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Message-ID: <0000000000004ef49705e6da5557@google.com>
Date: Mon, 22 Aug 2022 13:31:32 -0700
From: syzbot <syzbot+27fb2fab2e8cd029d352@...kaller.appspotmail.com>
To: brauner@...nel.org, ebiederm@...ssion.com, keescook@...omium.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
oleg@...hat.com, syzkaller-bugs@...glegroups.com,
tglx@...utronix.de
Subject: [syzbot] usb-testing boot error: BUG: unable to handle kernel paging
request in put_prev_entity
Hello,
syzbot found the following issue on:
HEAD commit: ad57410d231d usb: gadget: rndis: use %u instead of %d to p..
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=15f8653d080000
kernel config: https://syzkaller.appspot.com/x/.config?x=3cb39b084894e9a5
dashboard link: https://syzkaller.appspot.com/bug?extid=27fb2fab2e8cd029d352
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+27fb2fab2e8cd029d352@...kaller.appspotmail.com
BUG: unable to handle page fault for address: ffffdc0000000001
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 100026067 P4D 100026067 PUD 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 251 Comm: kworker/u4:2 Not tainted 6.0.0-rc1-syzkaller-00005-gad57410d231d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:__rb_insert lib/rbtree.c:115 [inline]
RIP: 0010:rb_insert_color+0x6d/0x7a0 lib/rbtree.c:436
Code: 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 48 05 00 00 48 8b 2b 40 f6 c5 01 0f 85 81 01 00 00 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 01 05 00 00 4c 8b 75 08 49 39 de 0f 84 6d 01
RSP: 0000:ffffc9000157fc10 EFLAGS: 00010802
RAX: 1fffe00000000001 RBX: ffff88810e6e0090 RCX: 1ffff11021cb53a4
RDX: 1ffff11021cb53a2 RSI: ffff8881f6937bf0 RDI: ffff000000000008
RBP: ffff000000000000 R08: ffff88810e5a9d10 R09: ffff8881f6937bc0
R10: ffffffff89ca5057 R11: 0000000000000001 R12: ffff88810e5a9d10
R13: dffffc0000000000 R14: dffffc0000000000 R15: 000000003aefdc00
FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffdc0000000001 CR3: 0000000007825000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
rb_insert_color_cached include/linux/rbtree.h:114 [inline]
rb_add_cached include/linux/rbtree.h:183 [inline]
__enqueue_entity kernel/sched/fair.c:629 [inline]
put_prev_entity+0x1d4/0x4c0 kernel/sched/fair.c:4722
pick_next_task_fair+0xa42/0xf80 kernel/sched/fair.c:7443
__pick_next_task kernel/sched/core.c:5804 [inline]
pick_next_task kernel/sched/core.c:6313 [inline]
__schedule+0x3a3/0x26f0 kernel/sched/core.c:6458
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6663
__cond_resched+0x13/0x20 kernel/sched/core.c:8299
might_resched include/linux/kernel.h:110 [inline]
percpu_down_read include/linux/percpu-rwsem.h:49 [inline]
cgroup_threadgroup_change_begin include/linux/cgroup-defs.h:740 [inline]
exit_signals+0x26/0x8b0 kernel/signal.c:2949
do_exit+0x50d/0x2930 kernel/exit.c:751
call_usermodehelper_exec_async+0x418/0x580 kernel/umh.c:125
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
Modules linked in:
CR2: ffffdc0000000001
---[ end trace 0000000000000000 ]---
RIP: 0010:__rb_insert lib/rbtree.c:115 [inline]
RIP: 0010:rb_insert_color+0x6d/0x7a0 lib/rbtree.c:436
Code: 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 48 05 00 00 48 8b 2b 40 f6 c5 01 0f 85 81 01 00 00 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 01 05 00 00 4c 8b 75 08 49 39 de 0f 84 6d 01
RSP: 0000:ffffc9000157fc10 EFLAGS: 00010802
RAX: 1fffe00000000001 RBX: ffff88810e6e0090 RCX: 1ffff11021cb53a4
RDX: 1ffff11021cb53a2 RSI: ffff8881f6937bf0 RDI: ffff000000000008
RBP: ffff000000000000 R08: ffff88810e5a9d10 R09: ffff8881f6937bc0
R10: ffffffff89ca5057 R11: 0000000000000001 R12: ffff88810e5a9d10
R13: dffffc0000000000 R14: dffffc0000000000 R15: 000000003aefdc00
FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffdc0000000001 CR3: 0000000007825000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 89 d8 mov %rbx,%rax
3: 48 c1 e8 03 shr $0x3,%rax
7: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
c: 0f 85 48 05 00 00 jne 0x55a
12: 48 8b 2b mov (%rbx),%rbp
15: 40 f6 c5 01 test $0x1,%bpl
19: 0f 85 81 01 00 00 jne 0x1a0
1f: 48 8d 7d 08 lea 0x8(%rbp),%rdi
23: 48 89 f8 mov %rdi,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 0f 85 01 05 00 00 jne 0x536
35: 4c 8b 75 08 mov 0x8(%rbp),%r14
39: 49 39 de cmp %rbx,%r14
3c: 0f .byte 0xf
3d: 84 6d 01 test %ch,0x1(%rbp)
---
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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