bisecting fixing commit since d6765985a42a660f078896d5c5b27f97c580a490
building syzkaller on 9d2ab5dfe7727dfea4b9b279f4edf731acb386ef
testing commit d6765985a42a660f078896d5c5b27f97c580a490
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 65241d6ac4131102e3bb9c9a61f5d375abcc730a52f149fb3b1cdca04a394b59
run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #1: crashed: INFO: rcu detected stall in smp_call_function
run #2: crashed: INFO: rcu detected stall in net_tx_action
run #3: crashed: INFO: rcu detected stall in wb_workfn
run #4: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #5: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #6: crashed: INFO: rcu detected stall in process_one_work
run #7: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #8: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #9: crashed: INFO: rcu detected stall in smp_call_function
run #10: crashed: INFO: rcu detected stall in ipv6_rcv
run #11: crashed: INFO: rcu detected stall in smp_call_function
run #12: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #13: crashed: INFO: rcu detected stall in _get_random_bytes
run #14: crashed: INFO: rcu detected stall in ieee80211_iface_work
run #15: crashed: INFO: rcu detected stall in wg_packet_handshake_receive_worker
run #16: crashed: INFO: rcu detected stall in ipv6_rcv
run #17: crashed: BUG: soft lockup in mac80211_hwsim_beacon
run #18: crashed: INFO: rcu detected stall in mac80211_hwsim_beacon
run #19: crashed: no output from test machine
testing current HEAD e1bec7fa1cee311a6d3fb9161037c7675904134d
testing commit e1bec7fa1cee311a6d3fb9161037c7675904134d
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: f170592db894a26cb390c4cf9aaff9b8d26903ff71d643e55a6d312a688d77e8
run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM
run #1: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #2: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #3: crashed: BUG: soft lockup in tc_modify_qdisc
run #4: crashed: INFO: rcu detected stall in batadv_purge_orig
run #5: crashed: INFO: rcu detected stall in smp_call_function
run #6: crashed: INFO: rcu detected stall in batadv_purge_orig
run #7: crashed: INFO: rcu detected stall in wg_packet_handshake_receive_worker
run #8: crashed: INFO: rcu detected stall in gc_worker
run #9: crashed: INFO: task hung in corrupted
revisions tested: 2, total time: 29m1.609162879s (build: 12m56.842973125s, test: 15m11.276806952s)
the crash still happens on HEAD
commit msg: net: dsa: make dsa_tree_change_tag_proto actually unwind the tag proto change
crash: INFO: task hung in corrupted
INFO: task kworker/1:1:25 blocked for more than 150 seconds.
      Not tainted 5.17.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:26192 pid:   25 ppid:     2 flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4995 [inline]
 __schedule+0x90d/0x2680 kernel/sched/core.c:6304
 schedule+0xd2/0x260 kernel/sched/core.c:6377
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436
 __mutex_lock_common kernel/locking/mutex.c:673 [inline]
 __mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733