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Message-ID: <000000000000dcb48a05e7eefddd@google.com>
Date: Mon, 05 Sep 2022 07:35:30 -0700
From: syzbot <syzbot+24e8438a720679b9b878@...kaller.appspotmail.com>
To: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-usb@...r.kernel.org, syzkaller-bugs@...glegroups.com,
viro@...iv.linux.org.uk
Subject: [syzbot] usb-testing boot error: general protection fault in kvmalloc_node
Hello,
syzbot found the following issue on:
HEAD commit: 10174220f55a usb: reduce kernel log spam on driver registr..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=131ee98b080000
kernel config: https://syzkaller.appspot.com/x/.config?x=3cb39b084894e9a5
dashboard link: https://syzkaller.appspot.com/bug?extid=24e8438a720679b9b878
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/cc623f81ac2e/disk-10174220.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d582f7185db2/vmlinux-10174220.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+24e8438a720679b9b878@...kaller.appspotmail.com
general protection fault, probably for non-canonical address 0xffff0fff00000800: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0xfff89ff800004000-0xfff89ff800004007]
CPU: 1 PID: 1149 Comm: mkdir Not tainted 6.0.0-rc1-syzkaller-00047-g10174220f55a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:freelist_dereference mm/slub.c:347 [inline]
RIP: 0010:get_freepointer mm/slub.c:354 [inline]
RIP: 0010:get_freepointer_safe mm/slub.c:368 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:3211 [inline]
RIP: 0010:__kmalloc_node+0x1dd/0x360 mm/slub.c:4468
Code: 48 83 c4 18 44 89 e1 4c 89 ea 5b 4c 89 fe 48 89 ef 5d 41 5c 41 5d 41 5e 41 5f e9 6e 55 00 00 48 8b 7d 00 8b 4d 28 40 f6 c7 0f <48> 8b 1c 08 0f 85 3d 01 00 00 48 8d 4a 08 65 48 0f c7 0f 0f 94 c0
RSP: 0018:ffffc900004e7c20 EFLAGS: 00010246
RAX: ffff0fff00000000 RBX: 0000000000400cc0 RCX: 0000000000000800
RDX: 0000000000000041 RSI: 0000000000400cc0 RDI: 000000000003b880
RBP: ffff88810004c280 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000400cc0
R13: 0000000000001000 R14: 0000000000000000 R15: ffffffff81632b1e
FS: 00007fd7fef3f800(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7ff039410 CR3: 000000010f2f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
kmalloc_node include/linux/slab.h:623 [inline]
kvmalloc_node+0x3e/0x190 mm/util.c:613
kvmalloc include/linux/slab.h:750 [inline]
seq_buf_alloc fs/seq_file.c:38 [inline]
seq_read_iter+0x7f7/0x1280 fs/seq_file.c:210
proc_reg_read_iter+0x1fb/0x2d0 fs/proc/inode.c:305
call_read_iter include/linux/fs.h:2181 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x67d/0x930 fs/read_write.c:470
ksys_read+0x127/0x250 fs/read_write.c:607
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd7ff0cb8fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007fff62d03468 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055cc8ec572a0 RCX: 00007fd7ff0cb8fe
RDX: 0000000000000400 RSI: 000055cc8ec57500 RDI: 0000000000000003
RBP: 00007fd7ff198380 R08: 0000000000000003 R09: 00007fd7ff19ba60
R10: 000000000000005d R11: 0000000000000246 R12: 00007fff62d03530
R13: 0000000000000d68 R14: 00007fd7ff197780 R15: 0000000000000d68
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:freelist_dereference mm/slub.c:347 [inline]
RIP: 0010:get_freepointer mm/slub.c:354 [inline]
RIP: 0010:get_freepointer_safe mm/slub.c:368 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:3211 [inline]
RIP: 0010:__kmalloc_node+0x1dd/0x360 mm/slub.c:4468
Code: 48 83 c4 18 44 89 e1 4c 89 ea 5b 4c 89 fe 48 89 ef 5d 41 5c 41 5d 41 5e 41 5f e9 6e 55 00 00 48 8b 7d 00 8b 4d 28 40 f6 c7 0f <48> 8b 1c 08 0f 85 3d 01 00 00 48 8d 4a 08 65 48 0f c7 0f 0f 94 c0
RSP: 0018:ffffc900004e7c20 EFLAGS: 00010246
RAX: ffff0fff00000000 RBX: 0000000000400cc0 RCX: 0000000000000800
RDX: 0000000000000041 RSI: 0000000000400cc0 RDI: 000000000003b880
RBP: ffff88810004c280 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000400cc0
R13: 0000000000001000 R14: 0000000000000000 R15: ffffffff81632b1e
FS: 00007fd7fef3f800(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7ff039410 CR3: 000000010f2f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 83 c4 18 add $0x18,%rsp
4: 44 89 e1 mov %r12d,%ecx
7: 4c 89 ea mov %r13,%rdx
a: 5b pop %rbx
b: 4c 89 fe mov %r15,%rsi
e: 48 89 ef mov %rbp,%rdi
11: 5d pop %rbp
12: 41 5c pop %r12
14: 41 5d pop %r13
16: 41 5e pop %r14
18: 41 5f pop %r15
1a: e9 6e 55 00 00 jmpq 0x558d
1f: 48 8b 7d 00 mov 0x0(%rbp),%rdi
23: 8b 4d 28 mov 0x28(%rbp),%ecx
26: 40 f6 c7 0f test $0xf,%dil
* 2a: 48 8b 1c 08 mov (%rax,%rcx,1),%rbx <-- trapping instruction
2e: 0f 85 3d 01 00 00 jne 0x171
34: 48 8d 4a 08 lea 0x8(%rdx),%rcx
38: 65 48 0f c7 0f cmpxchg16b %gs:(%rdi)
3d: 0f 94 c0 sete %al
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
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