syzbot


memory leak in arp_create

Status: closed as invalid on 2021/10/04 21:06
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 491d, last: 490d

Sample crash report:
2021/08/04 07:56:52 executed programs: 3
2021/08/04 07:56:58 executed programs: 5
2021/08/04 07:57:04 executed programs: 7
BUG: memory leak
unreferenced object 0xffff888111c3da00 (size 232):
  comm "softirq", pid 0, jiffies 4295045760 (age 21.390s)
  hex dump (first 32 bytes):
    a0 14 76 17 81 88 ff ff a0 14 76 17 81 88 ff ff  ..v.......v.....
    00 40 ef 11 81 88 ff ff 00 00 00 00 00 00 00 00  .@..............
  backtrace:
    [<ffffffff836e310f>] __alloc_skb+0x20f/0x280 net/core/skbuff.c:414
    [<ffffffff83a52aa3>] alloc_skb include/linux/skbuff.h:1112 [inline]
    [<ffffffff83a52aa3>] arp_create+0xa3/0x3c0 net/ipv4/arp.c:539
    [<ffffffff83a52fcb>] arp_send_dst net/ipv4/arp.c:313 [inline]
    [<ffffffff83a52fcb>] arp_send_dst+0x8b/0x100 net/ipv4/arp.c:300
    [<ffffffff83a54af4>] arp_process+0xef4/0xfe0 net/ipv4/arp.c:830
    [<ffffffff83a54eac>] NF_HOOK include/linux/netfilter.h:307 [inline]
    [<ffffffff83a54eac>] NF_HOOK include/linux/netfilter.h:301 [inline]
    [<ffffffff83a54eac>] arp_rcv net/ipv4/arp.c:967 [inline]
    [<ffffffff83a54eac>] arp_rcv+0x29c/0x300 net/ipv4/arp.c:942
    [<ffffffff83715199>] __netif_receive_skb_list_ptype net/core/dev.c:5546 [inline]
    [<ffffffff83715199>] __netif_receive_skb_list_ptype net/core/dev.c:5530 [inline]
    [<ffffffff83715199>] __netif_receive_skb_list_core+0x349/0x360 net/core/dev.c:5589
    [<ffffffff83715505>] __netif_receive_skb_list net/core/dev.c:5641 [inline]
    [<ffffffff83715505>] netif_receive_skb_list_internal+0x355/0x4a0 net/core/dev.c:5751
    [<ffffffff83716f52>] gro_normal_list net/core/dev.c:5905 [inline]
    [<ffffffff83716f52>] gro_normal_list net/core/dev.c:5901 [inline]
    [<ffffffff83716f52>] napi_complete_done+0xe2/0x2e0 net/core/dev.c:6627
    [<ffffffff828ec8ad>] virtqueue_napi_complete drivers/net/virtio_net.c:337 [inline]
    [<ffffffff828ec8ad>] virtnet_poll+0x52d/0x6a0 drivers/net/virtio_net.c:1546
    [<ffffffff8371718d>] __napi_poll+0x3d/0x290 net/core/dev.c:7047
    [<ffffffff8371793a>] napi_poll net/core/dev.c:7114 [inline]
    [<ffffffff8371793a>] net_rx_action+0x32a/0x410 net/core/dev.c:7201
    [<ffffffff846000bf>] __do_softirq+0xbf/0x29e kernel/softirq.c:558
    [<ffffffff8123b9be>] invoke_softirq kernel/softirq.c:432 [inline]
    [<ffffffff8123b9be>] __irq_exit_rcu kernel/softirq.c:636 [inline]
    [<ffffffff8123b9be>] irq_exit_rcu+0x9e/0xc0 kernel/softirq.c:648
    [<ffffffff843b4d13>] common_interrupt+0x83/0xa0 arch/x86/kernel/irq.c:240
    [<ffffffff84400b5e>] asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
    [<ffffffff843ca6e0>] native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
    [<ffffffff843ca6e0>] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
    [<ffffffff843ca6e0>] acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline]
    [<ffffffff843ca6e0>] acpi_idle_do_entry+0xc0/0xd0 drivers/acpi/processor_idle.c:553


Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-gce-leak 2021/08/04 08:08 upstream d5ad8ec3cfb5 6c236867 .config log report syz memory leak in arp_create
ci-upstream-gce-leak 2021/08/03 02:33 upstream c500bee1c5b2 6c236867 .config log report syz memory leak in arp_create
* Struck through repros no longer work on HEAD.