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Message-ID: <CA+G9fYuahjaNs6ia1UOeF98hUhonAt0Z4YOFGcqOKt3J4tRvTw@mail.gmail.com>
Date: Fri, 13 Jan 2023 21:14:15 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: Matthew Wilcox <willy@...radead.org>
Cc: open list <linux-kernel@...r.kernel.org>,
Linux-Next Mailing List <linux-next@...r.kernel.org>,
lkft-triage@...ts.linaro.org, regressions@...ts.linux.dev,
Kefeng Wang <wangkefeng.wang@...wei.com>,
Mark Brown <broonie@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Arnd Bergmann <arnd@...db.de>,
Anders Roxell <anders.roxell@...aro.org>
Subject: Re: next: BUG: kernel NULL pointer dereference, address:
0000000000000008 - RIP: 0010:do_wp_page
Hi Matthew,
On Fri, 13 Jan 2023 at 19:32, Matthew Wilcox <willy@...radead.org> wrote:
>
> On Fri, Jan 13, 2023 at 06:53:01PM +0530, Naresh Kamboju wrote:
> > Linux next tag 20230113 boot failed on x86_64, arm64, arm and i386.
>
> Why are you still not running these stack dumps through
> scripts/decode_stacktrace.sh ? That seems like it's much easier for you
> to do than expecting everybody who might be interested in investigating
> your reports to pull down enough of the build artifacts to make it work.
Hope this will help you.
# ./scripts/decode_stacktrace.sh vmlinux < input.txt > output.txt
stack dumps:
------------------
[ 15.945626] BUG: kernel NULL pointer dereference, address: 0000000000000008
[ 15.952588] #PF: supervisor read access in kernel mode
[ 15.957720] #PF: error_code(0x0000) - not-present page
[ 15.962850] PGD 8000000103213067 P4D 8000000103213067 PUD 103212067 PMD 0
[ 15.969724] Oops: 0000 [#1] PREEMPT SMP PTI
[ 15.973909] CPU: 3 PID: 1 Comm: init Not tainted 6.2.0-rc3-next-20230113 #1
[ 15.980869] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 15.988336] RIP: 0010:do_wp_page (memory.c:?)
[ 15.992611] Code: 83 ea 01 49 89 d7 48 85 d2 0f 85 00 ff ff ff 49 8b
7c 24 60 e8 0b f2 e9 00 41 8b 44 24 28 4d 8b 74 24 50 4d 8b 2c 24 89
45 88 <49> 8b 46 08 49 8b 5d 10 a8 01 0f 85 78 02 00 00 0f 1f 44 00 00
4c
All code
========
0: 83 ea 01 sub $0x1,%edx
3: 49 89 d7 mov %rdx,%r15
6: 48 85 d2 test %rdx,%rdx
9: 0f 85 00 ff ff ff jne 0xffffffffffffff0f
f: 49 8b 7c 24 60 mov 0x60(%r12),%rdi
14: e8 0b f2 e9 00 callq 0xe9f224
19: 41 8b 44 24 28 mov 0x28(%r12),%eax
1e: 4d 8b 74 24 50 mov 0x50(%r12),%r14
23: 4d 8b 2c 24 mov (%r12),%r13
27: 89 45 88 mov %eax,-0x78(%rbp)
2a:* 49 8b 46 08 mov 0x8(%r14),%rax <-- trapping instruction
2e: 49 8b 5d 10 mov 0x10(%r13),%rbx
32: a8 01 test $0x1,%al
34: 0f 85 78 02 00 00 jne 0x2b2
3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
3f: 4c rex.WR
Code starting with the faulting instruction
===========================================
0: 49 8b 46 08 mov 0x8(%r14),%rax
4: 49 8b 5d 10 mov 0x10(%r13),%rbx
8: a8 01 test $0x1,%al
a: 0f 85 78 02 00 00 jne 0x288
10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
15: 4c rex.WR
[ 16.011356] RSP: 0000:ffffb3f640027d18 EFLAGS: 00010286
[ 16.016583] RAX: 0000000000000a55 RBX: 0400000000000080 RCX: 0000000000000000
[ 16.023715] RDX: 0000000000000000 RSI: ffffffff8d3d2bd5 RDI: ffffffff8e271dfa
[ 16.030838] RBP: ffffb3f640027db0 R08: 8000000432ee9225 R09: ffff8ac3431e3100
[ 16.037962] R10: 0000000000000000 R11: 00007fe169f2f598 R12: ffffb3f640027de0
[ 16.045087] R13: ffff8ac3431e2000 R14: 0000000000000000 R15: 0400000000000000
[ 16.052211] FS: 00007fe16973e800(0000) GS:ffff8ac69fd80000(0000)
knlGS:0000000000000000
[ 16.060319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 16.066060] CR2: 0000000000000008 CR3: 00000001008d4002 CR4: 00000000003706e0
[ 16.073183] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 16.080322] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 16.087446] Call Trace:
[ 16.089893] <TASK>
[ 16.091991] ? trace_preempt_off (??:?)
[ 16.096087] ? __handle_mm_fault (memory.c:?)
[ 16.100439] __handle_mm_fault (memory.c:?)
[ 16.104617] handle_mm_fault (??:?)
[ 16.108457] do_user_addr_fault (fault.c:?)
[ 16.112642] exc_page_fault (??:?)
[ 16.116394] asm_exc_page_fault (??:?)
[ 16.120408] RIP: 0033:0x7fe169dbf31e
[ 16.123986] Code: ba ff ff ff ff 0f 9f c0 0f b6 c0 0f 4c c2 c3 66 2e
0f 1f 84 00 00 00 00 00 0f 1f 00 41 54 31 c0 ba ff ff ff ff 53 48 83
ec 08 <f0> 0f b1 15 72 02 17 00 83 f8 ff 74 35 41 89 c4 85 c0 75 21 31
c0
All code
========
0: ba ff ff ff ff mov $0xffffffff,%edx
5: 0f 9f c0 setg %al
8: 0f b6 c0 movzbl %al,%eax
b: 0f 4c c2 cmovl %edx,%eax
e: c3 retq
f: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
16: 00 00 00
19: 0f 1f 00 nopl (%rax)
1c: 41 54 push %r12
1e: 31 c0 xor %eax,%eax
20: ba ff ff ff ff mov $0xffffffff,%edx
25: 53 push %rbx
26: 48 83 ec 08 sub $0x8,%rsp
2a:* f0 0f b1 15 72 02 17 lock cmpxchg %edx,0x170272(%rip) #
0x1702a4 <-- trapping instruction
31: 00
32: 83 f8 ff cmp $0xffffffff,%eax
35: 74 35 je 0x6c
37: 41 89 c4 mov %eax,%r12d
3a: 85 c0 test %eax,%eax
3c: 75 21 jne 0x5f
3e: 31 c0 xor %eax,%eax
Code starting with the faulting instruction
===========================================
0: f0 0f b1 15 72 02 17 lock cmpxchg %edx,0x170272(%rip) # 0x17027a
7: 00
8: 83 f8 ff cmp $0xffffffff,%eax
b: 74 35 je 0x42
d: 41 89 c4 mov %eax,%r12d
10: 85 c0 test %eax,%eax
12: 75 21 jne 0x35
14: 31 c0 xor %eax,%eax
[ 16.142724] RSP: 002b:00007ffcd0edec80 EFLAGS: 00010202
[ 16.147948] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000555bd8
[ 16.155074] RDX: 00000000ffffffff RSI: 00007ffcd0edefa8 RDI: 0000000000000001
[ 16.162198] RBP: 00007ffcd0edefa8 R08: 00007fe169bc5a10 R09: 00007fe169f37a10
[ 16.169319] R10: 00007fe169adf3ee R11: 0000000000000246 R12: 00007ffcd0edefa8
[ 16.176445] R13: 000000000041b9a0 R14: 0000000000555bd8 R15: 00007fe169f69000
[ 16.183569] </TASK>
[ 16.185752] Modules linked in:
[ 16.188803] CR2: 0000000000000008
[ 16.192114] ---[ end trace 0000000000000000 ]---
ref:
https://lore.kernel.org/linux-next/CA+G9fYt_b04YNCCv-iTZTtwb5fmNEQ0abiO46qW_-SrA1GQX8w@mail.gmail.com/
- Naresh
View attachment "output.txt" of type "text/plain" (5394 bytes)
View attachment "input.txt" of type "text/plain" (2846 bytes)
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