Hello,
kernel test robot noticed "BUG:unable_to_handle_page_fault_for_address" on:
commit: ba13210a07cb255812dff0e660a6978923724b0d ("x86/kvm: Do not try to disable kvmclock if it was not enabled")
https://github.com/intel/tdx.git guest-kexec
in testcase: rcutorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
torture_type: tasks
compiler: gcc-12
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202309111410.32547f17-oliver.sang@xxxxxxxxx
[ 183.786472][ T21] BUG: unable to handle page fault for address: ffffffff85f6e650
[ 183.786929][ T21] #PF: supervisor read access in kernel mode
[ 183.787244][ T21] #PF: error_code(0x0000) - not-present page
[ 183.787556][ T21] PGD 4492067 P4D 4492067 PUD 4493063 PMD 800ffffffa1ff062
[ 183.787959][ T21] Oops: 0000 [#1] SMP KASAN PTI
[ 183.788216][ T21] CPU: 1 PID: 21 Comm: cpuhp/1 Tainted: G W 6.5.0-00004-gba13210a07cb #1
[ 183.788723][ T21] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 183.789263][ T21] RIP: 0010:kvmclock_disable (arch/x86/kernel/kvmclock.c:198 (discriminator 1))
[ 183.789557][ T21] Code: 00 b8 01 00 00 00 5b 31 d2 31 ff c3 cc cc cc cc e8 58 a2 78 00 eb cb 66 0f 1f 44 00 00 48 83 ec 08 e8 67 ec ff ff 84 c0 74 0a <8b> 05 2d ee e2 04 85 c0 75 13 48 83 c4 08 31 c0 31 d2 31 c9 31 f6
All code
========
0: 00 b8 01 00 00 00 add %bh,0x1(%rax)
6: 5b pop %rbx
7: 31 d2 xor %edx,%edx
9: 31 ff xor %edi,%edi
b: c3 retq
c: cc int3
d: cc int3
e: cc int3
f: cc int3
10: e8 58 a2 78 00 callq 0x78a26d
15: eb cb jmp 0xffffffffffffffe2
17: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
1d: 48 83 ec 08 sub $0x8,%rsp
21: e8 67 ec ff ff callq 0xffffffffffffec8d
26: 84 c0 test %al,%al
28: 74 0a je 0x34
2a:* 8b 05 2d ee e2 04 mov 0x4e2ee2d(%rip),%eax # 0x4e2ee5d <-- trapping instruction
30: 85 c0 test %eax,%eax
32: 75 13 jne 0x47
34: 48 83 c4 08 add $0x8,%rsp
38: 31 c0 xor %eax,%eax
3a: 31 d2 xor %edx,%edx
3c: 31 c9 xor %ecx,%ecx
3e: 31 f6 xor %esi,%esi
Code starting with the faulting instruction
===========================================
0: 8b 05 2d ee e2 04 mov 0x4e2ee2d(%rip),%eax # 0x4e2ee33
6: 85 c0 test %eax,%eax
8: 75 13 jne 0x1d
a: 48 83 c4 08 add $0x8,%rsp
e: 31 c0 xor %eax,%eax
10: 31 d2 xor %edx,%edx
12: 31 c9 xor %ecx,%ecx
14: 31 f6 xor %esi,%esi
[ 183.790582][ T21] RSP: 0018:ffffc9000016fd90 EFLAGS: 00210002
[ 183.790903][ T21] RAX: 0000000040000001 RBX: 0000000000000001 RCX: 0000000000000000
[ 183.791318][ T21] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 183.791731][ T21] RBP: ffff8883aee27300 R08: 0000000000000000 R09: 0000000000000000
[ 183.792143][ T21] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 183.792556][ T21] R13: ffffffff84550898 R14: ffff8883aee27328 R15: ffffffff84550888
[ 183.792970][ T21] FS: 0000000000000000(0000) GS:ffff8883aee00000(0000) knlGS:0000000000000000
[ 183.793435][ T21] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 183.793785][ T21] CR2: ffffffff85f6e650 CR3: 000000012e91c000 CR4: 00000000000406a0
[ 183.794240][ T21] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 183.794652][ T21] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 183.795063][ T21] Call Trace:
[ 183.795239][ T21] <TASK>
[ 183.795394][ T21] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434)
[ 183.795603][ T21] ? page_fault_oops (arch/x86/mm/fault.c:707)
[ 183.795864][ T21] ? show_fault_oops (arch/x86/mm/fault.c:635)
[ 183.796124][ T21] ? kernelmode_fixup_or_oops (arch/x86/mm/fault.c:758)
[ 183.796421][ T21] ? exc_page_fault (arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1542)
[ 183.796670][ T21] ? asm_exc_page_fault (arch/x86/include/asm/idtentry.h:570)
[ 183.796938][ T21] ? kvmclock_disable (arch/x86/kernel/kvmclock.c:198 (discriminator 1))
[ 183.797193][ T21] kvm_cpu_down_prepare (arch/x86/kernel/kvm.c:714 (discriminator 1))
[ 183.797461][ T21] cpuhp_invoke_callback (include/linux/jump_label.h:270 include/trace/events/cpuhp.h:65 kernel/cpu.c:196)
[ 183.797746][ T21] ? io_schedule_timeout (kernel/sched/core.c:6592)
[ 183.798036][ T21] ? cpuhp_thread_fun (kernel/cpu.c:109 kernel/cpu.c:1094)
[ 183.798303][ T21] cpuhp_thread_fun (kernel/cpu.c:1080)
[ 183.798561][ T21] ? __cpuhp_state_remove_instance (kernel/cpu.c:1037)
[ 183.798884][ T21] ? smpboot_thread_fn (kernel/smpboot.c:112)
[ 183.799152][ T21] ? smpboot_thread_fn (kernel/smpboot.c:112)
[ 183.799416][ T21] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 4))
[ 183.799678][ T21] ? sort_range (kernel/smpboot.c:109)
[ 183.799906][ T21] kthread (kernel/kthread.c:389)
[ 183.800123][ T21] ? kthread_complete_and_exit (kernel/kthread.c:346)
[ 183.800418][ T21] ret_from_fork (arch/x86/kernel/process.c:151)
[ 183.800664][ T21] ? kthread_complete_and_exit (kernel/kthread.c:346)
[ 183.800959][ T21] ret_from_fork_asm (arch/x86/entry/entry_64.S:312)
[ 183.801216][ T21] </TASK>
[ 183.801379][ T21] Modules linked in: rcutorture torture ppdev crc32_pclmul polyval_clmulni input_leds led_class aesni_intel rtc_cmos parport_pc drm drm_panel_orientation_quirks
[ 183.802235][ T21] CR2: ffffffff85f6e650
[ 183.802457][ T21] ---[ end trace 0000000000000000 ]---
[ 183.802741][ T21] RIP: 0010:kvmclock_disable (arch/x86/kernel/kvmclock.c:198 (discriminator 1))
[ 183.803026][ T21] Code: 00 b8 01 00 00 00 5b 31 d2 31 ff c3 cc cc cc cc e8 58 a2 78 00 eb cb 66 0f 1f 44 00 00 48 83 ec 08 e8 67 ec ff ff 84 c0 74 0a <8b> 05 2d ee e2 04 85 c0 75 13 48 83 c4 08 31 c0 31 d2 31 c9 31 f6
All code
========
0: 00 b8 01 00 00 00 add %bh,0x1(%rax)
6: 5b pop %rbx
7: 31 d2 xor %edx,%edx
9: 31 ff xor %edi,%edi
b: c3 retq
c: cc int3
d: cc int3
e: cc int3
f: cc int3
10: e8 58 a2 78 00 callq 0x78a26d
15: eb cb jmp 0xffffffffffffffe2
17: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
1d: 48 83 ec 08 sub $0x8,%rsp
21: e8 67 ec ff ff callq 0xffffffffffffec8d
26: 84 c0 test %al,%al
28: 74 0a je 0x34
2a:* 8b 05 2d ee e2 04 mov 0x4e2ee2d(%rip),%eax # 0x4e2ee5d <-- trapping instruction
30: 85 c0 test %eax,%eax
32: 75 13 jne 0x47
34: 48 83 c4 08 add $0x8,%rsp
38: 31 c0 xor %eax,%eax
3a: 31 d2 xor %edx,%edx
3c: 31 c9 xor %ecx,%ecx
3e: 31 f6 xor %esi,%esi
Code starting with the faulting instruction
===========================================
0: 8b 05 2d ee e2 04 mov 0x4e2ee2d(%rip),%eax # 0x4e2ee33
6: 85 c0 test %eax,%eax
8: 75 13 jne 0x1d
a: 48 83 c4 08 add $0x8,%rsp
e: 31 c0 xor %eax,%eax
10: 31 d2 xor %edx,%edx
12: 31 c9 xor %ecx,%ecx
14: 31 f6 xor %esi,%esi
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20230911/202309111410.32547f17-oliver.sang@xxxxxxxxx
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
