On Thu, 2018-12-27 at 11:05 -0800, Guenter Roeck wrote: > Hi, > > I am getting the attached runtime warnings when enabling certain debug > options in powerpc code. The warnings are seen with pretty much all > platforms, and all active kernel releases. > > Question: Is it worthwhile to keep building / testing powerpc builds > with the respective debug options enabled, and report it once in a while, > or should I just disable the options ?
I've been fixing some issues with ppc32 and some of that stuff, I sent some experimental patches updating 4xx and Christoph sent 8xx variants, I still need to go through the other ones. Cheers, Ben. > Thanks, > Guenter > > --- > CONFIG_DEBUG_ATOMIC_SLEEP > > ------------[ cut here ]------------ > do not call blocking ops when !TASK_RUNNING; state=2 set at [<(ptrval)>] > prepare_to_wait+0x54/0xe4 > WARNING: CPU: 0 PID: 1 at kernel/sched/core.c:6099 __might_sleep+0x94/0x9c > Modules linked in: > CPU: 0 PID: 1 Comm: init Not tainted 4.20.0-yocto-standard+ #1 > NIP: c00667a0 LR: c00667a0 CTR: 00000000 > REGS: cf8df8c0 TRAP: 0700 Not tainted (4.20.0-yocto-standard+) > MSR: 00029032 <EE,ME,IR,DR,RI> CR: 28888822 XER: 20000000 > > GPR00: c00667a0 cf8df970 cf8e0000 00000062 c0af15c8 00000007 fa1ae97e > 757148e2 > GPR08: cf8de000 00000000 00000000 00000000 1f386000 00000000 00000000 > cfd83c8c > GPR16: 00000004 00000004 00000004 00000000 0000060c 0000000a cf8dfdb8 > cf267804 > GPR24: cf8dfd78 cf8dfd68 cfa88a20 cec70830 00000001 00000000 000001d3 > c0b444cc > NIP [c00667a0] __might_sleep+0x94/0x9c > LR [c00667a0] __might_sleep+0x94/0x9c > Call Trace: > [cf8df970] [c00667a0] __might_sleep+0x94/0x9c (unreliable) > [cf8df990] [c05beddc] do_ide_request+0x48/0x6bc > [cf8dfa10] [c0492bcc] __blk_run_queue+0x80/0x10c > [cf8dfa20] [c049a938] blk_flush_plug_list+0x23c/0x258 > [cf8dfa60] [c006b888] io_schedule_prepare+0x44/0x5c > [cf8dfa70] [c006b8c0] io_schedule+0x20/0x48 > [cf8dfa80] [c095e1ac] bit_wait_io+0x24/0x74 > [cf8dfa90] [c095dd94] __wait_on_bit+0xac/0x104 > [cf8dfab0] [c095de74] out_of_line_wait_on_bit+0x88/0x98 > [cf8dfae0] [c0229094] bh_submit_read+0xf8/0x104 > [cf8dfaf0] [c028b9a8] ext4_get_branch+0xdc/0x168 > [cf8dfb20] [c028c7fc] ext4_ind_map_blocks+0x2b0/0xc08 > [cf8dfc30] [c029551c] ext4_map_blocks+0x2e0/0x65c > [cf8dfc80] [c02b8c84] ext4_mpage_readpages+0x5e8/0x97c > [cf8dfd60] [c016c3cc] read_pages+0x60/0x1a0 > [cf8dfdb0] [c016c6e8] __do_page_cache_readahead+0x1dc/0x208 > [cf8dfe10] [c0159768] filemap_fault+0x418/0x834 > [cf8dfe50] [c02a00fc] ext4_filemap_fault+0x40/0x64 > [cf8dfe60] [c0198d0c] __do_fault+0x34/0xb8 > [cf8dfe70] [c019e264] handle_mm_fault+0xc44/0xf88 > [cf8dfef0] [c001a218] __do_page_fault+0x158/0x7b4 > [cf8dff40] [c00143b4] handle_page_fault+0x14/0x40 > --- interrupt: 301 at 0xb7904a70 > LR = 0xb78ef0c8 > Instruction dump: > 7fe3fb78 bba10014 7c0803a6 38210020 4bfffd20 808a0000 3c60c0b0 39400001 > 7cc53378 3863a558 99490001 4bfd03bd <0fe00000> 4bffffc0 7c0802a6 90010004 > irq event stamp: 126702 > hardirqs last enabled at (126701): [<c0091a74>] console_unlock+0x434/0x5d0 > hardirqs last disabled at (126702): [<c00140b4>] reenable_mmu+0x30/0x88 > softirqs last enabled at (126552): [<c0964614>] __do_softirq+0x42c/0x4a0 > softirqs last disabled at (126529): [<c003cda4>] irq_exit+0x104/0x108 > ---[ end trace 4f6c84b7815474d9 ]--- > > --- > #if defined(CONFIG_PROVE_LOCKING) && defined(CONFIG_DEBUG_LOCKDEP) && \ > defined(CONFIG_TRACE_IRQFLAGS) > > ------------[ cut here ]------------ > DEBUG_LOCKS_WARN_ON(!current->hardirqs_enabled) > WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:3762 > check_flags.part.25+0x1a0/0x1c4 > Modules linked in: > CPU: 0 PID: 1 Comm: init Tainted: G W 4.20.0-yocto-standard+ #1 > NIP: c00839f0 LR: c00839f0 CTR: 00000000 > REGS: cf8dfe00 TRAP: 0700 Tainted: G W > (4.20.0-yocto-standard+) > MSR: 00021032 <ME,IR,DR,RI> CR: 28282222 XER: 20000000 > > GPR00: c00839f0 cf8dfeb0 cf8e0000 0000002f 00000001 c00938f4 c1425b76 > 0000002f > GPR08: 00001032 00000000 00000001 00000004 28282828 00000000 00000000 > b7927688 > GPR16: 00000000 bfe20a5c bfe20a58 0fe5fff8 10000b38 10002178 00000000 > b7929c20 > GPR24: c095d81c 7c9319ee 00000000 00000000 b7929ae0 cf8e0000 00009032 > c0d20000 > NIP [c00839f0] check_flags.part.25+0x1a0/0x1c4 > LR [c00839f0] check_flags.part.25+0x1a0/0x1c4 > Call Trace: > [cf8dfeb0] [c00839f0] check_flags.part.25+0x1a0/0x1c4 (unreliable) > [cf8dfec0] [c0085f6c] lock_is_held_type+0x78/0xb4 > [cf8dfee0] [c095d35c] __schedule+0x6cc/0xb44 > [cf8dff30] [c095d81c] schedule+0x48/0xb8 > [cf8dff40] [c0014694] recheck+0x0/0x20 > --- interrupt: 501 at 0xb78f2850 > LR = 0xb78f2a24 > Instruction dump: > 3c80c0b0 3c60c0af 3884d684 38635f94 4bfb3189 0fe00000 4bfffec8 3c80c0b0 > 3c60c0af 3884d668 38635f94 4bfb316d <0fe00000> 4bfffefc 3c80c0b0 3c60c0af > irq event stamp: 127630 > hardirqs last enabled at (127629): [<c09636f4>] > _raw_spin_unlock_irq+0x3c/0x94 > hardirqs last disabled at (127630): [<c00140b4>] reenable_mmu+0x30/0x88 > softirqs last enabled at (127402): [<c0964614>] __do_softirq+0x42c/0x4a0 > softirqs last disabled at (127393): [<c003cda4>] irq_exit+0x104/0x108 > ---[ end trace 4f6c84b7815474da ]--- > possible reason: unannotated irqs-on. > irq event stamp: 127630 > hardirqs last enabled at (127629): [<c09636f4>] > _raw_spin_unlock_irq+0x3c/0x94 > hardirqs last disabled at (127630): [<c00140b4>] reenable_mmu+0x30/0x88 > softirqs last enabled at (127402): [<c0964614>] __do_softirq+0x42c/0x4a0 > softirqs last disabled at (127393): [<c003cda4>] irq_exit+0x104/0x108 > > DEBUG_LOCKS_WARN_ON(!current->hardirqs_enabled) > WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:3762 > check_flags.part.25+0x1a0/0x1c4 > Modules linked in: > CPU: 0 PID: 1 Comm: init Not tainted 4.20.0-yocto-standard+ #1 > NIP: c00a53bc LR: c00a53bc CTR: 00000000 > REGS: cf8e9df0 TRAP: 0700 Not tainted (4.20.0-yocto-standard+) > MSR: 00021032 <ME,IR,DR,RI> CR: 28028222 XER: 00000000 > > GPR00: c00a53bc cf8e9ea0 cf8e0000 0000002f 00000001 c00b6614 c149a08e > 0f054000 > GPR08: 0f054000 00000000 00000001 00000004 28028822 00000000 00000000 > b78c4200 > GPR16: 00000000 bfebc2d8 00000000 b78c2af0 0000000a cfd274a0 00000000 > c09c343c > GPR24: 00000000 c0d7ebdc b78c4200 00000000 c0d6faf2 cf8e0000 00009032 > c0da0000 > NIP [c00a53bc] check_flags.part.25+0x1a0/0x1c4 > LR [c00a53bc] check_flags.part.25+0x1a0/0x1c4 > Call Trace: > [cf8e9ea0] [c00a53bc] check_flags.part.25+0x1a0/0x1c4 (unreliable) > [cf8e9eb0] [c00a7a80] lock_is_held_type+0x78/0xb4 > [cf8e9ed0] [c09c2e50] __schedule+0x740/0xce4 > [cf8e9f30] [c09c343c] schedule+0x48/0xb8 > [cf8e9f40] [c0015698] recheck+0x0/0x20 > --- interrupt: 901 at 0xb788cfe8 > LR = 0xb788cd44 > Instruction dump: > 3c80c0b7 3c60c0b6 38849aac 38631790 4bf955f5 0fe00000 4bfffec8 3c80c0b7 > 3c60c0b6 38849a90 38631790 4bf955d9 <0fe00000> 4bfffefc 3c80c0b7 3c60c0b6 > irq event stamp: 131268 > hardirqs last enabled at (131266): [<c00d0c84>] > rcu_process_callbacks+0x594/0x770 > hardirqs last disabled at (131267): [<c09caf7c>] __do_softirq+0x494/0x5e4 > softirqs last enabled at (131268): [<c09caff8>] __do_softirq+0x510/0x5e4 > softirqs last disabled at (131255): [<c0042310>] irq_exit+0x128/0x12c > ---[ end trace 0fd813db98ea17dc ]--- > possible reason: unannotated irqs-on. > irq event stamp: 131268 > hardirqs last enabled at (131266): [<c00d0c84>] > rcu_process_callbacks+0x594/0x770 > hardirqs last disabled at (131267): [<c09caf7c>] __do_softirq+0x494/0x5e4 > softirqs last enabled at (131268): [<c09caff8>] __do_softirq+0x510/0x5e4 > softirqs last disabled at (131255): [<c0042310>] irq_exit+0x128/0x12c
