==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: null-ptr-deref in set_buffer_uptodate include/linux/buffer_head.h:148 [inline]
BUG: KASAN: null-ptr-deref in do_journal_end+0xfdc/0x4870 fs/reiserfs/journal.c:4083
Read of size 8 at addr 0000000000000000 by task kworker/1:0/22

CPU: 1 PID: 22 Comm: kworker/1:0 Not tainted 6.1.69-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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
 print_report+0xe6/0x4f0 mm/kasan/report.c:398
 kasan_report+0x136/0x160 mm/kasan/report.c:495
 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 set_buffer_uptodate include/linux/buffer_head.h:148 [inline]
 do_journal_end+0xfdc/0x4870 fs/reiserfs/journal.c:4083
 reiserfs_sync_fs fs/reiserfs/super.c:78 [inline]
 flush_old_commits+0x20d/0x2e0 fs/reiserfs/super.c:111
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
==================================================================
Kernel panic - not syncing: KASAN: panic_on_warn set ...
CPU: 1 PID: 22 Comm: kworker/1:0 Not tainted 6.1.69-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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+0x318/0x75d kernel/panic.c:339
 check_panic_on_warn+0x7e/0xa0 kernel/panic.c:235
 end_report+0x66/0x110 mm/kasan/report.c:168
 kasan_report+0x143/0x160 mm/kasan/report.c:497
 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 set_buffer_uptodate include/linux/buffer_head.h:148 [inline]
 do_journal_end+0xfdc/0x4870 fs/reiserfs/journal.c:4083
 reiserfs_sync_fs fs/reiserfs/super.c:78 [inline]
 flush_old_commits+0x20d/0x2e0 fs/reiserfs/super.c:111
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..