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503930f8e1
rtnl_offload_xstats_get_size_hw_s_info_one() conditionalizes the size-computation for IFLA_OFFLOAD_XSTATS_HW_S_INFO_USED based on whether or not the device has offload_xstats enabled. However, rtnl_offload_xstats_fill_hw_s_info_one() is adding the u8 for that field uncondtionally. syzkaller triggered a WARNING in rtnl_stats_get due to this: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 754 at net/core/rtnetlink.c:5982 rtnl_stats_get+0x2f4/0x300 Modules linked in: CPU: 0 PID: 754 Comm: syz-executor148 Not tainted 6.6.0-rc2-g331b78eb12af #45 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014 RIP: 0010:rtnl_stats_get+0x2f4/0x300 net/core/rtnetlink.c:5982 Code: ff ff 89 ee e8 7d 72 50 ff 83 fd a6 74 17 e8 33 6e 50 ff 4c 89 ef be 02 00 00 00 e8 86 00 fa ff e9 7b fe ff ff e8 1c 6e 50 ff <0f> 0b eb e5 e8 73 79 7b 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900006837c0 EFLAGS: 00010293 RAX: ffffffff81cf7f24 RBX: ffff8881015d9000 RCX: ffff888101815a00 RDX: 0000000000000000 RSI: 00000000ffffffa6 RDI: 00000000ffffffa6 RBP: 00000000ffffffa6 R08: ffffffff81cf7f03 R09: 0000000000000001 R10: ffff888101ba47b9 R11: ffff888101815a00 R12: ffff8881017dae00 R13: ffff8881017dad00 R14: ffffc90000683ab8 R15: ffffffff83c1f740 FS: 00007fbc22dbc740(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000046 CR3: 000000010264e003 CR4: 0000000000170ef0 Call Trace: <TASK> rtnetlink_rcv_msg+0x677/0x710 net/core/rtnetlink.c:6480 netlink_rcv_skb+0xea/0x1c0 net/netlink/af_netlink.c:2545 netlink_unicast+0x430/0x500 net/netlink/af_netlink.c:1342 netlink_sendmsg+0x4fc/0x620 net/netlink/af_netlink.c:1910 sock_sendmsg+0xa8/0xd0 net/socket.c:730 ____sys_sendmsg+0x22a/0x320 net/socket.c:2541 ___sys_sendmsg+0x143/0x190 net/socket.c:2595 __x64_sys_sendmsg+0xd8/0x150 net/socket.c:2624 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x47/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fbc22e8d6a9 Code: 5c c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 8b 0d 4f 37 0d 00 f7 d8 64 89 01 48 RSP: 002b:00007ffc4320e778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004007d0 RCX: 00007fbc22e8d6a9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 00000000004007d0 R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffc4320e898 R13: 00007ffc4320e8a8 R14: 00000000004004a0 R15: 00007fbc22fa5a80 </TASK> ---[ end trace 0000000000000000 ]--- Which didn't happen prior to commit |
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| .. | ||
| bpf_sk_storage.c | ||
| datagram.c | ||
| dev_addr_lists_test.c | ||
| dev_addr_lists.c | ||
| dev_ioctl.c | ||
| dev.c | ||
| dev.h | ||
| drop_monitor.c | ||
| dst_cache.c | ||
| dst.c | ||
| failover.c | ||
| fib_notifier.c | ||
| fib_rules.c | ||
| filter.c | ||
| flow_dissector.c | ||
| flow_offload.c | ||
| gen_estimator.c | ||
| gen_stats.c | ||
| gro_cells.c | ||
| gro.c | ||
| gso.c | ||
| hwbm.c | ||
| link_watch.c | ||
| lwt_bpf.c | ||
| lwtunnel.c | ||
| Makefile | ||
| neighbour.c | ||
| net_namespace.c | ||
| net-procfs.c | ||
| net-sysfs.c | ||
| net-sysfs.h | ||
| net-traces.c | ||
| netclassid_cgroup.c | ||
| netdev-genl-gen.c | ||
| netdev-genl-gen.h | ||
| netdev-genl.c | ||
| netevent.c | ||
| netpoll.c | ||
| netprio_cgroup.c | ||
| of_net.c | ||
| page_pool.c | ||
| pktgen.c | ||
| ptp_classifier.c | ||
| request_sock.c | ||
| rtnetlink.c | ||
| scm.c | ||
| secure_seq.c | ||
| selftests.c | ||
| skbuff.c | ||
| skmsg.c | ||
| sock_destructor.h | ||
| sock_diag.c | ||
| sock_map.c | ||
| sock_reuseport.c | ||
| sock.c | ||
| stream.c | ||
| sysctl_net_core.c | ||
| timestamping.c | ||
| tso.c | ||
| utils.c | ||
| xdp.c | ||