KASAN: invalid-free in bitmap_free

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: e2aed161fc26 ANDROID: GKI: fix up abi breakage in fib_rule..
git tree: android12-5.10-lts
console output: https://syzkaller.appspot.com/x/log.txt?x=130e9341b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=499530ba138a51de
dashboard link: https://syzkaller.appspot.com/bug?extid=8253174b8b14d780789f
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=154ca551b00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15c60bb9b00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+825317...@syzkaller.appspotmail.com

==================================================================
BUG: KASAN: double-free or invalid-free in slab_free mm/slub.c:3204 [inline]
BUG: KASAN: double-free or invalid-free in kfree+0xd5/0x320 mm/slub.c:4192

CPU: 1 PID: 8660 Comm: syz-executor502 Not tainted 5.10.84-syzkaller-00439-ge2aed161fc26 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
print_address_description+0x8d/0x3d0 mm/kasan/report.c:233
kasan_report_invalid_free+0x58/0x130 mm/kasan/report.c:358
____kasan_slab_free+0x14b/0x170 mm/kasan/common.c:362
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:368
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1596 [inline]
slab_free_freelist_hook+0xcc/0x1a0 mm/slub.c:1622
slab_free mm/slub.c:3204 [inline]
kfree+0xd5/0x320 mm/slub.c:4192
bitmap_free+0x15/0x20 lib/bitmap.c:1261
packet_set_ring+0x17f1/0x25c0 net/packet/af_packet.c:4464
packet_setsockopt+0x12f2/0x49d0 net/packet/af_packet.c:3750
__sys_setsockopt+0x4e1/0x870 net/socket.c:2122
__do_sys_setsockopt net/socket.c:2133 [inline]
__se_sys_setsockopt net/socket.c:2130 [inline]
__x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2130
do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f4b276cba19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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:00007f4b2765c318 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f4b277533f8 RCX: 00007f4b276cba19
RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000003
RBP: 00007f4b277533f0 R08: 000000000000001c R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 00007f4b27721074
R13: 00007fff8b9af4af R14: 00007f4b2765c400 R15: 0000000000022000

Allocated by task 8658:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:428 [inline]
____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:507
__kasan_kmalloc+0x9/0x10 mm/kasan/common.c:516
kasan_kmalloc include/linux/kasan.h:269 [inline]
__kmalloc+0x22a/0x3d0 mm/slub.c:4034
kmalloc_array include/linux/slab.h:592 [inline]
kcalloc include/linux/slab.h:603 [inline]
alloc_pg_vec net/packet/af_packet.c:4286 [inline]
packet_set_ring+0x6b9/0x25c0 net/packet/af_packet.c:4376
packet_setsockopt+0x12f2/0x49d0 net/packet/af_packet.c:3750
__sys_setsockopt+0x4e1/0x870 net/socket.c:2122
__do_sys_setsockopt net/socket.c:2133 [inline]
__se_sys_setsockopt net/socket.c:2130 [inline]
__x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2130
do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 8658:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4c/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:357
____kasan_slab_free+0x133/0x170 mm/kasan/common.c:360
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:368
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1596 [inline]
slab_free_freelist_hook+0xcc/0x1a0 mm/slub.c:1622
slab_free mm/slub.c:3204 [inline]
kfree+0xd5/0x320 mm/slub.c:4192
free_pg_vec net/packet/af_packet.c:4252 [inline]
packet_set_ring+0x191b/0x25c0 net/packet/af_packet.c:4466
packet_setsockopt+0x12f2/0x49d0 net/packet/af_packet.c:3750
__sys_setsockopt+0x4e1/0x870 net/socket.c:2122
__do_sys_setsockopt net/socket.c:2133 [inline]
__se_sys_setsockopt net/socket.c:2130 [inline]
__x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2130
do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff88811a62de80
which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes inside of
64-byte region [ffff88811a62de80, ffff88811a62dec0)
The buggy address belongs to the page:
page:ffffea0004698b40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11a62d
flags: 0x8000000000000200(slab)
raw: 8000000000000200 dead000000000100 dead000000000122 ffff888100043800
raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 8619, ts 39135398155, free_ts 39131305737
set_page_owner include/linux/page_owner.h:35 [inline]
post_alloc_hook mm/page_alloc.c:2385 [inline]
prep_new_page mm/page_alloc.c:2391 [inline]
get_page_from_freelist+0xa74/0xa90 mm/page_alloc.c:4063
__alloc_pages_nodemask+0x3c8/0x820 mm/page_alloc.c:5106
alloc_slab_page mm/slub.c:1807 [inline]
allocate_slab+0x6b/0x350 mm/slub.c:1809
new_slab mm/slub.c:1870 [inline]
new_slab_objects mm/slub.c:2629 [inline]
___slab_alloc+0x143/0x2f0 mm/slub.c:2792
__slab_alloc mm/slub.c:2832 [inline]
slab_alloc_node mm/slub.c:2914 [inline]
slab_alloc mm/slub.c:2956 [inline]
__kmalloc+0x2af/0x3d0 mm/slub.c:4030
__kmalloc_node include/linux/slab.h:418 [inline]
kmalloc_node include/linux/slab.h:575 [inline]
__vmalloc_area_node mm/vmalloc.c:2483 [inline]
__vmalloc_node_range+0x28d/0x750 mm/vmalloc.c:2565
alloc_thread_stack_node kernel/fork.c:250 [inline]
dup_task_struct+0x6e6/0xde0 kernel/fork.c:899
copy_process+0x665/0x5340 kernel/fork.c:1989
kernel_clone+0x21f/0x9a0 kernel/fork.c:2510
__do_sys_clone kernel/fork.c:2629 [inline]
__se_sys_clone kernel/fork.c:2613 [inline]
__x64_sys_clone+0x258/0x2d0 kernel/fork.c:2613
do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
page last free stack trace:
reset_page_owner include/linux/page_owner.h:28 [inline]
free_pages_prepare mm/page_alloc.c:1331 [inline]
free_pcp_prepare+0x18f/0x1c0 mm/page_alloc.c:1405
free_unref_page_prepare mm/page_alloc.c:3291 [inline]
free_unref_page mm/page_alloc.c:3341 [inline]
free_the_page mm/page_alloc.c:5165 [inline]
__free_pages+0x2e3/0x4a0 mm/page_alloc.c:5173
__vunmap+0x856/0x980 mm/vmalloc.c:2275
free_work+0x66/0x90 mm/vmalloc.c:68
process_one_work+0x6b4/0xfb0 kernel/workqueue.c:2289
worker_thread+0xb15/0x1600 kernel/workqueue.c:2435
kthread+0x371/0x390 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Memory state around the buggy address:
ffff88811a62dd80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff88811a62de00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88811a62de80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
^
ffff88811a62df00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff88811a62df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================


---
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[syzbot]

syzbot suspects this issue was fixed by commit:

commit 7da349f07e457cad135df0920a3f670e423fb5e9
Author: Willem de Bruijn <wil...@google.com>
Date: Wed Dec 15 14:39:37 2021 +0000

net/packet: rx_owner_map depends on pg_vec

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1704c4bbb00000
start commit: e2aed161fc26 ANDROID: GKI: fix up abi breakage in fib_rule..
git tree: android12-5.10-lts

kernel config: https://syzkaller.appspot.com/x/.config?x=499530ba138a51de
dashboard link: https://syzkaller.appspot.com/bug?extid=8253174b8b14d780789f

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=154ca551b00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15c60bb9b00000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: net/packet: rx_owner_map depends on pg_vec

For information about bisection process see: https://goo.gl/tpsmEJ#bisection