08932a1983
Get UML to use the generic bug support rather than arch specific one.
If I insert an artificial bug right before loading init, I get this:
Kernel panic - not syncing: Kernel mode signal 4
EIP: 0023:[<0819d501>] CPU: 0 Not tainted ESP: 002b:f7fd4fbc EFLAGS: 00000246
Not tainted
EAX: 00000000 EBX: 00007870 ECX: 00000013 EDX: 00007870
ESI: 0000786d EDI: 00000011 EBP: f7fd4fd8 DS: 002b ES: 002b
08273bec: [<0806e814>] show_regs+0x104/0x106
08273c08: [<08058927>] panic_exit+0x2c/0x4b
08273c18: [<08080ee7>] notifier_call_chain+0x32/0x5b
08273c38: [<08080fbd>] __atomic_notifier_call_chain+0x30/0x32
08273c54: [<08080fee>] atomic_notifier_call_chain+0x2f/0x31
08273c70: [<08073b88>] panic+0x75/0x131
08273c94: [<080586c7>] relay_signal+0x87/0x95
08273cb0: [<0806b9ee>] sig_handler_common_skas+0x9e/0x120
08273cd8: [<08067738>] sig_handler+0x28/0x4f
08273cec: [<0806792e>] handle_signal+0x53/0x89
08273d0c: [<08069f60>] hard_handler+0x18/0x28
08273d1c: [<ffffe500>] transitions+0xf7d598b8/0xfffffff0
With this patch in place, this is how it looks:
BUG: failure at init/main.c:779/init_post()!
Kernel panic - not syncing: BUG!
EIP: 0023:[<081a65d1>] CPU: 0 Not tainted ESP: 002b:f7f0dfbc EFLAGS: 00000246
Not tainted
EAX: 00000000 EBX: 000069db ECX: 00000013 EDX: 000069db
ESI: 000069d8 EDI: 00000011 EBP: f7f0dfd8 DS: 002b ES: 002b
098efedc: [<0806e9a4>] show_regs+0x104/0x106
098efef8: [<080589c7>] panic_exit+0x2c/0x4b
098eff08: [<080818d7>] notifier_call_chain+0x32/0x5b
098eff28: [<080819ad>] __atomic_notifier_call_chain+0x30/0x32
098eff44: [<080819de>] atomic_notifier_call_chain+0x2f/0x31
098eff60: [<08073f28>] panic+0x75/0x131
098eff84: [<080541d5>] init_post+0xcd/0xe8
098eff9c: [<08048ad4>] kernel_init+0x8e/0x9a
098effb4: [<08066dee>] run_kernel_thread+0x41/0x53
098effe0: [<08058e75>] new_thread_handler+0x62/0x8b
098efffc: [<a55a5a5a>] 0xa55a5a5a
[ jdike - added BUG_TABLE to linker script ]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|---|---|---|
| .. | ||
| a.out.h | ||
| alternative-asm.i | ||
| alternative.h | ||
| apic.h | ||
| archparam-i386.h | ||
| archparam-ppc.h | ||
| archparam-x86_64.h | ||
| atomic.h | ||
| auxvec.h | ||
| bitops.h | ||
| boot.h | ||
| bug.h | ||
| bugs.h | ||
| byteorder.h | ||
| cache.h | ||
| cacheflush.h | ||
| calling.h | ||
| checksum.h | ||
| cmpxchg.h | ||
| cobalt.h | ||
| common.lds.S | ||
| cpufeature.h | ||
| cputime.h | ||
| current.h | ||
| delay.h | ||
| desc.h | ||
| device.h | ||
| div64.h | ||
| dma-mapping.h | ||
| dma.h | ||
| dwarf2.h | ||
| elf-i386.h | ||
| elf-ppc.h | ||
| elf-x86_64.h | ||
| emergency-restart.h | ||
| errno.h | ||
| fcntl.h | ||
| fixmap.h | ||
| floppy.h | ||
| frame.i | ||
| futex.h | ||
| hardirq.h | ||
| highmem.h | ||
| host_ldt-i386.h | ||
| host_ldt-x86_64.h | ||
| hw_irq.h | ||
| ide.h | ||
| io.h | ||
| ioctl.h | ||
| ioctls.h | ||
| ipc.h | ||
| ipcbuf.h | ||
| irq.h | ||
| irq_regs.h | ||
| irq_vectors.h | ||
| irqflags.h | ||
| kdebug.h | ||
| keyboard.h | ||
| kmap_types.h | ||
| ldt.h | ||
| linkage.h | ||
| local.h | ||
| locks.h | ||
| mca_dma.h | ||
| mman.h | ||
| mmu.h | ||
| mmu_context.h | ||
| module-generic.h | ||
| module-i386.h | ||
| module-x86_64.h | ||
| msgbuf.h | ||
| mtrr.h | ||
| mutex.h | ||
| namei.h | ||
| page.h | ||
| page_offset.h | ||
| param.h | ||
| pci.h | ||
| pda.h | ||
| percpu.h | ||
| pgalloc.h | ||
| pgtable-2level.h | ||
| pgtable-3level.h | ||
| pgtable.h | ||
| poll.h | ||
| posix_types.h | ||
| prctl.h | ||
| processor-generic.h | ||
| processor-i386.h | ||
| processor-ppc.h | ||
| processor-x86_64.h | ||
| ptrace-generic.h | ||
| ptrace-i386.h | ||
| ptrace-x86_64.h | ||
| required-features.h | ||
| resource.h | ||
| rwlock.h | ||
| rwsem.h | ||
| scatterlist.h | ||
| sections.h | ||
| segment.h | ||
| semaphore.h | ||
| sembuf.h | ||
| serial.h | ||
| setup.h | ||
| shmbuf.h | ||
| shmparam.h | ||
| sigcontext-generic.h | ||
| sigcontext-i386.h | ||
| sigcontext-ppc.h | ||
| sigcontext-x86_64.h | ||
| siginfo.h | ||
| signal.h | ||
| smp.h | ||
| socket.h | ||
| sockios.h | ||
| spinlock.h | ||
| spinlock_types.h | ||
| stat.h | ||
| statfs.h | ||
| string.h | ||
| suspend.h | ||
| system-generic.h | ||
| system-i386.h | ||
| system-ppc.h | ||
| system-x86_64.h | ||
| termbits.h | ||
| termios.h | ||
| thread_info.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| topology.h | ||
| types.h | ||
| uaccess.h | ||
| ucontext.h | ||
| unaligned.h | ||
| unistd.h | ||
| user.h | ||
| vga.h | ||
| vm-flags-i386.h | ||
| vm-flags-x86_64.h | ||
| vm86.h | ||
| xor.h | ||