bisecting fixing commit since 4b0986a3613c92f4ec1bdc7f60ec66fea135991f
building syzkaller on 4c7657cb23023fd64d0585c979e6fec4ef441f04
testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 84b540f76ed43be75b83a34644d3bb8a78ffca58e31a3bfe81355292c8227262
run #0: crashed: KASAN: use-after-free Write in udf_open_lvid
run #1: crashed: KASAN: use-after-free Write in udf_open_lvid
run #2: crashed: KASAN: slab-out-of-bounds Write in udf_close_lvid
run #3: crashed: KASAN: use-after-free Write in udf_open_lvid
run #4: crashed: KASAN: use-after-free Write in udf_close_lvid
run #5: crashed: KASAN: use-after-free Write in udf_close_lvid
run #6: crashed: KASAN: use-after-free Write in udf_close_lvid
run #7: crashed: KASAN: use-after-free Write in udf_open_lvid
run #8: crashed: KASAN: use-after-free Write in udf_open_lvid
run #9: crashed: KASAN: slab-out-of-bounds Write in udf_open_lvid
run #10: crashed: KASAN: slab-out-of-bounds Write in udf_close_lvid
run #11: crashed: KASAN: use-after-free Write in udf_close_lvid
run #12: crashed: KASAN: slab-out-of-bounds Write in udf_close_lvid
run #13: crashed: KASAN: use-after-free Write in udf_close_lvid
run #14: crashed: KASAN: use-after-free Write in udf_close_lvid
run #15: crashed: KASAN: use-after-free Write in udf_close_lvid
run #16: crashed: KASAN: slab-out-of-bounds Write in udf_open_lvid
run #17: crashed: KASAN: use-after-free Write in udf_close_lvid
run #18: crashed: KASAN: use-after-free Write in udf_close_lvid
run #19: OK
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: 98aebf142f97ff9618abe06518c3028ad79fc773b24c6288e1efa2b37106bbfe
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: KASAN: use-after-free Write in udf_open_lvid
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: crashed: KASAN: use-after-free Write in udf_close_lvid
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
revisions tested: 2, total time: 34m24.455115294s (build: 13m35.419757934s, test: 20m17.987303701s)
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: {
 } 9 jiffies s: 4945 root: 0x0/.