IPVS: ftp: loaded support on port[0] = 21
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BUG: KASAN: use-after-free in dbJoin+0x1ee/0x200 fs/jfs/jfs_dmap.c:2849
Read of size 1 at addr ffff8881a9008a4c by task jfsCommit/1964
CPU: 1 PID: 1964 Comm: jfsCommit Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
kasan_report mm/kasan/report.c:409 [inline]
__asan_report_load1_noabort+0x68/0x70 mm/kasan/report.c:427
dbJoin+0x1ee/0x200 fs/jfs/jfs_dmap.c:2849
dbFreeBits+0xd4/0x660 fs/jfs/jfs_dmap.c:2386
dbFreeDmap+0x61/0x180 fs/jfs/jfs_dmap.c:2135
dbFree+0x20c/0x4b0 fs/jfs/jfs_dmap.c:392
txFreeMap+0x691/0xa00 fs/jfs/jfs_txnmgr.c:2579
txUpdateMap+0x2e3/0xe30 fs/jfs/jfs_txnmgr.c:2375
txLazyCommit fs/jfs/jfs_txnmgr.c:2709 [inline]
jfs_lazycommit+0x48b/0x8c0 fs/jfs/jfs_txnmgr.c:2777
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
The buggy address belongs to the page:
page:ffffea0006a40200 count:0 mapcount:0 mapping: (null) index:0x0
flags: 0x57ff00000000000()
raw: 057ff00000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: ffffea0006a40220 ffffea0006a40220 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8881a9008900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881a9008980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881a9008a00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8881a9008a80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881a9008b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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