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Subject4.16 genirq change prevents HP servers from booting [was: Re: linux-next: Signed-off-by missing for commit in the device-mapper tree]
On Mon, Jan 15 2018 at  8:27am -0500,
Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> Hi all,
>
> Commit
>
> 34e1467da673 ("Revert "genirq/affinity: assign vectors to all possible CPUs"")
>
> is missing a Signed-off-by from its author and committer.
>
> Reverts are commits as well.

Right, I'm aware. I staged the tree that made some HP servers finally
work with the latest linux-block 4.16 changes. Without thinking about
the broader implications. Anyway, I'll drop the revert from
linux-dm.git's 'for-next'.

Because I'm confident others will hunt down the irq issues.

I think Ming was looking to grab the queue mapping info and CPU related
info from the affected server.

> Though I do note it actually has a reasonable commit message, thanks.

Semi-reasonable. Lacks detail. The issue is that over the weekend
Laurence found linux-block.git commit 84676c1f21e8ff54befe98 prevents
some HP servers from booting. They'd hang when trying to initialize
their HPSA controller's devices, e.g.:

[ 246.751050] INFO: task systemd-udevd:411 blocked for more than 120
seconds.
[ 246.791852] Tainted: G I 4.15.0-rc4.block.dm.4.16+ #1
[ 246.830650] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 246.874637] systemd-udevd D 0 411 408 0x80000004
[ 246.904934] Call Trace:
[ 246.918191] ? __schedule+0x28d/0x870
[ 246.937643] ? _cond_resched+0x15/0x30
[ 246.958222] schedule+0x32/0x80
[ 246.975424] async_synchronize_cookie_domain+0x8b/0x140
[ 247.004452] ? remove_wait_queue+0x60/0x60
[ 247.027335] do_init_module+0xbe/0x219
[ 247.048022] load_module+0x21d6/0x2910
[ 247.069436] ? m_show+0x1c0/0x1c0
[ 247.087999] SYSC_finit_module+0x94/0xe0
[ 247.110392] entry_SYSCALL_64_fastpath+0x1a/0x7d
[ 247.136669] RIP: 0033:0x7f84049287f9
[ 247.156112] RSP: 002b:00007ffd13199ab8 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 247.196883] RAX: ffffffffffffffda RBX: 000055b712b59e80 RCX:
00007f84049287f9
[ 247.237989] RDX: 0000000000000000 RSI: 00007f8405245099 RDI:
0000000000000008
[ 247.279105] RBP: 00007f8404bf2760 R08: 0000000000000000 R09:
000055b712b45760
[ 247.320005] R10: 0000000000000008 R11: 0000000000000246 R12:
0000000000000020
[ 247.360625] R13: 00007f8404bf2818 R14: 0000000000000050 R15:
00007f8404bf27b8
[ 247.401062] INFO: task scsi_eh_0:471 blocked for more than 120 seconds.
[ 247.438161] Tainted: G I 4.15.0-rc4.block.dm.4.16+ #1
[ 247.476640] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 247.520700] scsi_eh_0 D 0 471 2 0x80000000
[ 247.551339] Call Trace:
[ 247.564360] ? __schedule+0x28d/0x870
[ 247.584720] schedule+0x32/0x80
[ 247.601294] hpsa_eh_device_reset_handler+0x68c/0x700 [hpsa]
[ 247.633358] ? remove_wait_queue+0x60/0x60
[ 247.656345] scsi_try_bus_device_reset+0x27/0x40
[ 247.682424] scsi_eh_ready_devs+0x53f/0xe20
[ 247.706467] ? __pm_runtime_resume+0x55/0x70
[ 247.730327] scsi_error_handler+0x434/0x5e0
[ 247.754387] ? __schedule+0x295/0x870
[ 247.775420] kthread+0xf5/0x130
[ 247.793461] ? scsi_eh_get_sense+0x240/0x240
[ 247.818008] ? kthread_associate_blkcg+0x90/0x90
[ 247.844759] ret_from_fork+0x1f/0x30
[ 247.865440] INFO: task scsi_id:488 blocked for more than 120 seconds.
[ 247.901112] Tainted: G I 4.15.0-rc4.block.dm.4.16+ #1
[ 247.938743] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[ 247.981092] scsi_id D 0 488 1 0x00000004
[ 248.010535] Call Trace:
[ 248.023567] ? __schedule+0x28d/0x870
[ 248.044236] ? __switch_to+0x1f5/0x460
[ 248.065776] schedule+0x32/0x80
[ 248.084238] schedule_timeout+0x1d4/0x2f0
[ 248.106184] wait_for_completion+0x123/0x190
[ 248.130759] ? wake_up_q+0x70/0x70
[ 248.150295] flush_work+0x119/0x1a0
[ 248.169238] ? wake_up_worker+0x30/0x30
[ 248.189670] __cancel_work_timer+0x103/0x190
[ 248.213751] ? kobj_lookup+0x10b/0x160
[ 248.235441] disk_block_events+0x6f/0x90
[ 248.257820] __blkdev_get+0x6a/0x480
[ 248.278770] ? bd_acquire+0xd0/0xd0
[ 248.298438] blkdev_get+0x1a5/0x300
[ 248.316587] ? bd_acquire+0xd0/0xd0
[ 248.334814] do_dentry_open+0x202/0x320
[ 248.354372] ? security_inode_permission+0x3c/0x50
[ 248.378818] path_openat+0x537/0x12c0
[ 248.397386] ? vm_insert_page+0x1e0/0x1f0
[ 248.417664] ? vvar_fault+0x75/0x140
[ 248.435811] do_filp_open+0x91/0x100
[ 248.454061] do_sys_open+0x126/0x210
[ 248.472462] entry_SYSCALL_64_fastpath+0x1a/0x7d
[ 248.495438] RIP: 0033:0x7f39e60e1e90
[ 248.513136] RSP: 002b:00007ffc4c906ba8 EFLAGS: 00000246 ORIG_RAX:
0000000000000002
[ 248.550726] RAX: ffffffffffffffda RBX: 00005624aead3010 RCX:
00007f39e60e1e90
[ 248.586207] RDX: 00007f39e60cc0c4 RSI: 0000000000080800 RDI:
00007ffc4c906ed0
[ 248.622411] RBP: 00007ffc4c906b60 R08: 00007f39e60cc140 R09:
00007f39e60cc140
[ 248.658704] R10: 000000000000001f R11: 0000000000000246 R12:
00007ffc4c906ed0
[ 248.695771] R13: 000000009da9d520 R14: 0000000000000000 R15:
00007ffc4c906c28

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