When we use 'help bt' command, the instruction of 'bt' is printed as below.
crash> help bt
NAME
bt - backtrace
...
crash> bf -FF
...
#4 [ffff810072b47f10] vfs_write at ffffffff800789d8
ffff810072b47f18: [ffff81007e020380:files_cache] [ffff81007e2c2880:filp]
ffff810072b47f28: 0000000000000002 fffffffffffffff7
ffff810072b47f38: 00002b141825d000 sys_write+69
#5 [ffff810072b47f40] sys_write at ffffffff80078f75
But it seems that 'bf -FF' shows misleading information
because invalid output is displayed using 'bf -FF' command as below.
crash> bf -FF 1
crash: command not found: bf
But 'bt -FF 1' shows valid output.
crash> bt -FF 1
PID: 1 TASK: cf932d40 CPU: 0 COMMAND: "systemd"
#0 [<c0c1609c>] (__schedule) from [<c0c162c0>]
[PC: c0c1609c LR: c0c162c0 SP: cf92fe18 SIZE: 72]
cf92fe18: 40060093 _end+238341700 _end+239562316 trace_buffer_unlock_commit_regs+280
cf92fe28: 001c754b schedule+132 schedule+124 00000004
cf92fe38: 001c754b 00000000 __stack_chk_guard 00000000
cf92fe48: 00000000 80060013 _end+239554564 00000000
cf92fe58: _end+239562340 schedule+132
#1 [<c0c162c0>] (schedule) from [<c0c1ab5c>]
[PC: c0c162c0 LR: c0c1ab5c SP: cf92fe60 SIZE: 8]
cf92fe60: _end+239562452 schedule_hrtimeout_range_clock+300
So fix typo for 'bf -FF' command as below to avoid confusion.
Signed-off-by: Austin Kim <austindh.kim@xxxxxxxxx>
---
help.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/help.c b/help.c
index 2b2285b..934d8bc 100644
--- a/help.c
+++ b/help.c
@@ -2133,7 +2133,7 @@ char *help_bt[] = {
" ffff810072b47f38: 00002b141825d000 sys_write+69 ",
" #5 [ffff810072b47f40] sys_write at ffffffff80078f75",
" ...",
-" %s> bf -FF",
+" %s> bt -FF",
" ...",
" #4 [ffff810072b47f10] vfs_write at ffffffff800789d8",
" ffff810072b47f18: [ffff81007e020380:files_cache] [ffff81007e2c2880:filp]",
--
2.6.2
--
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