lbmIODone: I/O error in JFS log
*** Log Format Error ! ***
lmLogInit: exit(-22)
lmLogOpen: exit(-22)
jfs_dirty_inode called on read-only volume
Is remount racy?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:68 [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 txBeginAnon+0x17f/0x3d0 fs/jfs/jfs_txnmgr.c:466
Read of size 8 at addr 0000000000000040 by task syz.3.21/5903

CPU: 1 PID: 5903 Comm: syz.3.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 kasan_report+0x117/0x150 mm/kasan/report.c:581
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x241/0x290 mm/kasan/generic.c:187
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 txBeginAnon+0x17f/0x3d0 fs/jfs/jfs_txnmgr.c:466
 extAlloc+0xf1/0xf90 fs/jfs/jfs_extent.c:78
 jfs_get_block+0x359/0xad0 fs/jfs/inode.c:254
 get_more_blocks fs/direct-io.c:647 [inline]
 do_direct_IO fs/direct-io.c:935 [inline]
 __blockdev_direct_IO+0x1775/0x3500 fs/direct-io.c:1248
 blockdev_direct_IO include/linux/fs.h:3047 [inline]
 jfs_direct_IO+0x11b/0x220 fs/jfs/inode.c:337
 generic_file_direct_write+0x1d4/0x3e0 mm/filemap.c:3956
 __generic_file_write_iter+0x11b/0x230 mm/filemap.c:4112
 generic_file_write_iter+0xaf/0x2e0 mm/filemap.c:4152
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x738/0xc30 fs/read_write.c:860
 iter_file_splice_write+0x6a3/0xcb0 fs/splice.c:736
 do_splice_from fs/splice.c:933 [inline]
 direct_splice_actor+0xe8/0x130 fs/splice.c:1142
 splice_direct_to_actor+0x304/0x8c0 fs/splice.c:1088
 do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194
 do_sendfile+0x5f2/0xef0 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5e06d9c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5e07ccc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5e07015fa0 RCX: 00007f5e06d9c819
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f5e06e32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe85 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5e07016038 R14: 00007f5e07015fa0 R15: 00007ffd2644fb08
 </TASK>
==================================================================