Messages in this thread | | | Date | Wed, 4 Jan 2017 11:12:08 +0100 | From | Peter Zijlstra <> | Subject | Re: DEBUG_LOCKS_WARN_ON(1) / lockdep.c:3134 lockdep_init_map+0x1e8/0x1f0 |
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On Tue, Jan 03, 2017 at 06:11:20PM -0800, Christian Kujau wrote: > Hi, > > booting v4.10-rc2 on this PowerPC G4 machine prints the following early > on, but then continues to boot and the machine is running fine so far: > > > BUG: key ef0ba7d0 not in .data! > DEBUG_LOCKS_WARN_ON(1) > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 1 at > /usr/local/src/linux-git/kernel/locking/lockdep.c:3134 lockdep_init_map+0x1e8/0x1f0 > Modules linked in: > CPU: 0 PID: 1 Comm: swapper Not tainted 4.10.0-rc2 #4 > task: ef04aa60 task.stack: ef042000 > NIP: c005eb78 LR: c005eb78 CTR: 00000000 > REGS: ef043d70 TRAP: 0700 Not tainted (4.10.0-rc2) > MSR: 02029032 <VEC,EE,ME,IR,DR,RI> > CR: 48000022 XER: 20000000 > GPR00: c005eb78 ef043e20 ef04aa60 00000016 00000001 c0068b24 00000000 00000001 > GPR08: 00000000 00000000 00004ead 000000d6 28000024 00000000 c00047f0 00000000 > GPR16: 00000000 00000000 c08b9280 effedfa0 c078d6ac c1070000 c078eddc c078ee14 > GPR24: c078ed24 c078ee24 00000002 ef085a00 00000000 c08b0000 ef0ba7d0 ef0ba7b4 > NIP [c005eb78] lockdep_init_map+0x1e8/0x1f0 > LR [c005eb78] lockdep_init_map+0x1e8/0x1f0 > Call Trace: > [ef043e20] [c005eb78] lockdep_init_map+0x1e8/0x1f0 (unreliable) > [ef043e40] [c083adb4] kw_i2c_add+0xc0/0x134
Commit 9e607f72748d ("i2c_powermac: shut up lockdep warning") it utter crap and should never have been merged.
/me glares at mpe, why do you merge things that state: 'its unclear why, just make it go-away' wrt to locking?
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