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Message-ID: <0000000000003c68f3061fd2c285@google.com>
Date: Fri, 16 Aug 2024 13:25:22 -0700
From: syzbot <syzbot+3e563d99e70973c0755c@...kaller.appspotmail.com>
To: andreyknvl@...il.com, gregkh@...uxfoundation.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
syzkaller-bugs@...glegroups.com
Subject: [syzbot] [usb?] KASAN: invalid-free in dev_free
Hello,
syzbot found the following issue on:
HEAD commit: 6b0f8db921ab Merge tag 'execve-v6.11-rc4' of git://git.ker..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=177484fd980000
kernel config: https://syzkaller.appspot.com/x/.config?x=54e9d4be0c7a0d11
dashboard link: https://syzkaller.appspot.com/bug?extid=3e563d99e70973c0755c
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-6b0f8db9.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5829b92d3000/vmlinux-6b0f8db9.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0b382f2bc118/bzImage-6b0f8db9.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3e563d99e70973c0755c@...kaller.appspotmail.com
==================================================================
BUG: KASAN: double-free in dev_free+0x446/0x700 drivers/usb/gadget/legacy/raw_gadget.c:225
Free of addr ffff888107b54de0 by task syz.1.409/6669
CPU: 0 UID: 0 PID: 6669 Comm: syz.1.409 Not tainted 6.11.0-rc3-syzkaller-00013-g6b0f8db921ab #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report_invalid_free+0xaa/0xd0 mm/kasan/report.c:563
poison_slab_object+0x135/0x160 mm/kasan/common.c:232
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kfree+0x12a/0x3b0 mm/slub.c:4594
dev_free+0x446/0x700 drivers/usb/gadget/legacy/raw_gadget.c:225
kref_put include/linux/kref.h:65 [inline]
raw_release+0x188/0x2f0 drivers/usb/gadget/legacy/raw_gadget.c:473
__fput+0x408/0xbb0 fs/file_table.c:422
__fput_sync+0x47/0x50 fs/file_table.c:507
__do_sys_close fs/open.c:1566 [inline]
__se_sys_close fs/open.c:1551 [inline]
__x64_sys_close+0x86/0x100 fs/open.c:1551
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0af717868a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 13 8b 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 73 8b 02 00 8b 44 24
RSP: 002b:00007f0af7f85ff0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f0af7315f80 RCX: 00007f0af717868a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f0af71e78ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0af7315f80 R15: 00007ffd55eaee78
</TASK>
Allocated by task 6671:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:4158 [inline]
__kmalloc_node_track_caller_noprof+0x20f/0x430 mm/slub.c:4177
memdup_user+0x2a/0xd0 mm/util.c:226
raw_ioctl_ep_enable drivers/usb/gadget/legacy/raw_gadget.c:847 [inline]
raw_ioctl+0xbca/0x2b90 drivers/usb/gadget/legacy/raw_gadget.c:1318
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x193/0x220 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 6669:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kfree+0x12a/0x3b0 mm/slub.c:4594
dev_free+0x446/0x700 drivers/usb/gadget/legacy/raw_gadget.c:225
kref_put include/linux/kref.h:65 [inline]
raw_release+0x188/0x2f0 drivers/usb/gadget/legacy/raw_gadget.c:473
__fput+0x408/0xbb0 fs/file_table.c:422
__fput_sync+0x47/0x50 fs/file_table.c:507
__do_sys_close fs/open.c:1566 [inline]
__se_sys_close fs/open.c:1551 [inline]
__x64_sys_close+0x86/0x100 fs/open.c:1551
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff888107b54de0
which belongs to the cache kmalloc-16 of size 16
The buggy address is located 0 bytes inside of
16-byte region [ffff888107b54de0, ffff888107b54df0)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107b54
flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 057ff00000000000 ffff888015842640 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000800080 00000001fdffffff 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 0x352800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 5917, tgid 5917 (syz-executor), ts 274370933809, free_ts 273397742220
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x1351/0x2e50 mm/page_alloc.c:3442
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4700
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x4e/0xf0 mm/slub.c:2321
allocate_slab mm/slub.c:2484 [inline]
new_slab+0x84/0x260 mm/slub.c:2537
___slab_alloc+0xdac/0x1870 mm/slub.c:3723
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3813
__slab_alloc_node mm/slub.c:3866 [inline]
slab_alloc_node mm/slub.c:4025 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_node_noprof+0x357/0x430 mm/slub.c:4164
__kvmalloc_node_noprof+0x9d/0x1a0 mm/util.c:650
xt_jumpstack_alloc net/netfilter/x_tables.c:1355 [inline]
xt_replace_table+0x1c7/0x910 net/netfilter/x_tables.c:1394
__do_replace+0x1d9/0x9c0 net/ipv4/netfilter/arp_tables.c:912
do_replace net/ipv6/netfilter/ip6_tables.c:1158 [inline]
do_ip6t_set_ctl+0x94b/0xc40 net/ipv6/netfilter/ip6_tables.c:1644
nf_setsockopt+0x8a/0xf0 net/netfilter/nf_sockopt.c:101
ipv6_setsockopt+0x133/0x1a0 net/ipv6/ipv6_sockglue.c:998
tcp_setsockopt+0xa4/0x100 net/ipv4/tcp.c:3768
do_sock_setsockopt+0x222/0x480 net/socket.c:2324
page last free pid 6016 tgid 6016 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2612
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4044
vm_area_dup+0x21/0x2f0 kernel/fork.c:486
__split_vma+0x181/0x11c0 mm/mmap.c:2465
split_vma mm/mmap.c:2537 [inline]
vma_modify+0x1ec/0x360 mm/mmap.c:2571
vma_modify_flags include/linux/mm.h:3298 [inline]
mprotect_fixup+0x220/0xc40 mm/mprotect.c:639
do_mprotect_pkey+0x9d7/0xd70 mm/mprotect.c:822
__do_sys_mprotect mm/mprotect.c:843 [inline]
__se_sys_mprotect mm/mprotect.c:840 [inline]
__x64_sys_mprotect+0x78/0xc0 mm/mprotect.c:840
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff888107b54c80: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc
ffff888107b54d00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
>ffff888107b54d80: fa fb fc fc 00 00 fc fc fa fb fc fc fa fb fc fc
^
ffff888107b54e00: 00 00 fc fc fa fb fc fc fa fb fc fc fa fb fc fc
ffff888107b54e80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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If the report is a duplicate of another one, reply with:
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#syz undup
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