syzbot


INFO: task hung in addrconf_dad_work
Status: upstream: reported C repro on 2019/02/16 10:20
Reported-by: syzbot+f4290c15a8ab6dee87c9@syzkaller.appspotmail.com
First crash: 1269d, last: 1h59m

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: task hung in rtnl_lock (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 (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 INFO: task hung in addrconf_dad_work 1 833d 833d 0/1 auto-closed as invalid on 2019/10/25 08:37
android-49 INFO: task hung in addrconf_dad_work 1 1120d 1120d 0/3 auto-closed as invalid on 2019/02/22 20:09
linux-4.19 INFO: task hung in addrconf_dad_work 1 755d 755d 0/1 auto-closed as invalid on 2019/12/24 18:36
linux-4.19 INFO: task hung in addrconf_dad_work (2) C error 16 14h30m 546d 0/1 upstream: reported C repro on 2020/03/22 17:39
linux-4.14 INFO: task hung in addrconf_dad_work C 1 27d 327d 0/1 upstream: reported C repro on 2020/10/27 17:48

Sample crash report:

Crashes (296):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/09/18 02:45 upstream ddf21bd8ab98 70b76c1d .config log report syz C INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-selinux-root 2021/04/17 19:07 upstream 9cdbf6467424 7e2b734b .config log report syz C INFO: task hung in addrconf_dad_work
ci-upstream-linux-next-kasan-gce-root 2021/04/01 05:45 linux-next 931294922e65 6a81331a .config log report syz C INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce 2021/01/14 14:13 upstream 65f0d2414b70 269d24e8 .config log report syz C
ci-upstream-kasan-gce 2020/11/21 23:58 upstream 27bba9c532a8 68068804 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2019/02/16 10:13 upstream 5ded5871030e f42dee6d .config log report syz C
ci-upstream-kasan-gce-386 2020/11/22 12:27 upstream a349e4c65960 0d27f508 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/12/15 12:14 net 7f376f1917d7 97183ed7 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/10/02 14:04 net bb13a800620c 9602ddf4 .config log report syz C
ci-upstream-net-kasan-gce 2020/12/15 17:54 net-next 7bca5021a4e6 97183ed7 .config log report syz C
ci-upstream-net-kasan-gce 2020/12/06 02:37 net-next bcd684aace34 50503117 .config log report syz C
ci-upstream-net-kasan-gce 2020/10/07 14:45 net-next 9faebeb2d800 1880b4a9 .config log report syz C
ci-upstream-net-kasan-gce 2020/10/07 00:44 net-next 8b0308fe319b 1880b4a9 .config log report syz C
ci-upstream-net-this-kasan-gce 2020/10/11 07:18 net 7b50ee3dad25 4a77ae0b .config log report syz
ci-upstream-kasan-gce-selinux-root 2021/09/20 03:26 upstream bc1abb9e55ce 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-selinux-root 2021/09/19 20:21 upstream bc1abb9e55ce 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/19 11:36 upstream d4d016caa4b8 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-selinux-root 2021/09/19 06:47 upstream d4d016caa4b8 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/19 02:45 upstream 93ff9f13be91 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/18 23:05 upstream 93ff9f13be91 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-root 2021/09/18 22:00 upstream 93ff9f13be91 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-selinux-root 2021/09/17 18:07 upstream ddf21bd8ab98 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce 2021/09/16 19:52 upstream ff1ffd71d5f0 aae492f2 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/16 15:12 upstream ff1ffd71d5f0 aae492f2 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/16 13:58 upstream ff1ffd71d5f0 aae492f2 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-selinux-root 2021/09/16 13:01 upstream ff1ffd71d5f0 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce 2021/09/16 11:28 upstream b7213ffa0e58 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-selinux-root 2021/09/15 23:48 upstream b7213ffa0e58 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-root 2021/09/15 17:42 upstream 3ca706c189db 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/15 14:28 upstream 3ca706c189db 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/15 12:58 upstream 3ca706c189db 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/15 12:43 upstream 3ca706c189db 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/15 10:33 upstream 3ca706c189db 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/14 20:23 upstream 1619b69edce1 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/14 18:25 upstream 1619b69edce1 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/14 17:12 upstream 1619b69edce1 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-root 2021/09/14 15:11 upstream d0ee23f9d78b 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/14 09:08 upstream d0ee23f9d78b 58d09404 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/14 01:23 upstream d0ee23f9d78b 58d09404 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/13 15:33 upstream 6880fa6c5660 3ce60af8 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/13 10:22 upstream 6880fa6c5660 3ce60af8 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/13 06:36 upstream f306b90c69ce 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-root 2021/09/13 05:33 upstream f306b90c69ce 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/12 23:34 upstream f306b90c69ce 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/12 21:50 upstream f306b90c69ce 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce 2021/09/12 20:31 upstream 78e709522d2c 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-smack-root 2021/09/12 07:40 upstream 78e709522d2c 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-kasan-gce-386 2021/09/16 03:22 upstream b7213ffa0e58 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-bpf-kasan-gce 2021/09/20 06:53 bpf bc23f7244817 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-this-kasan-gce 2021/09/18 06:13 net 02319bf15acf 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-this-kasan-gce 2021/09/17 11:18 net fc0c0548c1a2 5b989942 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-this-kasan-gce 2021/09/17 07:51 net fc0c0548c1a2 5b989942 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-this-kasan-gce 2021/09/16 07:40 net a57d8c217aad 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-this-kasan-gce 2021/09/13 18:14 net f4bb62e64c88 3ce60af8 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/19 01:43 net-next 983e59a27b92 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/18 17:13 net-next 0efcc3f20145 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/18 13:23 net-next 0efcc3f20145 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/18 01:52 net-next 5ef8a0291513 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/18 00:38 net-next 5ef8a0291513 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/17 14:39 net-next 561bed688bff 5b989942 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/16 10:13 net-next 5706383b30cf 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/16 04:29 net-next 5706383b30cf 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/16 01:02 net-next 5706383b30cf 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/14 22:55 net-next 55bd079a3cb6 07e953c1 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-net-kasan-gce 2021/09/12 05:53 net-next 626bf91a292e 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-linux-next-kasan-gce-root 2021/09/18 04:09 linux-next 9004fd387338 70b76c1d .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-linux-next-kasan-gce-root 2021/09/17 04:56 linux-next 368847b165bb 5b989942 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-linux-next-kasan-gce-root 2021/09/17 02:12 linux-next 368847b165bb 5b989942 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-linux-next-kasan-gce-root 2021/09/13 23:37 linux-next 24a36d3171e4 58d09404 .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-linux-next-kasan-gce-root 2021/09/13 03:06 linux-next 24a36d3171e4 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-linux-next-kasan-gce-root 2021/09/12 03:03 linux-next aa14a3016182 5ae8508a .config log report info INFO: task hung in addrconf_dad_work
ci-upstream-bpf-kasan-gce 2019/10/18 23:20 bpf 11875ba7f251 8c88c9c1 .config log report
ci-upstream-net-kasan-gce 2021/01/16 19:52 net-next 9ab7e76aefc9 65a7a854 .config log report info
ci-upstream-bpf-next-kasan-gce 2019/10/10 07:23 bpf-next 25bfef430e96 c4b9981b .config log report
ci-upstream-net-kasan-gce 2018/03/30 16:13 net-next 18845557fd6f d47f0ed6 .config log report