ci starts bisection 2022-11-08 06:23:36.084530333 +0000 UTC m=+16741.921352754
bisecting fixing commit since 06f7db9499937c6496d697a765ac05cdcd37f381
building syzkaller on 60af505093169db753e7b7b319460495e4df554b
ensuring issue is reproducible on original commit 06f7db9499937c6496d697a765ac05cdcd37f381

testing commit 06f7db9499937c6496d697a765ac05cdcd37f381 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: fb118e4e3b1b6c4c616259bd306cd23b9067a23f5b04208c5dea971181f00503
run #0: crashed: general protection fault in mon_bin_flush
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: KASAN: slab-out-of-bounds Read in mon_bin_flush
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: KASAN: slab-out-of-bounds Read in mon_bin_flush
run #7: crashed: KASAN: use-after-free Read in mon_bin_flush
run #8: crashed: KASAN: use-after-free Read in mon_bin_flush
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: crashed: KASAN: slab-out-of-bounds Read in mon_bin_flush
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: crashed: KASAN: use-after-free Read in mon_bin_flush
run #13: crashed: general protection fault in mon_bin_flush
run #14: crashed: INFO: rcu detected stall in corrupted
run #15: crashed: general protection fault in mon_bin_flush
run #16: crashed: INFO: rcu detected stall in corrupted
run #17: crashed: KASAN: use-after-free Read in mon_bin_flush
run #18: crashed: general protection fault in mon_bin_flush
run #19: crashed: KASAN: use-after-free Read in mon_bin_flush
testing current HEAD 59f2f4b8a757412fce372f6d0767bdb55da127a8
testing commit 59f2f4b8a757412fce372f6d0767bdb55da127a8 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 6170529c7a84c6b05d2c743924b836c560b3b44be4b72f739f189dc1429cf17d
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: OK
run #8: OK
run #9: OK
revisions tested: 2, total time: 33m49.496670749s (build: 13m39.30671688s, test: 19m26.227017079s)
the crash still happens on HEAD
commit msg: fs/userfaultfd: Fix maple tree iterator in userfaultfd_unregister()
crash: INFO: rcu detected stall in corrupted
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P41 } 2682 jiffies s: 5861 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):