bisecting cause commit starting from e1ae4b0be15891faf46d390e9f3dc9bd71a8cae1
building syzkaller on 52e3731913ab2677be27c29ed8142b04e8f28521
testing commit e1ae4b0be15891faf46d390e9f3dc9bd71a8cae1 with gcc (GCC) 8.1.0
kernel signature: c057d04df8c221829819cc1c5dded1a70da86e7bc1d236794b6564df8637968a
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #9: crashed: INFO: task hung in addrconf_dad_work
testing release v5.10
testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 8.1.0
kernel signature: e508189465d39ffd8a9dcf9ccae50cef7d9bf7cb4686aa21cb801f2c95ce4704
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: INFO: task hung in addrconf_dad_work
run #9: crashed: INFO: task hung in linkwatch_event
testing release v5.9
testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 8.1.0
kernel signature: b0669908e972d5961842171da3a8b0dc1740fd1cd57a3632345365e6d92d2536
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: INFO: task hung in linkwatch_event
run #8: crashed: INFO: task hung in cfg80211_event_work
run #9: crashed: INFO: task hung in linkwatch_event
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0
kernel signature: ce3310a5b3e1c3295d73e0faafb06452de190f31f47c7d2c554179e95531b680
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: INFO: task hung in linkwatch_event
run #9: crashed: INFO: task hung in cfg80211_dfs_channels_update_work
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0
kernel signature: 7cd99adf0fef5b2dcb30a48a4dca138dc666a4d8d6b386418460f81c452b4dbc
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #9: crashed: INFO: task hung in addrconf_dad_work
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0
kernel signature: 2bb930b6a15dd564e179a871ba4f87042325a222665a423159f4869f66dfc247
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: INFO: task hung in cfg80211_dfs_channels_update_work
run #9: crashed: INFO: task hung in addrconf_dad_work
testing release v5.5
testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0
kernel signature: feb8ac96d194eaf27977921b16703b1e9f94d516f821077d74d97ec7de18ffd2
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #9: crashed: INFO: task hung in cfg80211_event_work
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0
kernel signature: 1a755598e3356b5829349eb9e2273b28187c03794ec34d1877e657344a6ce3d3
all runs: OK
# git bisect start d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 219d54332a09e8d8741c1e1982f5eae56099de85
Bisecting: 8639 revisions left to test after this (roughly 13 steps)
[8c39f71ee2019e77ee14f88b1321b2348db51820] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

testing commit 8c39f71ee2019e77ee14f88b1321b2348db51820 with gcc (GCC) 8.1.0
kernel signature: a89f1a1bb1fe0dcad8365f999b9560b59b8a695f4ab81bc63926cb76f3ec12cc
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: INFO: task hung in addrconf_dad_work
run #9: crashed: INFO: task hung in linkwatch_event
# git bisect bad 8c39f71ee2019e77ee14f88b1321b2348db51820
Bisecting: 3435 revisions left to test after this (roughly 12 steps)
[3b397c7ccafe0624018cb09fc96729f8f6165573] Merge tag 'regmap-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

testing commit 3b397c7ccafe0624018cb09fc96729f8f6165573 with gcc (GCC) 8.1.0
kernel signature: c17ab2e3275a136fda52ad15a1793496e876d10dae6f48c2768baa404b7d6047
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: INFO: task hung in addrconf_dad_work
run #8: crashed: INFO: task hung in reg_check_chans_work
run #9: crashed: INFO: task hung in linkwatch_event
# git bisect bad 3b397c7ccafe0624018cb09fc96729f8f6165573
Bisecting: 1709 revisions left to test after this (roughly 11 steps)
[924ea58dadea23cc28b60d02b9c0896b7b168a6f] Merge tag 'mt76-for-kvalo-2019-11-20' of https://github.com/nbd168/wireless

testing commit 924ea58dadea23cc28b60d02b9c0896b7b168a6f with gcc (GCC) 8.1.0
kernel signature: d35b5858d00992f3c4e62ab4e2c579ce9652fd6c2fdcb1309e4169fb7ce62811
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: INFO: task hung in rtnl_lock
run #8: crashed: INFO: task hung in rtnl_lock
run #9: crashed: INFO: task hung in rtnl_lock
# git bisect bad 924ea58dadea23cc28b60d02b9c0896b7b168a6f
Bisecting: 855 revisions left to test after this (roughly 10 steps)
[3b7ad08b5153b0eda2f4d57ac53d815c30acd172] vsock: Simplify '__vsock_release()'

testing commit 3b7ad08b5153b0eda2f4d57ac53d815c30acd172 with gcc (GCC) 8.1.0
kernel signature: ba89fdc90b5b0b73e2b59474735b3b4f004b79e230f07c71c206497dbcb77822
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #9: crashed: INFO: task hung in rtnl_lock
# git bisect bad 3b7ad08b5153b0eda2f4d57ac53d815c30acd172
Bisecting: 427 revisions left to test after this (roughly 9 steps)
[a3e09ded6a6d4b4cbdeb8c1ec4c7cf60798b3ce0] i40e: Extract detection of HW flags into a function

testing commit a3e09ded6a6d4b4cbdeb8c1ec4c7cf60798b3ce0 with gcc (GCC) 8.1.0
kernel signature: 7b2bc87d00fa0f00d0114b845c523d7185aa88e61c973dc667c445fee95d5163
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: INFO: task hung in rtnl_lock
run #9: crashed: INFO: task hung in rtnl_lock
# git bisect bad a3e09ded6a6d4b4cbdeb8c1ec4c7cf60798b3ce0
Bisecting: 218 revisions left to test after this (roughly 8 steps)
[cb0ce18aaf4c08f1c5c60d8a09fcba34f63f6f51] genetlink: do not parse attributes for families with zero maxattr

testing commit cb0ce18aaf4c08f1c5c60d8a09fcba34f63f6f51 with gcc (GCC) 8.1.0
kernel signature: 90dbda2773cc916a5f2a77cfb8c790a1ec573ce0a28f1aec4a54d5becf107970
all runs: OK
# git bisect good cb0ce18aaf4c08f1c5c60d8a09fcba34f63f6f51
Bisecting: 109 revisions left to test after this (roughly 7 steps)
[49c65e4ff19772847e030e04121bece0517eb32c] selftests: mlxsw: Generalize the parameters of mirror_gre test

testing commit 49c65e4ff19772847e030e04121bece0517eb32c with gcc (GCC) 8.1.0
kernel signature: cb1f92b56caa88d8e89d9c42837cef123e5ecaa52617eed91a6120ffdbf425fc
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: INFO: task hung in rtnl_lock
run #8: crashed: INFO: task hung in rtnl_lock
run #9: crashed: INFO: task hung in rtnl_lock
# git bisect bad 49c65e4ff19772847e030e04121bece0517eb32c
Bisecting: 54 revisions left to test after this (roughly 6 steps)
[752677e89fca11fd6e239df2fb9877b9e6b83ab2] samples/bpf: Add makefile.target for separate CC target build

testing commit 752677e89fca11fd6e239df2fb9877b9e6b83ab2 with gcc (GCC) 8.1.0
kernel signature: b06881db37ecbd9e7ad57f9a80a8e4916db565045d9997ba5b2269a93ccb5cf1
run #0: basic kernel testing failed: general protection fault in batadv_iv_ogm_queue_add
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good 752677e89fca11fd6e239df2fb9877b9e6b83ab2
Bisecting: 27 revisions left to test after this (roughly 5 steps)
[a9d6ed7a8bd0f3091b9fe6d0b9facc9392c1ec21] net: dsa: sja1105: Move PTP data to its own private structure

testing commit a9d6ed7a8bd0f3091b9fe6d0b9facc9392c1ec21 with gcc (GCC) 8.1.0
kernel signature: 026ec2c9245b63f8e068728c9ea5ee9892b263a7e81d81d1da89270a881a4525
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #8: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #9: crashed: INFO: task hung in rtnl_lock
# git bisect bad a9d6ed7a8bd0f3091b9fe6d0b9facc9392c1ec21
Bisecting: 14 revisions left to test after this (roughly 4 steps)
[b8fc345d6b5d661e1125bd6a0e30b6fabf1a076e] Merge branch 'selftests-bpf-Makefile-cleanup'

testing commit b8fc345d6b5d661e1125bd6a0e30b6fabf1a076e with gcc (GCC) 8.1.0
kernel signature: b06881db37ecbd9e7ad57f9a80a8e4916db565045d9997ba5b2269a93ccb5cf1
run #0: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #1: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #2: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #3: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good b8fc345d6b5d661e1125bd6a0e30b6fabf1a076e
Bisecting: 7 revisions left to test after this (roughly 3 steps)
[b1103d256704869f94c1399d189618c43724ded6] mac80211: minstrel_ht: replace rate stats ewma with a better moving average

testing commit b1103d256704869f94c1399d189618c43724ded6 with gcc (GCC) 8.1.0
kernel signature: d861adc1739afa66b71e3a25589dcc1d224e349956d9d8e919ac7c375fb9a16e
run #0: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #1: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #2: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #3: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #4: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request.  '(resource type:compute)'. ForceSendFields:[] NullFields:[]}.
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect good b1103d256704869f94c1399d189618c43724ded6
Bisecting: 3 revisions left to test after this (roughly 2 steps)
[7e0d15ee0d8ba28a41ed02c8d2c1c17124b13234] Merge tag 'mac80211-next-for-net-next-2019-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

testing commit 7e0d15ee0d8ba28a41ed02c8d2c1c17124b13234 with gcc (GCC) 8.1.0
kernel signature: 89a51a37ef35c78271f1ba99964261d589eaac06fa1f9867df9034ca3563c1c5
run #0: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #1: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #2: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #3: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #4: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #5: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #6: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
run #7: crashed: INFO: task hung in rtnl_lock
run #8: crashed: INFO: task hung in rtnl_lock
run #9: crashed: INFO: task hung in rtnl_lock
# git bisect bad 7e0d15ee0d8ba28a41ed02c8d2c1c17124b13234
Bisecting: 1 revision left to test after this (roughly 1 step)
[b5764696ac409523414f70421c13b7e7a9309454] mac80211_hwsim: add more 5GHz channels, 5/10 MHz support

testing commit b5764696ac409523414f70421c13b7e7a9309454 with gcc (GCC) 8.1.0
kernel signature: 8978f4a9b5feeee150056d50c3793cd0b57b0a47668cd759713848c230feb19d
all runs: OK
# git bisect good b5764696ac409523414f70421c13b7e7a9309454
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[7dfd8ac327301f302b03072066c66eb32578e940] mac80211_hwsim: add support for OCB

testing commit 7dfd8ac327301f302b03072066c66eb32578e940 with gcc (GCC) 8.1.0
kernel signature: bbb26b9cba27844c1d76056a892d3e6332a9b5fa11a4586b611a41860ef4bbbb
all runs: crashed: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
# git bisect bad 7dfd8ac327301f302b03072066c66eb32578e940
7dfd8ac327301f302b03072066c66eb32578e940 is the first bad commit
commit 7dfd8ac327301f302b03072066c66eb32578e940
Author: Ramon Fontes <ramonreisfontes@gmail.com>
Date:   Thu Oct 10 15:13:07 2019 -0300

    mac80211_hwsim: add support for OCB
    
    OCB (Outside the Context of a BSS) interfaces are the
    implementation of 802.11p, support that.
    
    Signed-off-by: Ramon Fontes <ramonreisfontes@gmail.com>
    Link: https://lore.kernel.org/r/20191010181307.11821-2-ramonreisfontes@gmail.com
    Signed-off-by: Johannes Berg <johannes.berg@intel.com>

 drivers/net/wireless/mac80211_hwsim.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

culprit signature: bbb26b9cba27844c1d76056a892d3e6332a9b5fa11a4586b611a41860ef4bbbb
parent  signature: 8978f4a9b5feeee150056d50c3793cd0b57b0a47668cd759713848c230feb19d
revisions tested: 22, total time: 4h35m46.09224054s (build: 2h2m42.335092668s, test: 2h30m35.576174005s)
first bad commit: 7dfd8ac327301f302b03072066c66eb32578e940 mac80211_hwsim: add support for OCB
recipients (to): ["johannes.berg@intel.com" "johannes@sipsolutions.net" "linux-wireless@vger.kernel.org" "netdev@vger.kernel.org" "ramonreisfontes@gmail.com"]
recipients (cc): ["davem@davemloft.net" "kvalo@codeaurora.org" "linux-kernel@vger.kernel.org"]
crash: WARNING: ODEBUG bug in ieee80211_ibss_setup_sdata
------------[ cut here ]------------
ODEBUG: init active (active state 0) object type: timer_list hint: 0x0
WARNING: CPU: 0 PID: 10681 at lib/debugobjects.c:484 debug_print_object+0x19f/0x2a0 lib/debugobjects.c:481
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 10681 Comm: syz-executor.5 Not tainted 5.3.0-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+0x86/0xca lib/dump_stack.c:113
 panic+0x29a/0x523 kernel/panic.c:220
 __warn.cold.10+0x25/0x25 kernel/panic.c:581
 report_bug+0x1b0/0x270 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x125/0x1d0 arch/x86/kernel/traps.c:272
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:debug_print_object+0x19f/0x2a0 lib/debugobjects.c:481
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d7 00 00 00 48 8b 14 dd 40 33 f8 8a 4c 89 f6 48 c7 c7 20 aa d6 88 e8 97 16 b7 fd <0f> 0b 83 05 6c 67 f0 08 01 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffff888089aff390 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff89f20f80 RDI: ffffffff8d54e160
RBP: ffff888089aff3d0 R08: ffffed10173c5f81 R09: ffffed10173c5f81
R10: ffffed10173c5f80 R11: ffff8880b9e2fc07 R12: 0000000000000001
R13: ffffffff8a4e5f60 R14: ffffffff88d6aee0 R15: ffffffff8159dcf0
 __debug_object_init+0x5e8/0x11d0 lib/debugobjects.c:564
 debug_object_init+0x16/0x20 lib/debugobjects.c:591
 debug_timer_init kernel/time/timer.c:709 [inline]
 debug_init kernel/time/timer.c:762 [inline]
 init_timer_key+0x2e/0x2b0 kernel/time/timer.c:804
 ieee80211_ibss_setup_sdata+0x2d/0x1b0 net/mac80211/ibss.c:1726
 ieee80211_setup_sdata+0x9dc/0xf20 net/mac80211/iface.c:1450
 ieee80211_runtime_change_iftype net/mac80211/iface.c:1555 [inline]
 ieee80211_if_change_type+0x2aa/0x4c0 net/mac80211/iface.c:1574
 ieee80211_change_iface+0x29/0x1d0 net/mac80211/cfg.c:158
 rdev_change_virtual_intf net/wireless/rdev-ops.h:69 [inline]
 cfg80211_change_iface+0x226/0x1180 net/wireless/util.c:975
 nl80211_set_interface+0x475/0x8c0 net/wireless/nl80211.c:3516
 genl_family_rcv_msg+0x61d/0x12f0 net/netlink/genetlink.c:629
 genl_rcv_msg+0xb1/0x160 net/netlink/genetlink.c:654
 netlink_rcv_skb+0x13c/0x380 net/netlink/af_netlink.c:2477
 genl_rcv+0x23/0x40 net/netlink/genetlink.c:665
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x43b/0x640 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x7a0/0xc50 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:657
 __sys_sendto+0x1f2/0x2e0 net/socket.c:1952
 __do_sys_sendto net/socket.c:1964 [inline]
 __se_sys_sendto net/socket.c:1960 [inline]
 __x64_sys_sendto+0xdc/0x1a0 net/socket.c:1960
 do_syscall_64+0x93/0x4e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x417c97
Code: 2c 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 81 19 00 00 c3 48 83 ec 08 e8 e7 fa ff ff 48 89 04 24 49 89 ca b8 2c 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 2d fb ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f26ba5b4a80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f26ba5b4bd0 RCX: 0000000000417c97
RDX: 0000000000000024 RSI: 00007f26ba5b4c20 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007f26ba5b4a90 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f26ba5b4c20 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..