The patch titled
Subject: ipmi/watchdog: use nmi_panic() when kernel panics in NMI handler
has been removed from the -mm tree. Its filename was
ipmi-watchdog-use-nmi_panic-when-kernel-panics-in-nmi-handler.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Hidehiro Kawai <hidehiro.kawai.ez@xxxxxxxxxxx>
Subject: ipmi/watchdog: use nmi_panic() when kernel panics in NMI handler
commit 1717f2096b54 ("panic, x86: Fix re-entrance problem due to panic on
NMI") introduced nmi_panic() which prevents concurrent and recursive
execution of panic(). It also saves registers for the crash dump on x86
by later commit 58c5661f2144 ("panic, x86: Allow CPUs to save registers
even if looping in NMI context").
ipmi_watchdog driver can call panic() from NMI handler, so replace it with
nmi_panic().
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@xxxxxxxxxxx>
Acked-by: Corey Minyard <cminyard@xxxxxxxxxx>
Acked-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/ipmi/ipmi_watchdog.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/char/ipmi/ipmi_watchdog.c~ipmi-watchdog-use-nmi_panic-when-kernel-panics-in-nmi-handler drivers/char/ipmi/ipmi_watchdog.c
--- a/drivers/char/ipmi/ipmi_watchdog.c~ipmi-watchdog-use-nmi_panic-when-kernel-panics-in-nmi-handler
+++ a/drivers/char/ipmi/ipmi_watchdog.c
@@ -1140,7 +1140,7 @@ ipmi_nmi(unsigned int val, struct pt_reg
the timer. So do so. */
pretimeout_since_last_heartbeat = 1;
if (atomic_inc_and_test(&preop_panic_excl))
- panic(PFX "pre-timeout");
+ nmi_panic(regs, PFX "pre-timeout");
}
return NMI_HANDLED;
_
Patches currently in -mm which might be from hidehiro.kawai.ez@xxxxxxxxxxx are
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