Recent changes to printk() broke UML's stack trace output. Kill the root of the problem by using a single printk() statement. Fixes: 4bcc595ccd80decb ("printk: reinstate KERN_CONT for printing continuation lines") Cc: stable@xxxxxxxxxxxxxxx Cc: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Tested-by: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Reported-by: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Signed-off-by: Richard Weinberger <richard@xxxxxx> --- arch/um/kernel/sysrq.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c index a76295f7ede9..961be4a51511 100644 --- a/arch/um/kernel/sysrq.c +++ b/arch/um/kernel/sysrq.c @@ -20,10 +20,8 @@ static void _print_addr(void *data, unsigned long address, int reliable) { - pr_info(" [<%08lx>]", address); - pr_cont(" %s", reliable ? "" : "? "); - print_symbol("%s", address); - pr_cont("\n"); + pr_info(" [<%08lx>] %s%pB\n", address, reliable ? "" : "? ", + (void *)address); } static const struct stacktrace_ops stackops = { -- 2.10.2