WARNING: The mand mount option has been deprecated and
and is ignored by this kernel. Remove the mand
option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
==================================================================
BUG: KASAN: use-after-free in ocfs2_dir_foreach_blk_id fs/ocfs2/dir.c:1776 [inline]
BUG: KASAN: use-after-free in ocfs2_dir_foreach_blk+0x14f8/0x1e10 fs/ocfs2/dir.c:1914
Read of size 2 at addr ffff88806ecc88c9 by task syz-executor260/4249
CPU: 1 PID: 4249 Comm: syz-executor260 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description mm/kasan/report.c:316 [inline]
print_report+0x15f/0x4f0 mm/kasan/report.c:427
kasan_report+0x136/0x160 mm/kasan/report.c:531
ocfs2_dir_foreach_blk_id fs/ocfs2/dir.c:1776 [inline]
ocfs2_dir_foreach_blk+0x14f8/0x1e10 fs/ocfs2/dir.c:1914
ocfs2_readdir+0x28a/0x620 fs/ocfs2/dir.c:1957
iterate_dir+0x224/0x560
__do_sys_getdents fs/readdir.c:286 [inline]
__se_sys_getdents+0x1eb/0x4c0 fs/readdir.c:271
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f697ab7e0e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 1d 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe36559f78 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 6f6c666c61636f6c RCX: 00007f697ab7e0e9
RDX: 0000000000000054 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f697abcb5e7 R08: 0000000000000004 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000246 R12: 00007f697abcb568
R13: 00007ffe3655a000 R14: 00007f697ac05740 R15: 00007ffe36559fd8
</TASK>
The buggy address belongs to the physical page:
page:ffffea0001bb3200 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x6ecc8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea0001bb3248 ffffea0001bb31c8 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x8(__GFP_MOVABLE), pid 1, tgid 1 (swapper/0), ts 19735888832, free_ts 21162749813
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2532
split_map_pages+0x246/0x510 mm/compaction.c:97
isolate_freepages_range+0x47c/0x4e0 mm/compaction.c:735
alloc_contig_range+0x62a/0x990 mm/page_alloc.c:9440
__alloc_contig_pages mm/page_alloc.c:9463 [inline]
alloc_contig_pages+0x3f0/0x4e0 mm/page_alloc.c:9543
debug_vm_pgtable_alloc_huge_page+0xb9/0x108 mm/debug_vm_pgtable.c:1098
init_args+0xc92/0x1022 mm/debug_vm_pgtable.c:1221
debug_vm_pgtable+0xaa/0x46b mm/debug_vm_pgtable.c:1259
do_one_initcall+0x265/0x8f0 init/main.c:1298
do_initcall_level+0x157/0x207 init/main.c:1371
do_initcalls+0x49/0x86 init/main.c:1387
kernel_init_freeable+0x45c/0x60f init/main.c:1626
kernel_init+0x19/0x290 init/main.c:1514
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1459 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x12a6/0x15b0 mm/page_alloc.c:3384
free_unref_page+0x33/0x3e0 mm/page_alloc.c:3479
free_contig_range+0x9a/0x150 mm/page_alloc.c:9565
destroy_args+0xfe/0x997 mm/debug_vm_pgtable.c:1031
debug_vm_pgtable+0x416/0x46b mm/debug_vm_pgtable.c:1354
do_one_initcall+0x265/0x8f0 init/main.c:1298
do_initcall_level+0x157/0x207 init/main.c:1371
do_initcalls+0x49/0x86 init/main.c:1387
kernel_init_freeable+0x45c/0x60f init/main.c:1626
kernel_init+0x19/0x290 init/main.c:1514
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Memory state around the buggy address:
ffff88806ecc8780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88806ecc8800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88806ecc8880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88806ecc8900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88806ecc8980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================