Messages in this thread | | | Date | Sat, 4 May 2024 16:59:40 +0200 | From | Erhard Furtner <> | Subject | Re: WARNING: CPU: 1 PID: 1 at net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c at boot when netconsole is enabled (kernel v6.9-rc5, v6.8.7, sungem, PowerMac G4 DP) |
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On Mon, 29 Apr 2024 18:36:30 -0700 Jakub Kicinski <kuba@kernel.org> wrote:
> On Sun, 28 Apr 2024 12:53:06 +0200 Erhard Furtner wrote: > > With netconsole enabled I get this "WARNING: CPU: 1 PID: 1 at > > net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c" and "WARNING: > > CPU: 1 PID: 1 at kernel/locking/irqflag-debug.c:10 > > warn_bogus_irq_restore+0x30/0x44" at boot on my PowerMac G4 DP. > > Happens more often than not (6-7 out of 10 times booting): > > Could you try with LOCKDEP enabled? > I wonder if irqs_disabled() behaves differently than we expect.
Enabled LOCK_ALLOC and LOCKDEP and re-tried with v6.9-rc6. I can reproduce the WARNING but got no additional dmesg.
I'll check whether PROVE_LOCKING makes a difference or any of the locking tests show something interesting.
Full dmesg attached.
Regards, Erhard [unhandled content-type:application/octet-stream] | |