syzbot


INFO: task hung in rtnetlink_rcv_msg
Status: upstream: reported C repro on 2019/02/22 17:00
Reported-by: syzbot+8218a8a0ff60c19b8eae@syzkaller.appspotmail.com
First crash: 894d, last: 10d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: task hung in addrconf_dad_work (log)
Repro: C syz .config

Fix bisection: the fix commit could be any of (bisect log):
  2618500dd370 arm: dts: mediatek: Update mt7629 dts to reflect the latest dt-binding
  c9b96eb6da2a Merge branch 'Update-MT7629-to-support-PHYLINK-API'
  4e3eff5beafa net: ethernet: mediatek: Fix MT7629 missing GMII mode support
  cab209e571a9 tcp: fix a possible lockdep splat in tcp_done()
  8d045995ed5b Merge branch 'mpls-push-pop-fix'
  b790b5549bdf net: dsa: sja1105: Use the correct style for SPDX License Identifier
  39f13ea2f61b net: avoid potential infinite loop in tc_ctl_action()
  fa4e0f8855fc net/sched: fix corrupted L2 header with MPLS 'push' and 'pop' actions
  28aa7c86c2b4 sched: etf: Fix ordering of packets with same txtime
  dedc5a08da07 net: avoid errors when trying to pop MLPS header on non-MPLS packets
  63dfb7938b13 sctp: change sctp_prot .no_autobind with true
  a03681dd5d1b net: cavium: Use the correct style for SPDX License Identifier
  61c1d33daf7b net: i82596: fix dma_alloc_attr for sni_82596
  b31141d390f1 net: dsa: microchip: Use the correct style for SPDX License Identifier
  539825a53604 davinci_cpdma: make cpdma_chan_split_pool static
  ddc790e92b3a net: ethernet: broadcom: have drivers select DIMLIB as needed
  bad28d889cae net: stmmac: make tc_flow_parsers static
  f913eac8e555 net: Update address for vrf and l3mdev in MAINTAINERS
  92696286f3bb net: bcmgenet: Set phydev->dev_flags only for internal PHYs
  efb86fede98c net: bcmgenet: Fix RGMII_MODE_EN value for GENET v1/2/3
  77b6d09f4ae6 net: usb: sr9800: fix uninitialized local variable
  b0818f80c8c1 blackhole_netdev: fix syzkaller reported issue
  bd74708cd979 Revert "blackhole_netdev: fix syzkaller reported issue"
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in rtnetlink_rcv_msg (2) 1 6d07h 6d07h 0/1 upstream: reported on 2021/07/23 04:37
linux-4.19 INFO: task hung in rtnetlink_rcv_msg 11 258d 580d 0/1 auto-closed as invalid on 2021/03/12 19:03

Sample crash report:

Crashes (98):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2019/02/17 08:10 upstream 64c0133eb88a f42dee6d .config log report syz C
ci-upstream-kasan-gce-smack-root 2019/02/17 07:52 upstream 64c0133eb88a f42dee6d .config log report syz C
ci-upstream-net-this-kasan-gce 2019/02/16 09:43 net 24f0a48743a2 f42dee6d .config log report syz C
ci-upstream-net-kasan-gce 2020/10/06 07:58 net-next c2568c8c9e63 1880b4a9 .config log report syz C
ci-upstream-net-kasan-gce 2019/02/16 15:27 net-next bb015f2216fe f42dee6d .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2021/01/06 23:52 linux-next 7e4525a4232f c104d4a3 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2019/02/16 09:44 linux-next 7a92eb7cc1dc f42dee6d .config log report syz C
ci-upstream-kasan-gce-root 2021/07/19 02:03 upstream 1d67c8d993ba f115ae98 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-kasan-gce-root 2021/04/23 16:47 upstream 18a3c5f7abfd 17f0b706 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-kasan-gce-smack-root 2021/02/12 14:52 upstream dcc0b49040c7 a5f86b15 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-kasan-gce-root 2021/01/31 00:00 upstream 8c947645151c fc9fd31e .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-kasan-gce 2021/01/26 07:28 upstream f8ad8187c3b5 52e37319 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/07/18 01:08 net 5b69874f74cc f115ae98 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-bpf-kasan-gce 2021/06/28 22:55 bpf d6765985a42a 9d2ab5df .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/04/13 14:08 net ccb39c628558 bfeda1b1 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/02/12 10:34 net 308daa19e2d0 a5f86b15 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/02/09 23:27 net 6bbc088d6ebf 2bd9619f .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/02/09 08:44 net af8085f3a471 2bd9619f .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/02/08 00:03 net 225353c070fd 2ce644fc .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/02/07 14:26 net 225353c070fd 2ce644fc .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-this-kasan-gce 2021/01/29 07:29 net 909b447dcc45 7df34f59 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-kasan-gce 2021/07/06 09:07 net-next 5e437416ff66 6c4484eb .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-kasan-gce 2021/06/13 20:49 net-next ffbbc5e5c717 1ba81399 .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-net-kasan-gce 2021/04/14 18:02 net-next 5871d0c6b8ea 3134b37f .config log report info INFO: task hung in rtnetlink_rcv_msg
ci-upstream-kasan-gce 2021/01/07 16:12 upstream 71c061d24438 c104d4a3 .config log report info
ci-upstream-kasan-gce 2020/12/27 11:34 upstream f838f8d2b694 821e0b09 .config log report info
ci-upstream-kasan-gce 2020/11/27 23:21 upstream 99c710c46dfc 486f93ef .config log report info
ci-upstream-kasan-gce-smack-root 2020/11/19 07:48 upstream c2e7554e1b85 0767f13f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/10/07 20:47 upstream c85fb28b6f99 1880b4a9 .config log report info
ci-upstream-kasan-gce-root 2020/10/07 12:47 upstream c85fb28b6f99 1880b4a9 .config log report info
ci-upstream-kasan-gce-selinux-root 2020/10/07 05:14 upstream c85fb28b6f99 1880b4a9 .config log report info
ci-upstream-kasan-gce-root 2020/10/07 01:14 upstream c85fb28b6f99 1880b4a9 .config log report info
ci-upstream-kasan-gce 2020/10/06 10:12 upstream 7575fdda569b 1880b4a9 .config log report info
ci-upstream-kasan-gce-root 2020/10/06 01:37 upstream 7575fdda569b 1880b4a9 .config log report info
ci-upstream-kasan-gce 2020/10/01 12:13 upstream 60e720931556 a9767fb2 .config log report info
ci-qemu-upstream 2019/11/30 13:21 upstream 81b6b96475ac 3a75be00 .config log report
ci-upstream-kasan-gce-386 2020/10/06 21:43 upstream 7575fdda569b 1880b4a9 .config log report info
ci-upstream-net-this-kasan-gce 2021/01/01 21:12 net 4bfc4714849d 79264ae3 .config log report info
ci-upstream-net-this-kasan-gce 2020/12/17 22:38 net 3ae32c07815a 04201c06 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/15 23:33 net 2ecbc1f68448 6e262c73 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/05 18:20 net 4296adc3e32f 1880b4a9 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/03 11:59 net ab0faf5f04e8 2653fa43 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/03 09:12 net ab0faf5f04e8 2653fa43 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/02 23:00 net ef9da46ddef0 4969d6ca .config log report info
ci-upstream-net-this-kasan-gce 2020/10/02 20:21 net ef9da46ddef0 4969d6ca .config log report info
ci-upstream-net-this-kasan-gce 2020/10/02 18:23 net ef9da46ddef0 4969d6ca .config log report info
ci-upstream-net-this-kasan-gce 2020/10/02 17:23 net ef9da46ddef0 4969d6ca .config log report info
ci-upstream-net-this-kasan-gce 2020/10/02 01:23 net bb13a800620c 9602ddf4 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/01 16:48 net a59cf619787e a9767fb2 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/01 08:29 net a59cf619787e a9767fb2 .config log report info
ci-upstream-net-this-kasan-gce 2020/10/01 02:13 net 2b3e981a94d8 8516f6d3 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/30 15:33 net 2b3e981a94d8 8516f6d3 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/30 10:44 net c92a79829c7c 5abc3f1a .config log report info
ci-upstream-net-this-kasan-gce 2020/09/30 10:42 net c92a79829c7c 5abc3f1a .config log report info
ci-upstream-net-this-kasan-gce 2020/09/29 18:27 net 1aad8049909a 1b88c6d5 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/29 15:50 net 1aad8049909a 1b88c6d5 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/29 15:10 net 1aad8049909a 1b88c6d5 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/29 08:33 net 1aad8049909a 1b88c6d5 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/28 12:13 net 709a16be0593 6bfdbe89 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/28 03:54 net 307eea32b202 5dd8aee8 .config log report info
ci-upstream-net-this-kasan-gce 2020/09/27 03:39 net 059432495e20 2d5ea0cb .config log report info
ci-upstream-net-kasan-gce 2020/12/30 17:05 net-next 3db1a3fa9880 ecb8c012 .config log report info
ci-upstream-net-kasan-gce 2020/10/16 04:02 net-next 346e320cb210 6e262c73 .config log report info
ci-upstream-net-kasan-gce 2020/10/09 07:23 net-next 9d49aea13f1e 92390980 .config log report info