bisecting fixing commit since 4fa640dc52302b5e62b01b05c755b055549633ae
building syzkaller on d88894e6773ab63ac8b3f4b2edbae88290aaf0d6
testing commit 4fa640dc52302b5e62b01b05c755b055549633ae
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 36c63fda3960456ba6291ae4a5e7feed0e590a268e9065c5df75bcd021e52baa
run #0: crashed: BUG: soft lockup in do_idle
run #1: crashed: BUG: soft lockup in do_idle
run #2: crashed: BUG: soft lockup in do_idle
run #3: crashed: BUG: soft lockup in addrconf_rs_timer
run #4: crashed: BUG: soft lockup in do_idle
run #5: crashed: BUG: soft lockup in do_idle
run #6: crashed: BUG: soft lockup in linkwatch_event
run #7: crashed: BUG: soft lockup in do_idle
run #8: crashed: BUG: soft lockup in do_idle
run #9: crashed: BUG: soft lockup in do_idle
run #10: crashed: BUG: soft lockup in do_idle
run #11: crashed: BUG: soft lockup in do_idle
run #12: crashed: BUG: workqueue lockup
run #13: crashed: BUG: soft lockup in do_idle
run #14: crashed: BUG: soft lockup in do_idle
run #15: crashed: BUG: soft lockup in do_idle
run #16: crashed: BUG: soft lockup in do_idle
run #17: crashed: BUG: soft lockup in linkwatch_event
run #18: crashed: BUG: soft lockup in smp_call_function
run #19: crashed: BUG: soft lockup in tun_chr_close
testing current HEAD 4f3d93c6eaff6b84e43b63e0d7a119c5920e1020
testing commit 4f3d93c6eaff6b84e43b63e0d7a119c5920e1020
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: aed97fa5e489b30115cd2ee5d4fb1197810f4d4743fbe0289c808e209f3ab1b7
run #0: crashed: BUG: soft lockup in neigh_managed_work
run #1: crashed: BUG: soft lockup in rtnl_newlink
run #2: crashed: BUG: soft lockup in smp_call_function
run #3: crashed: BUG: soft lockup in batadv_nc_worker
run #4: crashed: BUG: soft lockup in rtnl_newlink
run #5: crashed: BUG: soft lockup in linkwatch_event
run #6: crashed: BUG: soft lockup in netlink_sendmsg
run #7: crashed: INFO: rcu detected stall in linkwatch_event
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: no output from test machine
revisions tested: 2, total time: 24m7.265489921s (build: 11m12.991156367s, test: 12m2.513842365s)
the crash still happens on HEAD
commit msg: Merge tag 'drm-fixes-2021-12-31' of git://anongit.freedesktop.org/drm/drm
crash: no output from test machine