mirror of https://github.com/torvalds/linux.git
5854e4d853
When using the frame pointer unwinder, it was found that the stack trace output of stack_trace_save() is incomplete if the stack contains call_with_stack(): [0x7f00002c] dump_stack_task+0x2c/0x90 [hrtimer] [0x7f0000a0] hrtimer_hander+0x10/0x18 [hrtimer] [0x801a67f0] __hrtimer_run_queues+0x1b0/0x3b4 [0x801a7350] hrtimer_run_queues+0xc4/0xd8 [0x801a597c] update_process_times+0x3c/0x88 [0x801b5a98] tick_periodic+0x50/0xd8 [0x801b5bf4] tick_handle_periodic+0x24/0x84 [0x8010ffc4] twd_handler+0x38/0x48 [0x8017d220] handle_percpu_devid_irq+0xa8/0x244 [0x80176e9c] generic_handle_domain_irq+0x2c/0x3c [0x8052e3a8] gic_handle_irq+0x7c/0x90 [0x808ab15c] generic_handle_arch_irq+0x60/0x80 [0x8051191c] call_with_stack+0x1c/0x20 For the frame pointer unwinder, unwind_frame() checks stackframe::fp by stackframe::sp. Since call_with_stack() switches the SP from one stack to another, stackframe::fp and stackframe: :sp will point to different stacks, so we can no longer check stackframe::fp by stackframe::sp. Skip checking stackframe::fp at this point to avoid this problem. Signed-off-by: Li Huafei <lihuafei1@huawei.com> Reviewed-by: Linus Waleij <linus.walleij@linaro.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> |
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| .. | ||
| Makefile | ||
| ashldi3.S | ||
| ashrdi3.S | ||
| backtrace-clang.S | ||
| backtrace.S | ||
| bitops.h | ||
| bswapsdi2.S | ||
| call_with_stack.S | ||
| changebit.S | ||
| clear_user.S | ||
| clearbit.S | ||
| copy_from_user.S | ||
| copy_page.S | ||
| copy_template.S | ||
| copy_to_user.S | ||
| csumipv6.S | ||
| csumpartial.S | ||
| csumpartialcopy.S | ||
| csumpartialcopygeneric.S | ||
| csumpartialcopyuser.S | ||
| delay-loop.S | ||
| delay.c | ||
| div64.S | ||
| findbit.S | ||
| getuser.S | ||
| io-readsb.S | ||
| io-readsl.S | ||
| io-readsw-armv3.S | ||
| io-readsw-armv4.S | ||
| io-writesb.S | ||
| io-writesl.S | ||
| io-writesw-armv3.S | ||
| io-writesw-armv4.S | ||
| lib1funcs.S | ||
| lshrdi3.S | ||
| memchr.S | ||
| memcpy.S | ||
| memmove.S | ||
| memset.S | ||
| muldi3.S | ||
| putuser.S | ||
| setbit.S | ||
| strchr.S | ||
| strrchr.S | ||
| testchangebit.S | ||
| testclearbit.S | ||
| testsetbit.S | ||
| uaccess_with_memcpy.c | ||
| ucmpdi2.S | ||
| xor-neon.c | ||