loop0: detected capacity change from 0 to 32768
find_entry called with index = 0
read_mapping_page failed!
ERROR: (device loop0): txCommit: 
ERROR: (device loop0): txBegin: txBegin: log is NULL
==================================================================
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 txBegin+0x158/0x6e0 fs/jfs/jfs_txnmgr.c:369
Read of size 8 at addr 0000000000000040 by task syz-executor.0/5605

CPU: 1 PID: 5605 Comm: syz-executor.0 Not tainted 6.3.0-rc3-syzkaller-00012-g17214b70a159-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_report+0xe6/0x540 mm/kasan/report.c:433
 kasan_report+0x176/0x1b0 mm/kasan/report.c:536
 kasan_check_range+0x283/0x290 mm/kasan/generic.c:187
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 txBegin+0x158/0x6e0 fs/jfs/jfs_txnmgr.c:369
 jfs_link+0x1ac/0x5e0 fs/jfs/namei.c:802
 vfs_link+0x4ed/0x680 fs/namei.c:4522
 do_linkat+0x5cc/0x9e0 fs/namei.c:4593
 __do_sys_linkat fs/namei.c:4621 [inline]
 __se_sys_linkat fs/namei.c:4618 [inline]
 __x64_sys_linkat+0xdd/0xf0 fs/namei.c:4618
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f08d2a8c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f08d3844168 EFLAGS: 00000246 ORIG_RAX: 0000000000000109
RAX: ffffffffffffffda RBX: 00007f08d2babf80 RCX: 00007f08d2a8c0f9
RDX: 0000000000000004 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f08d2ae7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdfe18d37f R14: 00007f08d3844300 R15: 0000000000022000
 </TASK>
==================================================================