bisecting fixing commit since 7b6ae471e5415bc2bf4384a83ccb4c21de7824c0
building syzkaller on 29c3f20f99b6befe0395fe8e474b1e24240cac95
testing commit 7b6ae471e5415bc2bf4384a83ccb4c21de7824c0
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 22a660502e91116f4d373e78b7415d90d28cf7a97baefaec5f05e3bec3b6acc4
run #0: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #1: crashed: INFO: rcu detected stall in smp_call_function
run #2: crashed: INFO: rcu detected stall in neigh_periodic_work
run #3: crashed: INFO: rcu detected stall in ieee80211_iface_work
run #4: crashed: INFO: rcu detected stall in smp_call_function
run #5: crashed: INFO: rcu detected stall in newfstatat
run #6: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #7: crashed: INFO: rcu detected stall in smp_call_function
run #8: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #9: crashed: INFO: rcu detected stall in addrconf_rs_timer
run #10: crashed: INFO: rcu detected stall in smp_call_function
run #11: crashed: INFO: rcu detected stall in smp_call_function
run #12: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #13: crashed: INFO: rcu detected stall in corrupted
run #14: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #15: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #16: crashed: INFO: rcu detected stall in smp_call_function
run #17: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #18: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #19: crashed: INFO: rcu detected stall in addrconf_rs_timer
testing current HEAD 0840a7914caa14315a3191178a9f72c742477860
testing commit 0840a7914caa14315a3191178a9f72c742477860
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7e113bfde95b06bf7892262bd66b3b9c9d4b15fa56b6b1ec56449c1b0f8681b4
all runs: crashed: INFO: rcu detected stall in corrupted
revisions tested: 2, total time: 24m25.843169835s (build: 13m25.53263836s, test: 10m8.506415869s)
the crash still happens on HEAD
commit msg: Merge tag 'char-misc-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
crash: INFO: rcu detected stall in corrupted
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P4049 } 4 jiffies s: 2893 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-... } 7 jiffies s: 2977 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Task dump for CPU 1:
task:udevd           state:R  running task     stack:27304 pid: 3009 ppid:     1 flags:0x00000008
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5146 [inline]
 __schedule+0x916/0x2700 kernel/sched/core.c:6458
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6623
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35
 </TASK>
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready