_one_work+0x98e/0x1790 kernel/workqueue.c:2268 worker_thread+0x98/0xe40 kernel/workqueue.c:2414 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 ffff888066f4d280 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 772 bytes inside of 2048-byte region [ffff888066f4d280, ffff888066f4da80) The buggy address belongs to the page: page:ffffea00019bd300 count:1 mapcount:0 mapping:ffff8880aa400c40 index:0x0 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea0002413588 ffffea0001aa2a08 ffff8880aa400c40 raw: 0000000000000000 ffff888066f4c180 0000000100000003 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888066f4d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888066f4d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888066f4d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888066f4d600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888066f4d680: 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/05/17 17:20 | net-next-old | 35c99ffa20ed | 95dfd515 | .config | console log | report | ci-upstream-net-kasan-gce | |||||
2019/07/30 03:57 | linux-next | 0d8b3265d9a6 | f67095ee | .config | console log | report | ci-upstream-linux-next-kasan-gce-root |