[syzbot] [jfs?] KASAN: slab-use-after-free Read in jfs_evict_inode
From: syzbot
Date: Fri Oct 27 2023 - 01:15:31 EST
Hello,
syzbot found the following issue on:
HEAD commit: fe3cfe869d5e Merge tag 'phy-fixes-6.6' of git://git.kernel..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=15db4635680000
kernel config: https://syzkaller.appspot.com/x/.config?x=b400c09b1315b112
dashboard link: https://syzkaller.appspot.com/bug?extid=01cf2dbcbe2022454388
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=170eb95d680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/57e585f5caff/disk-fe3cfe86.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d2904450b051/vmlinux-fe3cfe86.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8fb732d9bee9/bzImage-fe3cfe86.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/be380785486a/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+01cf2dbcbe2022454388@xxxxxxxxxxxxxxxxxxxxxxxxx
jfs_mount: diMount failed w/rc = -5
==================================================================
BUG: KASAN: slab-use-after-free in jfs_evict_inode+0x4aa/0x4b0 fs/jfs/inode.c:155
Read of size 8 at addr ffff88806356f970 by task syz-executor.5/6182
CPU: 0 PID: 6182 Comm: syz-executor.5 Not tainted 6.6.0-rc6-syzkaller-00355-gfe3cfe869d5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:475
kasan_report+0xda/0x110 mm/kasan/report.c:588
jfs_evict_inode+0x4aa/0x4b0 fs/jfs/inode.c:155
evict+0x2ed/0x6b0 fs/inode.c:664
iput_final fs/inode.c:1775 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1801
iput+0x5c/0x80 fs/inode.c:1791
diFreeSpecial+0x7a/0x110 fs/jfs/jfs_imap.c:549
jfs_mount+0x471/0x890 fs/jfs/jfs_mount.c:203
jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556
mount_bdev+0x1f3/0x2e0 fs/super.c:1629
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8c/0x370 fs/super.c:1750
do_new_mount fs/namespace.c:3335 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3662
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fac16a7e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007fac178baee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fac178baf80 RCX: 00007fac16a7e1ea
RDX: 0000000020002400 RSI: 0000000020000040 RDI: 00007fac178baf40
RBP: 0000000020002400 R08: 00007fac178baf80 R09: 0000000000000080
R10: 0000000000000080 R11: 0000000000000246 R12: 0000000020000040
R13: 00007fac178baf40 R14: 0000000000002332 R15: 0000000020002500
</TASK>
Allocated by task 6182:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
__kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slab.c:3237 [inline]
slab_alloc mm/slab.c:3246 [inline]
__kmem_cache_alloc_lru mm/slab.c:3423 [inline]
kmem_cache_alloc_lru+0x202/0x6d0 mm/slab.c:3439
alloc_inode_sb include/linux/fs.h:2868 [inline]
jfs_alloc_inode+0x25/0x60 fs/jfs/super.c:105
alloc_inode+0x5d/0x220 fs/inode.c:259
new_inode_pseudo fs/inode.c:1004 [inline]
new_inode+0x22/0x260 fs/inode.c:1030
diReadSpecial+0x51/0x6e0 fs/jfs/jfs_imap.c:423
jfs_mount+0x31e/0x890 fs/jfs/jfs_mount.c:166
jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556
mount_bdev+0x1f3/0x2e0 fs/super.c:1629
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8c/0x370 fs/super.c:1750
do_new_mount fs/namespace.c:3335 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3662
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 5231:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x138/0x190 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
__cache_free mm/slab.c:3370 [inline]
__do_kmem_cache_free mm/slab.c:3557 [inline]
kmem_cache_free+0x104/0x380 mm/slab.c:3582
i_callback+0x43/0x70 fs/inode.c:248
rcu_do_batch kernel/rcu/tree.c:2139 [inline]
rcu_core+0x805/0x1bb0 kernel/rcu/tree.c:2403
__do_softirq+0x218/0x965 kernel/softirq.c:553
Last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
destroy_inode+0x129/0x1b0 fs/inode.c:314
iput_final fs/inode.c:1775 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1801
iput+0x5c/0x80 fs/inode.c:1791
diFreeSpecial+0x7a/0x110 fs/jfs/jfs_imap.c:549
jfs_mount+0x424/0x890 fs/jfs/jfs_mount.c:191
jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556
mount_bdev+0x1f3/0x2e0 fs/super.c:1629
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8c/0x370 fs/super.c:1750
do_new_mount fs/namespace.c:3335 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3662
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Second to last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
destroy_inode+0x129/0x1b0 fs/inode.c:314
iput_final fs/inode.c:1775 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1801
iput+0x5c/0x80 fs/inode.c:1791
jfs_fill_super+0x95c/0xd20 fs/jfs/super.c:607
mount_bdev+0x1f3/0x2e0 fs/super.c:1629
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8c/0x370 fs/super.c:1750
do_new_mount fs/namespace.c:3335 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3662
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The buggy address belongs to the object at ffff88806356f5c0
which belongs to the cache jfs_ip of size 2240
The buggy address is located 944 bytes inside of
freed 2240-byte region [ffff88806356f5c0, ffff88806356fe80)
The buggy address belongs to the physical page:
page:ffffea00018d5bc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88806356ffff pfn:0x6356f
memcg:ffff888028945f41
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0x1()
raw: 00fff00000000800 ffff8881422a8700 ffffea00018d5c90 ffffea00018d6350
raw: ffff88806356ffff ffff88806356f5c0 0000000100000001 ffff888028945f41
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x342050(__GFP_IO|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE|__GFP_RECLAIMABLE), pid 5219, tgid 5216 (syz-executor.1), ts 145722879804, free_ts 145541609248
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
__alloc_pages_node include/linux/gfp.h:237 [inline]
kmem_getpages mm/slab.c:1356 [inline]
cache_grow_begin+0x99/0x3a0 mm/slab.c:2550
cache_alloc_refill+0x294/0x3a0 mm/slab.c:2923
____cache_alloc mm/slab.c:2999 [inline]
____cache_alloc mm/slab.c:2982 [inline]
__do_cache_alloc mm/slab.c:3182 [inline]
slab_alloc_node mm/slab.c:3230 [inline]
slab_alloc mm/slab.c:3246 [inline]
__kmem_cache_alloc_lru mm/slab.c:3423 [inline]
kmem_cache_alloc_lru+0x566/0x6d0 mm/slab.c:3439
alloc_inode_sb include/linux/fs.h:2868 [inline]
jfs_alloc_inode+0x25/0x60 fs/jfs/super.c:105
alloc_inode+0x5d/0x220 fs/inode.c:259
new_inode_pseudo fs/inode.c:1004 [inline]
new_inode+0x22/0x260 fs/inode.c:1030
diReadSpecial+0x51/0x6e0 fs/jfs/jfs_imap.c:423
jfs_mount+0xe0/0x890 fs/jfs/jfs_mount.c:87
jfs_fill_super+0x5a3/0xd20 fs/jfs/super.c:556
mount_bdev+0x1f3/0x2e0 fs/super.c:1629
legacy_get_tree+0x109/0x220 fs/fs_context.c:662
vfs_get_tree+0x8c/0x370 fs/super.c:1750
do_new_mount fs/namespace.c:3335 [inline]
path_mount+0x1492/0x1ed0 fs/namespace.c:3662
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405
slab_destroy mm/slab.c:1608 [inline]
slabs_destroy+0x85/0xc0 mm/slab.c:1628
cache_flusharray mm/slab.c:3341 [inline]
___cache_free+0x2b7/0x420 mm/slab.c:3404
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x4c/0x1b0 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slab.c:3237 [inline]
__kmem_cache_alloc_node+0x163/0x470 mm/slab.c:3521
__do_kmalloc_node mm/slab_common.c:1025 [inline]
__kmalloc+0x4f/0x100 mm/slab_common.c:1039
kmalloc_array include/linux/slab.h:636 [inline]
kcalloc include/linux/slab.h:667 [inline]
ext4_find_extent+0x958/0xce0 fs/ext4/extents.c:914
ext4_ext_map_blocks+0x26b/0x5b10 fs/ext4/extents.c:4101
ext4_map_blocks+0x844/0x1770 fs/ext4/inode.c:548
ext4_append+0x1fb/0x560 fs/ext4/namei.c:75
ext4_init_new_dir+0x220/0x4c0 fs/ext4/namei.c:2981
ext4_mkdir+0x316/0xb70 fs/ext4/namei.c:3027
vfs_mkdir+0x532/0x7e0 fs/namei.c:4121
Memory state around the buggy address:
ffff88806356f800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88806356f880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88806356f900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88806356f980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88806356fa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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