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KASAN: vmalloc-out-of-bounds Read in netdev_name_node_lookup_rcu | 1 (2) | 2020/06/30 03:56 |
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KASAN: vmalloc-out-of-bounds Read in netdev_name_node_lookup_rcu | 1 (2) | 2020/06/30 03:56 |
================================================================== BUG: KASAN: vmalloc-out-of-bounds in strnlen+0x64/0x70 lib/string.c:561 Read of size 1 at addr ffffc90016f09018 by task syz-executor.0/25244 CPU: 0 PID: 25244 Comm: syz-executor.0 Not tainted 5.8.0-rc2-syzkaller #0 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+0x18f/0x20d lib/dump_stack.c:118 print_address_description.constprop.0.cold+0x5/0x436 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530 strnlen+0x64/0x70 lib/string.c:561 strnlen include/linux/string.h:339 [inline] dev_name_hash net/core/dev.c:208 [inline] netdev_name_node_lookup_rcu+0x22/0x150 net/core/dev.c:290 dev_get_by_name_rcu net/core/dev.c:883 [inline] dev_get_by_name+0x7b/0x1e0 net/core/dev.c:905 lookup_interface drivers/net/wireguard/netlink.c:63 [inline] wg_get_device_start+0x2e4/0x3f0 drivers/net/wireguard/netlink.c:203 genl_start+0x342/0x6e0 net/netlink/genetlink.c:556 __netlink_dump_start+0x585/0x900 net/netlink/af_netlink.c:2343 genl_family_rcv_msg_dumpit+0x2ac/0x310 net/netlink/genetlink.c:638 genl_family_rcv_msg net/netlink/genetlink.c:733 [inline] genl_rcv_msg+0x797/0x9e0 net/netlink/genetlink.c:753 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469 genl_rcv+0x24/0x40 net/netlink/genetlink.c:764 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 sock_no_sendpage+0xee/0x130 net/core/sock.c:2853 kernel_sendpage net/socket.c:3642 [inline] sock_sendpage+0xe5/0x140 net/socket.c:945 pipe_to_sendpage+0x2ad/0x380 fs/splice.c:448 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x3dc/0x830 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0xd4/0x140 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x171/0x2f0 fs/splice.c:1016 splice_direct_to_actor+0x38c/0x980 fs/splice.c:971 do_splice_direct+0x1b3/0x280 fs/splice.c:1059 do_sendfile+0x559/0xc30 fs/read_write.c:1521 __do_sys_sendfile64 fs/read_write.c:1582 [inline] __se_sys_sendfile64 fs/read_write.c:1568 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1568 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb19 Code: Bad RIP value. RSP: 002b:00007f4e16337c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00000000004fd640 RCX: 000000000045cb19 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 000000010000680d R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000901 R14: 00000000004cbddf R15: 00007f4e163386d4 Memory state around the buggy address: ffffc90016f08f00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 ffffc90016f08f80: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 >ffffc90016f09000: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 ^ ffffc90016f09080: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 ffffc90016f09100: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
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2020/06/29 08:54 | net-old | 0574e2000fc3 | a2cdad9d | .config | console log | report | ci-upstream-net-this-kasan-gce |