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SubjectRe: [PATCH v8 17/18] scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug
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On Tue, 2020-11-03 at 10:54 +0000, John Garry wrote:
> I have no x86 system to test that x86 config, though. How about
> v5.10-rc2 for this issue?

v5.10-rc2 is also broken here.

[ 251.941451][ T330] INFO: task systemd-udevd:551 blocked for more than 122 seconds.
[ 251.949176][ T330] Not tainted 5.10.0-rc2 #3
[ 251.954094][ T330] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 251.962633][ T330] task:systemd-udevd state:D stack:27160 pid: 551 ppid: 506 flags:0x00000324
[ 251.971707][ T330] Call Trace:
[ 251.974871][ T330] __schedule+0x71d/0x1b50
[ 251.979155][ T330] ? kcore_callback+0x1d/0x1d
[ 251.983709][ T330] schedule+0xbf/0x270
[ 251.987640][ T330] schedule_timeout+0x3fc/0x590
[ 251.992370][ T330] ? usleep_range+0x120/0x120
[ 251.996910][ T330] ? wait_for_completion+0x156/0x250
[ 252.002080][ T330] ? lock_downgrade+0x700/0x700
[ 252.006792][ T330] ? rcu_read_unlock+0x40/0x40
[ 252.011435][ T330] ? do_raw_spin_lock+0x121/0x290
[ 252.016324][ T330] ? lockdep_hardirqs_on_prepare+0x27c/0x3d0
[ 252.022178][ T330] ? _raw_spin_unlock_irq+0x1f/0x30
[ 252.027235][ T330] wait_for_completion+0x15e/0x250
[ 252.032226][ T330] ? wait_for_completion_interruptible+0x2f0/0x2f0
[ 252.038590][ T330] ? lockdep_hardirqs_on_prepare+0x27c/0x3d0
[ 252.044443][ T330] ? _raw_spin_unlock_irq+0x1f/0x30
[ 252.049502][ T330] __flush_work+0x42a/0x900
[ 252.053882][ T330] ? queue_delayed_work_on+0x90/0x90
[ 252.059025][ T330] ? __queue_work+0x463/0xf40
[ 252.063583][ T330] ? init_pwq+0x320/0x320
[ 252.067777][ T330] ? queue_work_on+0x5e/0x80
[ 252.072249][ T330] ? trace_hardirqs_on+0x1c/0x150
[ 252.077138][ T330] work_on_cpu+0xe7/0x130
[ 252.081347][ T330] ? flush_delayed_work+0xc0/0xc0
[ 252.086231][ T330] ? __mutex_unlock_slowpath+0xd4/0x670
[ 252.091655][ T330] ? work_debug_hint+0x30/0x30
[ 252.096284][ T330] ? pci_device_shutdown+0x80/0x80
[ 252.101274][ T330] ? cpumask_next_and+0x57/0x80
[ 252.105990][ T330] pci_device_probe+0x500/0x5c0
[ 252.110703][ T330] ? pci_device_remove+0x1f0/0x1f0
[ 252.115697][ T330] really_probe+0x207/0xad0
[ 252.120065][ T330] ? device_driver_attach+0x120/0x120
[ 252.125317][ T330] driver_probe_device+0x1f1/0x370
[ 252.130291][ T330] device_driver_attach+0xe5/0x120
[ 252.135281][ T330] __driver_attach+0xf0/0x260
[ 252.139827][ T330] bus_for_each_dev+0x117/0x1a0
[ 252.144552][ T330] ? subsys_dev_iter_exit+0x10/0x10
[ 252.149609][ T330] bus_add_driver+0x399/0x560
[ 252.154166][ T330] driver_register+0x189/0x310
[ 252.158795][ T330] ? 0xffffffffc05c5000
[ 252.162838][ T330] megasas_init+0x117/0x1000 [megaraid_sas]
[ 252.168593][ T330] do_one_initcall+0xf6/0x510
[ 252.173143][ T330] ? perf_trace_initcall_level+0x490/0x490
[ 252.178809][ T330] ? kasan_unpoison_shadow+0x30/0x40
[ 252.183973][ T330] ? __kasan_kmalloc.constprop.11+0xc1/0xd0
[ 252.189728][ T330] ? do_init_module+0x49/0x6c0
[ 252.194370][ T330] ? kmem_cache_alloc_trace+0x12e/0x2a0
[ 252.199780][ T330] ? kasan_unpoison_shadow+0x30/0x40
[ 252.204942][ T330] do_init_module+0x1ed/0x6c0
[ 252.209479][ T330] load_module+0x4a25/0x5cf0
[ 252.213950][ T330] ? layout_and_allocate+0x2770/0x2770
[ 252.219271][ T330] ? __vmalloc_node+0x8d/0x100
[ 252.223913][ T330] ? kernel_read_file+0x485/0x5a0
[ 252.228796][ T330] ? kernel_read_file+0x305/0x5a0
[ 252.233696][ T330] ? __ia32_sys_fsconfig+0x6a0/0x6a0
[ 252.238841][ T330] ? __do_sys_finit_module+0xff/0x180
[ 252.244093][ T330] __do_sys_finit_module+0xff/0x180
[ 252.249155][ T330] ? __do_sys_init_module+0x1d0/0x1d0
[ 252.254403][ T330] ? __fget_files+0x1c3/0x2e0
[ 252.258940][ T330] do_syscall_64+0x33/0x40
[ 252.263234][ T330] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 252.268984][ T330] RIP: 0033:0x7f7cf6a4878d
[ 252.273276][ T330] Code: Unable to access opcode bytes at RIP 0x7f7cf6a48763.
[ 252.280499][ T330] RSP: 002b:00007ffcfa94b978 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 252.288781][ T330] RAX: ffffffffffffffda RBX: 000055e01f48b730 RCX: 00007f7cf6a4878d
[ 252.296628][ T330] RDX: 0000000000000000 RSI: 00007f7cf75ba82d RDI: 0000000000000006
[ 252.304482][ T330] RBP: 00007f7cf75ba82d R08: 0000000000000000 R09: 00007ffcfa94baa0
[ 252.312331][ T330] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
[ 252.320167][ T330] R13: 000055e01f433530 R14: 0000000000020000 R15: 0000000000000000
[ 252.328052][ T330]
[ 252.328052][ T330] Showing all locks held in the system:
[ 252.335722][ T330] 3 locks held by kworker/3:1/289:
[ 252.340697][ T330] #0: ffff8881001eb338 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7ec/0x1610
[ 252.350906][ T330] #1: ffffc90004ef7e00 ((work_completion)(&wfc.work)){+.+.}-{0:0}, at: process_one_work+0x820/0x1610
[ 252.361725][ T330] #2: ffff88810dc600e0 (&shost->scan_mutex){+.+.}-{3:3}, at: scsi_scan_host_selected+0xde/0x260
[ 252.372132][ T330] 1 lock held by khungtaskd/330:
[ 252.376933][ T330] #0: ffffffffb42d2de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire.constprop.52+0x0/0x30
[ 252.387234][ T330] 1 lock held by systemd-journal/398:
[ 252.392489][ T330] 1 lock held by systemd-udevd/551:
[ 252.397550][ T330] #0: ffff888109a49218 (&dev->mutex){....}-{3:3}, at: device_driver_attach+0x37/0x120
[ 252.407085][ T330]
[ 252.409285][ T330] =============================================
[ 252.409285][ T330]


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