On 8/4/2019 8:51 PM, Trond Myklebust wrote: > On Mon, 2019-04-08 at 19:01 +0200, Daniel Mack wrote: >> Hi, >> >> I'm seeing the Oops below when trying to boot 5.1.0-rc4 on an ARM >> PXA3xx >> platform. v5.0 did not show this effect with the same cmdline. >> > Please do bisect if that is at all practical. I'm having trouble > interpreting this Oops. Here you go: 009a82f6437490c262584d65a14094a818bcb747 is the first bad commit commit 009a82f6437490c262584d65a14094a818bcb747 Author: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> Date: Sat Mar 9 12:07:17 2019 -0500 SUNRPC: Micro-optimise when the task is known not to be sleeping In cases where we know the task is not sleeping, try to optimise away the indirect call to task->tk_action() by replacing it with a direct call. Only change tail calls, to allow gcc to perform tail call elimination. Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> :040000 040000 9803b15cf8f094c6c9cf92cef34232b8173aa915 a13d38cf4e3fd4724c9b83ec837714407eda4fb6 M include :040000 040000 89666ad30932dc247554c9aff79d6b4f210be573 6d41d1d3e47ddcf2b9bd87a2ea43743ab18844be M net Any idea? Thanks, Daniel