linux-kernel - [dyndbg] 27b0e04e3f: dmesg.kernel_BUG_at

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Date:   Wed, 20 Apr 2022 16:11:06 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Jim Cromie <jim.cromie@...il.com>
Cc:     Jim Cromie <jim.cromie@...il.com>, lkp@...ts.01.org, lkp@...el.com,
        LKML <linux-kernel@...r.kernel.org>
Subject: [dyndbg]  27b0e04e3f: dmesg.kernel_BUG_at_arch/x86/mm/physaddr.c



Greeting,

FYI, we noticed the following commit (built with clang-15):

commit: 27b0e04e3fb1541c77eb12f16f0084a2ec558c35 ("dyndbg: dynamic_debug_sites_reclaim() using free_reserved_page()")
https://github.com/jimc/linux.git dd-diet-7a

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):



If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>



[   53.360916][    T1] ------------[ cut here ]------------
[   53.361641][    T1] kernel BUG at arch/x86/mm/physaddr.c:28!
[   53.362391][    T1] invalid opcode: 0000 [#1] SMP PTI
[   53.363213][    T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.17.0-00044-g27b0e04e3fb1 #1 aed7d804852ef29397be41233358c78c59f5d310
[   53.364895][    T1] RIP: 0010:__phys_addr+0xde/0xf0
[   53.366115][    T1] Code: c3 48 c7 c7 00 32 cc 8e 4c 89 fe 4c 89 f2 e8 e9 65 d5 00 eb b4 48 c7 c7 80 d6 2a 8f be 01 00 00 00 31 d2 31 c9 e8 72 87 23 00 <
0f> 0b 0f 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb
[   53.368493][    T1] RSP: 0000:ffffc90000013cc8 EFLAGS: 00010246
[   53.369279][    T1] RAX: 0000000000000000 RBX: 0000000080001000 RCX: 0000000000000000
[   53.370345][    T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   53.371414][    T1] RBP: ffffc90000013eb8 R08: 0001ffff8f2ad6a7 R09: 0000000000000000
[   53.372440][    T1] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8f29d000
[   53.373484][    T1] R13: ffffea0000000000 R14: 0000000000001000 R15: 0000778000001000
[   53.374550][    T1] FS:  0000000000000000(0000) GS:ffff88843fc00000(0000) knlGS:0000000000000000
[   53.375732][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.376601][    T1] CR2: 0000000000000000 CR3: 000000025ba6a000 CR4: 00000000000406e0
[   53.377717][    T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   53.378759][    T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   53.379936][    T1] Call Trace:
[   53.380383][    T1]  <TASK>
[   53.380821][    T1]  dynamic_debug_sites_reclaim+0x8f/0x315
[   53.381582][    T1]  ? dynamic_debug_init+0x42d/0x42d
[   53.382302][    T1]  do_one_initcall+0x201/0x520
[   53.383025][    T1]  ? rcu_read_lock_sched_held+0x34/0xa0
[   53.383745][    T1]  do_initcall_level+0xaf/0x182
[   53.384450][    T1]  do_initcalls+0x5c/0x8c
[   53.385045][    T1]  do_basic_setup+0x35/0x3b
[   53.385704][    T1]  kernel_init_freeable+0x10d/0x163
[   53.386466][    T1]  ? rest_init+0x280/0x280
[   53.387079][    T1]  kernel_init+0x12/0x1e0
[   53.387695][    T1]  ? rest_init+0x280/0x280
[   53.388286][    T1]  ret_from_fork+0x1f/0x30
[   53.388872][    T1]  </TASK>
[   53.389348][    T1] Modules linked in:
[   53.390046][    T1] ---[ end trace 0000000000000000 ]---
[   53.390770][    T1] RIP: 0010:__phys_addr+0xde/0xf0
[   53.391413][    T1] Code: c3 48 c7 c7 00 32 cc 8e 4c 89 fe 4c 89 f2 e8 e9 65 d5 00 eb b4 48 c7 c7 80 d6 2a 8f be 01 00 00 00 31 d2 31 c9 e8 72 87 23 00 <0f> 0b 0f 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb
[   53.395922][    T1] RSP: 0000:ffffc90000013cc8 EFLAGS: 00010246
[   53.396757][    T1] RAX: 0000000000000000 RBX: 0000000080001000 RCX: 0000000000000000
[   53.397771][    T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   53.398757][    T1] RBP: ffffc90000013eb8 R08: 0001ffff8f2ad6a7 R09: 0000000000000000
[   53.399739][    T1] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8f29d000
[   53.400762][    T1] R13: ffffea0000000000 R14: 0000000000001000 R15: 0000778000001000
[   53.401825][    T1] FS:  0000000000000000(0000) GS:ffff88843fc00000(0000) knlGS:0000000000000000
[   53.403041][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.403916][    T1] CR2: 0000000000000000 CR3: 000000025ba6a000 CR4: 00000000000406e0
[   53.404916][    T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   53.405927][    T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   53.406950][    T1] Kernel panic - not syncing: Fatal exception
[   53.407790][    T1] Kernel Offset: disabled



To reproduce:

        # build kernel
	cd linux
	cp config-5.17.0-00044-g27b0e04e3fb1 .config
	make HOSTCC=clang-15 CC=clang-15 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=clang-15 CC=clang-15 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



View attachment "config-5.17.0-00044-g27b0e04e3fb1" of type "text/plain" (134023 bytes)

View attachment "job-script" of type "text/plain" (4708 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (18260 bytes)