==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: null-ptr-deref in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
BUG: KASAN: null-ptr-deref in set_buffer_uptodate include/linux/buffer_head.h:147 [inline]
BUG: KASAN: null-ptr-deref in do_journal_end+0x105d/0x4650 fs/reiserfs/journal.c:4079
Read of size 8 at addr 0000000000000000 by task kworker/0:2/24843

CPU: 0 PID: 24843 Comm: kworker/0:2 Not tainted 5.15.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: events_long flush_old_commits
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 __kasan_report mm/kasan/report.c:438 [inline]
 kasan_report+0x161/0x1c0 mm/kasan/report.c:451
 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 set_buffer_uptodate include/linux/buffer_head.h:147 [inline]
 do_journal_end+0x105d/0x4650 fs/reiserfs/journal.c:4079
 reiserfs_sync_fs fs/reiserfs/super.c:78 [inline]
 flush_old_commits+0x20d/0x2e0 fs/reiserfs/super.c:111
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
==================================================================
Kernel panic - not syncing: KASAN: panic_on_warn set ...
CPU: 0 PID: 24843 Comm: kworker/0:2 Tainted: G    B             5.15.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: events_long flush_old_commits
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 panic+0x318/0x84d kernel/panic.c:309
 check_panic_on_warn+0x7e/0xa0 kernel/panic.c:229
 end_report+0x6d/0xf0 mm/kasan/report.c:121
 __kasan_report mm/kasan/report.c:441 [inline]
 kasan_report+0x18e/0x1c0 mm/kasan/report.c:451
 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 set_buffer_uptodate include/linux/buffer_head.h:147 [inline]
 do_journal_end+0x105d/0x4650 fs/reiserfs/journal.c:4079
 reiserfs_sync_fs fs/reiserfs/super.c:78 [inline]
 flush_old_commits+0x20d/0x2e0 fs/reiserfs/super.c:111
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..