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Groups > linux.kernel > #1216002
| From | Chuck Ebbert <cebbert.lkml@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler |
| Date | 2015-08-31 04:40 +0200 |
| Message-ID | <q3naN-2LJ-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
This is from https://bugzilla.redhat.com/show_bug.cgi?id=1258223 [ 0.036000] BUG: unable to handle kernel paging request at 55501e06 [ 0.036000] IP: [<c0aae48b>] common_interrupt+0xb/0x38 [ 0.036000] *pde = 00000000 [ 0.036000] Oops: 0000 [#1] SMP [ 0.036000] Modules linked in: [ 0.036000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.2.0-0.rc8.git3.1.fc24.i686 #1 [ 0.036000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.2-20150714_191134- 04/01/2014 [ 0.036000] task: c0d49ac0 ti: c0d42000 task.ti: c0d42000 [ 0.036000] EIP: 0060:[<c0aae48b>] EFLAGS: 00200046 CPU: 0 [ 0.036000] EIP is at common_interrupt+0xb/0x38 [ 0.036000] EAX: c0aae480 EBX: 0000008d ECX: c0ab1c83 EDX: e4af6810 [ 0.036000] ESI: 029a7802 EDI: 00000003 EBP: c0d43e68 ESP: c0d43e44 [ 0.036000] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 0.036000] CR0: 8005003b CR2: 55501e06 CR3: 00ebd000 CR4: 00000690 [ 0.036000] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 0.036000] DR6: 00000000 DR7: 00000000 [ 0.036000] Stack: [ 0.036000] 0000004f c0409c80 00000060 00200202 00200046 c0d43e60 c0ea150c 029a7802 [ 0.036000] 00000000 c0d43fb8 c040a054 c07f1cf0 6c0a1000 ffff0006 00200046 00000043 [ 0.036000] c0ed0bc0 00000000 c0d43e98 c071a6fc c0d43ea8 c0d43ec4 c0ea4c73 c0ea4c7f [ 0.036000] Call Trace: [ 0.036000] [<c0409c80>] ? add_nops+0x90/0xa0 [ 0.036000] [<c040a054>] apply_alternatives+0x274/0x630 [ 0.036000] [<c07f1cf0>] ? wait_for_xmitr+0xa0/0xa0 [ 0.036000] [<c071a6fc>] ? sprintf+0x1c/0x20 [ 0.036000] [<c0aae480>] ? irq_entries_start+0x698/0x698 [ 0.036000] [<c071be4b>] ? memcpy+0xb/0x30 [ 0.036000] [<c07f3950>] ? serial8250_set_termios+0x20/0x20 [ 0.036000] [<c0aad4e3>] ? _raw_write_unlock_irqrestore+0x13/0x20 [ 0.036000] [<c0aad4e3>] ? _raw_write_unlock_irqrestore+0x13/0x20 [ 0.036000] [<c0aad4fd>] ? _raw_spin_unlock_irqrestore+0xd/0x10 [ 0.036000] [<c04b17b9>] ? console_unlock+0x2e9/0x610 [ 0.036000] [<c04b03cd>] ? log_store+0x1cd/0x210 [ 0.036000] [<c04b1d7e>] ? vprintk_emit+0x29e/0x570 [ 0.036000] [<c04b21e1>] ? vprintk_default+0x41/0x60 [ 0.036000] [<c0aa7725>] ? printk+0x17/0x19 [ 0.036000] [<c0dfdd48>] ? identify_boot_cpu+0x7b/0x80 [ 0.036000] [<c0dfca47>] alternative_instructions+0x17/0xc1 [ 0.036000] [<c0dfdda9>] check_bugs+0x32/0x39 [ 0.036000] [<c0df6b57>] start_kernel+0x3ca/0x40a [ 0.036000] [<c0df62e3>] i386_start_kernel+0x91/0x95 [ 0.036000] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 8d 90 90 83 04 24 80 fc 0f a8 0f <a0> 06 1e 50 55 57 56 52 51 53 ba 7b 00 00 00 8e da 8e c2 ba d8 0: 8d 90 90 83 04 24 lea 0x24048390(%eax),%edx 6: 80 fc 0f cmp $0xf,%ah 9: a8 0f test $0xf,%al >> b: a0 06 1e 50 55 mov 0x55501e06,%al 10: 57 push %edi 11: 56 push %esi Interrupt 0x30 occurred while the alternatives code was replacing the initial 0x90,0x90,0x90 NOPs (from the ASM_CLAC macro) with the optimized version, 0x8d,0x76,0x00. Only the first byte has been replaced so far, and it makes a mess out of the insn decoding. I have no clue how to fix this. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Chuck Ebbert <cebbert.lkml@gmail.com> - 2015-08-31 04:40 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-01 08:30 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Thomas Gleixner <tglx@linutronix.de> - 2015-09-02 11:20 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-02 21:10 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-03 10:00 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Borislav Petkov <bp@alien8.de> - 2015-09-03 11:00 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Thomas Gleixner <tglx@linutronix.de> - 2015-09-03 12:50 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Josh Boyer <jwboyer@fedoraproject.org> - 2015-09-03 14:50 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Thomas Gleixner <tglx@linutronix.de> - 2015-09-03 15:10 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-03 18:00 +0200
[tip:x86/urgent] x86/alternatives: Make optimize_nops() interrupt safe and synced tip-bot for Thomas Gleixner <tipbot@zytor.com> - 2015-09-03 21:40 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler "Richard W.M. Jones" <rjones@redhat.com> - 2015-09-04 09:50 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Borislav Petkov <bp@alien8.de> - 2015-09-04 14:10 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Thomas Gleixner <tglx@linutronix.de> - 2015-09-04 15:40 +0200
Re: [BUG 4.2-rc8] Interrupt occurs while apply_alternatives() is patching the handler Borislav Petkov <bp@alien8.de> - 2015-09-05 17:30 +0200
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