* Re: [PATCH v3 19/35] x86/io_apic: Cleanup trigger/polarity helpers [not found] ` <20201024213535.443185-20-dwmw2@infradead.org> @ 2020-11-10 6:31 ` Qian Cai 2020-11-10 8:59 ` David Woodhouse 0 siblings, 1 reply; 3+ messages in thread From: Qian Cai @ 2020-11-10 6:31 UTC (permalink / raw) To: David Woodhouse, x86, Thomas Gleixner Cc: kvm, iommu, joro, Paolo Bonzini, linux-kernel, linux-hyperv, maz, Dexuan Cui, Stephen Rothwell, Linux Next Mailing List On Sat, 2020-10-24 at 22:35 +0100, David Woodhouse wrote: > From: Thomas Gleixner <tglx@linutronix•de> > > 'trigger' and 'polarity' are used throughout the I/O-APIC code for handling > the trigger type (edge/level) and the active low/high configuration. While > there are defines for initializing these variables and struct members, they > are not used consequently and the meaning of 'trigger' and 'polarity' is > opaque and confusing at best. > > Rename them to 'is_level' and 'active_low' and make them boolean in various > structs so it's entirely clear what the meaning is. > > Signed-off-by: Thomas Gleixner <tglx@linutronix•de> > Signed-off-by: David Woodhouse <dwmw@amazon•co.uk> > --- > arch/x86/include/asm/hw_irq.h | 6 +- > arch/x86/kernel/apic/io_apic.c | 244 +++++++++++++--------------- > arch/x86/pci/intel_mid_pci.c | 8 +- > drivers/iommu/amd/iommu.c | 10 +- > drivers/iommu/intel/irq_remapping.c | 9 +- > 5 files changed, 130 insertions(+), 147 deletions(-) Reverting the rest of patchset up to this commit on next-20201109 fixed an endless soft-lockups issue booting an AMD server below. I noticed that the failed boots always has this IOMMU IO_PAGE_FAULT before those soft-lockups: [ 3404.093354][ T1] AMD-Vi: Interrupt remapping enabled [ 3404.098593][ T1] AMD-Vi: Virtual APIC enabled [ 3404.107783][ T340] pci 0000:00:14.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0xfffffffdf8020200 flags=0x0008] [ 3404.120644][ T1] AMD-Vi: Lazy IO/TLB flushing enabled [ 3404.126011][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 3404.133173][ T1] software IO TLB: mapped [mem 0x0000000068dcf000-0x000000006cdcf000] (64MB) .config (if ever matters): https://cailca.coding.net/public/linux/mm/git/files/master/x86.config good boot dmesg (with the commits reverted): http://people.redhat.com/qcai/dmesg.txt == system info == Dell Poweredge R6415 AMD EPYC 7401P 24-Core Processor 24576 MB memory, 239 GB disk space [ OK ] Started Flush Journal to Persistent Storage. [ OK ] Started udev Kernel Device Manager. [ OK ] Started udev Coldplug all Devices. [ OK ] Started Monitoring of LVM2 mirrors,…sing dmeventd or progress polling. [ OK ] Reached target Local File Systems (Pre). Mounting /boot... [ OK ] Created slice system-lvm2\x2dpvscan.slice. [ 3740.376500][ T1058] XFS (sda1): Mounting V5 Filesystem [ 3740.438474][ T1058] XFS (sda1): Ending clean mount [ 3765.159433][ C0] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd:1] [ 3765.166929][ C0] Modules linked in: acpi_cpufreq(+) ip_tables x_tables sd_mod ahci libahci tg3 bnxt_en megaraid_sas libata firmware_class libphy dm_mirror dm_region_hash dm_log dm_mod [ 3765.183576][ C0] irq event stamp: 26230104 [ 3765.187954][ C0] hardirqs last enabled at (26230103): [<ffffffff82800b9e>] asm_common_interrupt+0x1e/0x40 [ 3765.197873][ C0] hardirqs last disabled at (26230104): [<ffffffff8277e45a>] sysvec_apic_timer_interrupt+0xa/0xa0 [ 3765.208303][ C0] softirqs last enabled at (26202664): [<ffffffff82a0061b>] __do_softirq+0x61b/0x95d [ 3765.217699][ C0] softirqs last disabled at (26202591): [<ffffffff82800ec2>] asm_call_irq_on_stack+0x12/0x20 [ 3765.227702][ C0] CPU: 0 PID: 1 Comm: systemd Not tainted 5.10.0-rc2-next-20201109+ #2 [ 3765.235793][ C0] Hardware name: Dell Inc. PowerEdge R6415/07YXFK, BIOS 1.9.3 06/25/2019 [ 3765.244065][ C0] RIP: 0010:lock_acquire+0x1f4/0x820 lock_acquire at kernel/locking/lockdep.c:5404 [ 3765.249211][ C0] Code: ff ff ff 48 83 c4 20 65 0f c1 05 a7 ba 9e 7e 83 f8 01 4c 8b 54 24 08 0f 85 60 04 00 00 41 52 9d 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 c7 03 00 00 00 00 c7 43 08 00 00 00 00 48 8b0 [ 3765.268657][ C0] RSP: 0018:ffffc9000006f9f8 EFLAGS: 00000246 [ 3765.274587][ C0] RAX: dffffc0000000000 RBX: 1ffff9200000df42 RCX: 1ffff9200000df28 [ 3765.282420][ C0] RDX: 1ffff11020645769 RSI: 00000000ffffffff RDI: 0000000000000001 [ 3765.290256][ C0] RBP: 0000000000000001 R08: fffffbfff164cb10 R09: fffffbfff164cb10 [ 3765.298090][ C0] R10: 0000000000000246 R11: fffffbfff164cb0f R12: ffff88812be555b0 [ 3765.305922][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 3765.313750][ C0] FS: 00007f12bb8c59c0(0000) GS:ffff8881b7000000(0000) knlGS:0000000000000000 [ 3765.322537][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3765.328985][ C0] CR2: 00007f0c2d828fd0 CR3: 000000011868a000 CR4: 00000000003506f0 [ 3765.336820][ C0] Call Trace: [ 3765.339979][ C0] ? rcu_read_unlock+0x40/0x40 [ 3765.344609][ C0] __d_move+0x2a2/0x16f0 __seqprop_spinlock_assert at include/linux/seqlock.h:277 (inlined by) __d_move at fs/dcache.c:2861 [ 3765.348711][ C0] ? d_move+0x47/0x70 [ 3765.352560][ C0] ? _raw_spin_unlock+0x1a/0x30 [ 3765.357275][ C0] d_move+0x47/0x70 write_seqcount_t_end at include/linux/seqlock.h:560 (inlined by) write_sequnlock at include/linux/seqlock.h:901 (inlined by) d_move at fs/dcache.c:2916 [ 3765.360951][ C0] ? vfs_rename+0x9ac/0x1270 [ 3765.365402][ C0] vfs_rename+0x9ac/0x1270 vfs_rename at fs/namei.c:4330 [ 3765.369687][ C0] ? vfs_link+0x830/0x830 [ 3765.373878][ C0] ? do_renameat2+0x58c/0x930 [ 3765.378419][ C0] do_renameat2+0x58c/0x930 do_renameat2 at fs/namei.c:4455 [ 3765.382790][ C0] ? __ia32_sys_link+0x80/0x80 [ 3765.387418][ C0] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 3765.392563][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 3765.397965][ C0] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 3765.403112][ C0] ? lockdep_hardirqs_on_prepare+0x27c/0x3d0 [ 3765.408955][ C0] ? trace_hardirqs_on+0x1c/0x150 [ 3765.413841][ C0] ? asm_common_interrupt+0x1e/0x40 [ 3765.418905][ C0] ? strncpy_from_user+0x14c/0x330 [ 3765.423878][ C0] ? strncpy_from_user+0x6b/0x330 [ 3765.428764][ C0] ? getname_flags+0x88/0x3e0 [ 3765.433307][ C0] __x64_sys_rename+0x75/0x90 __x64_sys_rename at fs/namei.c:4504 [ 3765.437848][ C0] do_syscall_64+0x33/0x40 [ 3765.442129][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3765.447882][ C0] RIP: 0033:0x7f12b9b759eb [ 3765.452166][ C0] Code: e8 5a 0a 08 00 85 c0 0f 95 c0 0f b6 c0 f7 d8 5b c3 66 0f 1f 44 00 00 b8 ff ff ff ff 5b c3 90 f3 0f 1e fa b8 52 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 69 e48 [ 3765.471611][ C0] RSP: 002b:00007fff76252538 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 3765.479880][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f12b9b759eb [ 3765.487715][ C0] RDX: 000055ea2997f400 RSI: 00007fff76252570 RDI: 000055ea2997f450 [ 3765.495548][ C0] RBP: 00007fff76252570 R08: 0000000000000000 R09: 0000000065732e32 [ 3765.503374][ C0] R10: 0000000000000003 R11: 0000000000000246 R12: 000055ea2996fcf8 [ 3765.511201][ C0] R13: 000055ea2996fcf8 R14: 000055ea277097f0 R15: 0000000000000000 [ 3765.939428][ C14] watchdog: BUG: soft lockup - CPU#14 stuck for 23s! [systemd-udevd:976] [ 3765.947707][ C14] Modules linked in: acpi_cpufreq(+) ip_tables x_tables sd_mod ahci libahci tg3 bnxt_en megaraid_sas libata firmware_class libphy dm_mirror dm_region_hash dm_log dm_mod [ 3765.964357][ C14] irq event stamp: 535074 [ 3765.968564][ C14] hardirqs last enabled at (535073): [<ffffffff82800c42>] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 3765.979266][ C14] hardirqs last disabled at (535074): [<ffffffff8277e45a>] sysvec_apic_timer_interrupt+0xa/0xa0 [ 3765.989532][ C14] softirqs last enabled at (535072): [<ffffffff82a0061b>] __do_softirq+0x61b/0x95d [ 3765.998761][ C14] softirqs last disabled at (535067): [<ffffffff82800ec2>] asm_call_irq_on_stack+0x12/0x20 [ 3766.008590][ C14] CPU: 14 PID: 976 Comm: systemd-udevd Tainted: G L 5.10.0-rc2-next-20201109+ #2 [ 3766.018851][ C14] Hardware name: Dell Inc. PowerEdge R6415/07YXFK, BIOS 1.9.3 06/25/2019 [ 3766.027130][ C14] RIP: 0010:path_init+0x1dd/0x1380 __seqprop_spinlock_sequence at include/linux/seqlock.h:277 (inlined by) path_init at fs/namei.c:2219 [ 3766.032112][ C14] Code: 03 0f 8e 79 11 00 00 44 8b 3d 5f f0 6e 01 41 f6 c7 01 74 2e 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 48 01 c1 f3 90 <0f> b6 01 84 c0 74 08 3c 03 0f 8e 9a 0d 00 00 44 8b 3a1 [ 3766.051565][ C14] RSP: 0018:ffffc90006bdfa78 EFLAGS: 00000202 [ 3766.057493][ C14] RAX: 0000000000000000 RBX: ffffc90006bdfcc0 RCX: fffffbfff06426b0 [ 3766.065330][ C14] RDX: ffffffff83213580 RSI: 00000000d93ef353 RDI: ffffc90006bdfd00 [ 3766.073163][ C14] RBP: ffffc90006bdfb08 R08: fffffbfff164cb0d R09: fffffbfff164cb0d [ 3766.080997][ C14] R10: 0000000000000246 R11: fffffbfff164cb0c R12: ffff8881159d0060 [ 3766.088831][ C14] R13: ffffc90006bdfcf8 R14: 0000000000000041 R15: 000000000000039d [ 3766.096665][ C14] FS: 00007f0c2ec45980(0000) GS:ffff88866dec0000(0000) knlGS:0000000000000000 [ 3766.105454][ C14] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3766.111900][ C14] CR2: 00007f79350ceb84 CR3: 0000000160a84000 CR4: 00000000003506e0 [ 3766.119737][ C14] Call Trace: [ 3766.122899][ C14] ? debug_mutex_init+0x31/0x60 [ 3766.127614][ C14] path_openat+0x154/0x1b00 path_openat at fs/namei.c:3364 [ 3766.131988][ C14] ? rcu_read_lock_held+0xb0/0xb0 [ 3766.136881][ C14] ? __lock_acquire+0x1dad/0x3890 [ 3766.141767][ C14] ? path_parentat.isra.62+0x190/0x190 [ 3766.147090][ C14] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 3766.152496][ C14] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 3766.157646][ C14] do_filp_open+0x171/0x240 [ 3766.162017][ C14] ? may_open_dev+0xc0/0xc0 [ 3766.166388][ C14] ? lock_downgrade+0x700/0x700 [ 3766.171104][ C14] ? rcu_read_unlock+0x40/0x40 [ 3766.175735][ C14] ? rwlock_bug.part.1+0x90/0x90 [ 3766.180543][ C14] ? __check_object_size+0x454/0x670 [ 3766.185692][ C14] ? do_raw_spin_unlock+0x4f/0x250 [ 3766.190668][ C14] ? __alloc_fd+0x184/0x500 [ 3766.195031][ C14] do_sys_openat2+0x2db/0x5b0 [ 3766.199576][ C14] ? memset+0x1f/0x40 [ 3766.203422][ C14] ? file_open_root+0x200/0x200 [ 3766.208136][ C14] do_sys_open+0x85/0xd0 [ 3766.212245][ C14] ? filp_open+0x50/0x50 [ 3766.216353][ C14] ? syscall_trace_enter.isra.21+0x54/0x1f0 [ 3766.222107][ C14] do_syscall_64+0x33/0x40 [ 3766.226389][ C14] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3766.232145][ C14] RIP: 0033:0x7f0c2d828552 [ 3766.236426][ C14] Code: 25 00 00 41 00 3d 00 00 41 00 74 4c 48 8d 05 15 50 2d 00 8b 00 85 c0 75 6d 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 0f 87 a2 00 00 00 48 8b 4c 24 28 645 [ 3766.255873][ C14] RSP: 002b:00007ffc65d36000 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 3766.264147][ C14] RAX: ffffffffffffffda RBX: 0000564d81e50770 RCX: 00007f0c2d828552 [ 3766.271982][ C14] RDX: 0000000000080000 RSI: 00007ffc65d36150 RDI: 00000000ffffff9c [ 3766.279817][ C14] RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001 [ 3766.287651][ C14] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0c2e733347 [ 3766.295486][ C14] R13: 00007f0c2e733347 R14: 0000000000000001 R15: 0000564d81e2d1b8 [ 3766.469430][ C28] watchdog: BUG: soft lockup - CPU#28 stuck for 22s! [mount:1058] [ 3766.477105][ C28] Modules linked in: acpi_cpufreq(+) ip_tables x_tables sd_mod ahci libahci tg3 bnxt_en megaraid_sas libata firmware_class libphy dm_mirror dm_region_hash dm_log dm_mod [ 3766.493753][ C28] irq event stamp: 88756 [ 3766.497868][ C28] hardirqs last enabled at (88755): [<ffffffff82800c42>] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 3766.508481][ C28] hardirqs last disabled at (88756): [<ffffffff8277e45a>] sysvec_apic_timer_interrupt+0xa/0xa0 [ 3766.518665][ C28] softirqs last enabled at (88748): [<ffffffff82a0061b>] __do_softirq+0x61b/0x95d [ 3766.527805][ C28] softirqs last disabled at (88743): [<ffffffff82800ec2>] asm_call_irq_on_stack+0x12/0x20 [ 3766.537550][ C28] CPU: 28 PID: 1058 Comm: mount Tainted: G L 5.10.0-rc2-next-20201109+ #2 [ 3766.547210][ C28] Hardware name: Dell Inc. PowerEdge R6415/07YXFK, BIOS 1.9.3 06/25/2019 [ 3766.555482][ C28] RIP: 0010:prepend_path.isra.6+0x349/0xdb0 __seqprop_spinlock_sequence at include/linux/seqlock.h:277 (inlined by) read_seqbegin at include/linux/seqlock.h:838 (inlined by) read_seqbegin_or_lock at include/linux/seqlock.h:1142 (inlined by) read_seqbegin_or_lock at include/linux/seqlock.h:1139 (inlined by) prepend_path at fs/d_path.c:99 [ 3766.561241][ C28] Code: 95 f0 fe ff ff 5a 41 54 9d 41 0f b6 55 00 84 d2 74 09 80 fa 03 0f 8e 75 09 00 00 45 8b 26 41 f6 c4 01 0f 84 5b 05 00 00 f3 90 <41> 0f b6 55 00 84 d2 74 e8 80 fa 03 7f e3 4c 89 f7 4ce [ 3766.580687][ C28] RSP: 0018:ffffc9000670fa18 EFLAGS: 00000202 [ 3766.586618][ C28] RAX: ffff88812bd7d070 RBX: dffffc0000000000 RCX: 1ffff1102a164dc8 [ 3766.594449][ C28] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81bafabb [ 3766.602287][ C28] RBP: ffffc9000670fb68 R08: 0000000000000001 R09: ffffffff81bb033d [ 3766.610118][ C28] R10: ffff8881517d8340 R11: fffffbfff14b86e4 R12: 000000000000039d [ 3766.617956][ C28] R13: fffffbfff06426b0 R14: ffffffff83213580 R15: ffffc9000670fbc0 [ 3766.625789][ C28] FS: 00007f96bb7a6080(0000) GS:ffff8881b71c0000(0000) knlGS:0000000000000000 [ 3766.634579][ C28] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3766.641026][ C28] CR2: 00007f96ba7343f0 CR3: 0000000146c76000 CR4: 00000000003506e0 [ 3766.648859][ C28] Call Trace: [ 3766.652016][ C28] ? dentry_path_raw+0x10/0x10 [ 3766.656645][ C28] ? rcu_read_unlock+0x40/0x40 [ 3766.661276][ C28] ? memcpy+0x38/0x60 [ 3766.665128][ C28] d_path+0x3fd/0x660 [ 3766.668976][ C28] ? prepend_path.isra.6+0xdb0/0xdb0 [ 3766.674129][ C28] ? __alloc_pages_nodemask+0x650/0x760 [ 3766.679543][ C28] ? __alloc_pages_slowpath.constprop.112+0x2120/0x2120 [ 3766.686345][ C28] mnt_warn_timestamp_expiry+0x25a/0x270 mnt_warn_timestamp_expiry at fs/namespace.c:2555 (discriminator 1) [ 3766.691839][ C28] ? get_mountpoint+0x370/0x370 [ 3766.696554][ C28] ? do_raw_spin_unlock+0x4f/0x250 [ 3766.701536][ C28] ? _raw_spin_unlock+0x1a/0x30 [ 3766.706253][ C28] ? vfs_create_mount+0x371/0x4a0 [ 3766.711150][ C28] path_mount+0xe6b/0x1720 do_new_mount_fc at fs/namespace.c:2839 (inlined by) do_new_mount at fs/namespace.c:2898 (inlined by) path_mount at fs/namespace.c:3227 [ 3766.715438][ C28] ? finish_automount+0x750/0x750 [ 3766.720328][ C28] ? getname_flags+0x88/0x3e0 [ 3766.724877][ C28] do_mount+0xc6/0xe0 [ 3766.728726][ C28] ? path_mount+0x1720/0x1720 [ 3766.733275][ C28] ? _copy_from_user+0xab/0xf0 [ 3766.737906][ C28] ? memdup_user+0x4f/0x80 [ 3766.742193][ C28] __x64_sys_mount+0x15d/0x1b0 [ 3766.746828][ C28] do_syscall_64+0x33/0x40 [ 3766.751111][ C28] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3914.819439][ C36] watchdog: BUG: soft lockup - CPU#36 stuck for 22s! [systemd-journal:902] [ 3914.827884][ C36] Modules linked in: acpi_cpufreq(+) ip_tables x_tables sd_mod ahci libahci tg3 bnxt_en megaraid_sas libata firmware_class libphy dm_mirror dm_region_hash dm_log dm_mod [ 3914.844543][ C36] irq event stamp: 196688 [ 3914.848748][ C36] hardirqs last enabled at (196687): [<ffffffff82800c42>] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 3914.859450][ C36] hardirqs last disabled at (196688): [<ffffffff8277e45a>] sysvec_apic_timer_interrupt+0xa/0xa0 [ 3914.869709][ C36] softirqs last enabled at (196684): [<ffffffff82a0061b>] __do_softirq+0x61b/0x95d [ 3914.878930][ C36] softirqs last disabled at (196679): [<ffffffff82800ec2>] asm_call_irq_on_stack+0x12/0x20 [ 3914.888759][ C36] CPU: 36 PID: 902 Comm: systemd-journal Tainted: G L 5.10.0-rc2-next-20201109+ #2 [ 3914.899195][ C36] Hardware name: Dell Inc. PowerEdge R6415/07YXFK, BIOS 1.9.3 06/25/2019 [ 3914.907471][ C36] RIP: 0010:path_init+0x1f3/0x1380 [ 3914.912448][ C36] Code: 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 48 01 c1 f3 90 0f b6 01 84 c0 74 08 3c 03 0f 8e 9a 0d 00 00 44 8b 3a 41 f6 c7 01 <75> e6 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 44 48 89a [ 3914.931901][ C36] RSP: 0018:ffffc900065dfc08 EFLAGS: 00000202 [ 3914.937837][ C36] RAX: 0000000000000000 RBX: ffffc900065dfd40 RCX: fffffbfff06426b0 [ 3914.945675][ C36] RDX: ffffffff83213580 RSI: 00000000d93ef353 RDI: ffffc900065dfd80 [ 3914.953514][ C36] RBP: ffffc900065dfc98 R08: fffffbfff164cb0d R09: fffffbfff164cb0d [ 3914.961349][ C36] R10: 0000000000000246 R11: fffffbfff164cb0c R12: ffff8881159d5920 [ 3914.969186][ C36] R13: ffffc900065dfd78 R14: 0000000000000041 R15: 000000000000039d [ 3914.977028][ C36] FS: 00007fc5f95f9980(0000) GS:ffff8881b7240000(0000) knlGS:0000000000000000 [ 3914.985814][ C36] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3914.992262][ C36] CR2: 000055ea2994ba42 CR3: 000000013702a000 CR4: 00000000003506e0 [ 3915.000097][ C36] Call Trace: [ 3915.003257][ C36] path_lookupat.isra.61+0x20/0x440 [ 3915.008323][ C36] ? find_held_lock+0x33/0x1c0 [ 3915.012954][ C36] filename_lookup.part.73+0x15c/0x290 [ 3915.018283][ C36] ? __might_fault+0xb5/0x160 [ 3915.022831][ C36] ? do_symlinkat+0x190/0x190 [ 3915.027375][ C36] ? strncpy_from_user+0x6b/0x330 [ 3915.032268][ C36] ? getname_flags+0x88/0x3e0 [ 3915.036809][ C36] ? kmem_cache_alloc+0x244/0x270 [ 3915.041701][ C36] do_faccessat+0xc0/0x5a0 [ 3915.045987][ C36] ? stream_open+0x60/0x60 [ 3915.050269][ C36] do_syscall_64+0x33/0x40 [ 3915.054552][ C36] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3915.060306][ C36] RIP: 0033:0x7fc5f862697b [ 3915.064590][ C36] Code: 77 05 c3 0f 1f 40 00 48 8b 15 09 f5 2c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 0f 1f 40 00 f3 0f 1e fa b8 15 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 d9 f48 [ 3915.084044][ C36] RSP: 002b:00007ffdefba1198 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 3915.092322][ C36] RAX: ffffffffffffffda RBX: 00007ffdefba3cf0 RCX: 00007fc5f862697b [ 3915.100163][ C36] RDX: 00007fc5f91032e8 RSI: 0000000000000000 RDI: 0000556a2401c0d0 [ 3915.107996][ C36] RBP: 00007ffdefba11e0 R08: 0000000000000000 R09: 0000000000000000 [ 3915.115832][ C36] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 3915.123667][ C36] R13: 0000000000000000 R14: 0000000000000009 R15: 0000556a254de950 [ 3917.159439][ C0] watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [systemd:1] [ 3917.166926][ C0] Modules linked in: acpi_cpufreq(+) ip_tables x_tables sd_mod ahci libahci tg3 bnxt_en megaraid_sas libata firmware_class libphy dm_mirror dm_region_hash dm_log dm_mod [ 3917.183572][ C0] irq event stamp: 94238206 [ 3917.187944][ C0] hardirqs last enabled at (94238205): [<ffffffff82800b9e>] asm_common_interrupt+0x1e/0x40 [ 3917.197857][ C0] hardirqs last disabled at (94238206): [<ffffffff8277e45a>] sysvec_apic_timer_interrupt+0xa/0xa0 [ 3917.208289][ C0] softirqs last enabled at (94219940): [<ffffffff82a0061b>] __do_softirq+0x61b/0x95d [ 3917.217685][ C0] softirqs last disabled at (94219881): [<ffffffff82800ec2>] asm_call_irq_on_stack+0x12/0x20 [ 3917.227688][ C0] CPU: 0 PID: 1 Comm: systemd Tainted: G L 5.10.0-rc2-next-20201109+ #2 [ 3917.237167][ C0] Hardware name: Dell Inc. PowerEdge R6415/07YXFK, BIOS 1.9.3 06/25/2019 [ 3917.245437][ C0] RIP: 0010:lock_acquire+0x21b/0x820 [ 3917.250585][ C0] Code: fc ff df 48 01 c3 c7 03 00 00 00 00 c7 43 08 00 00 00 00 48 8b 84 24 90 00 00 00 65 48 33 04 25 28 00 00 00 0f 85 1a 05 00 00 <48> 81 c4 98 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3c [ 3917.270033][ C0] RSP: 0018:ffffc9000006f9f8 EFLAGS: 00000246 [ 3917.275959][ C0] RAX: 0000000000000000 RBX: fffff5200000df42 RCX: 1ffff9200000df28 [ 3917.283795][ C0] RDX: 1ffff11020645769 RSI: 00000000ffffffff RDI: 0000000000000001 [ 3917.291627][ C0] RBP: 0000000000000001 R08: fffffbfff164cb10 R09: fffffbfff164cb10 [ 3917.299463][ C0] R10: 0000000000000246 R11: fffffbfff164cb0f R12: ffff88812be555b0 [ 3917.307297][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 3917.315133][ C0] FS: 00007f12bb8c59c0(0000) GS:ffff8881b7000000(0000) knlGS:0000000000000000 [ 3917.323921][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3917.330368][ C0] CR2: 00007f0c2d828fd0 CR3: 000000011868a000 CR4: 00000000003506f0 [ 3917.338202][ C0] Call Trace: [ 3917.341360][ C0] ? rcu_read_unlock+0x40/0x40 [ 3917.345987][ C0] __d_move+0x2a2/0x16f0 [ 3917.350096][ C0] ? d_move+0x47/0x70 [ 3917.353944][ C0] ? _raw_spin_unlock+0x1a/0x30 [ 3917.358656][ C0] d_move+0x47/0x70 [ 3917.362330][ C0] ? vfs_rename+0x9ac/0x1270 [ 3917.366786][ C0] vfs_rename+0x9ac/0x1270 [ 3917.371068][ C0] ? vfs_link+0x830/0x830 [ 3917.375261][ C0] ? do_renameat2+0x58c/0x930 [ 3917.379804][ C0] do_renameat2+0x58c/0x930 [ 3917.384173][ C0] ? __ia32_sys_link+0x80/0x80 [ 3917.388800][ C0] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 3917.393948][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 3917.399354][ C0] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 3917.404503][ C0] ? lockdep_hardirqs_on_prepare+0x27c/0x3d0 [ 3917.410346][ C0] ? trace_hardirqs_on+0x1c/0x150 [ 3917.415234][ C0] ? asm_common_interrupt+0x1e/0x40 [ 3917.420294][ C0] ? strncpy_from_user+0x14c/0x330 [ 3917.425269][ C0] ? strncpy_from_user+0x6b/0x330 [ 3917.430158][ C0] ? getname_flags+0x88/0x3e0 [ 3917.434699][ C0] __x64_sys_rename+0x75/0x90 [ 3917.439239][ C0] do_syscall_64+0x33/0x40 [ 3917.443520][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3917.449274][ C0] RIP: 0033:0x7f12b9b759eb [ 3917.453557][ C0] Code: e8 5a 0a 08 00 85 c0 0f 95 c0 0f b6 c0 f7 d8 5b c3 66 0f 1f 44 00 00 b8 ff ff ff ff 5b c3 90 f3 0f 1e fa b8 52 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 69 e48 [ 3917.473003][ C0] RSP: 002b:00007fff76252538 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 3917.481272][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f12b9b759eb [ 3917.489107][ C0] RDX: 000055ea2997f400 RSI: 00007fff76252570 RDI: 000055ea2997f450 [ 3917.496942][ C0] RBP: 00007fff76252570 R08: 0000000000000000 R09: 0000000065732e32 [ 3917.504776][ C0] R10: 0000000000000003 R11: 0000000000000246 R12: 000055ea2996fcf8 [ 3917.512610][ C0] R13: 000055ea2996fcf8 R14: 000055ea277097f0 R15: 0000000000000000 [ 3634.443982][ C37] NMI backtrace for cpu 37 [ 3634.443984][ C37] CPU: 37 PID: 906 Comm: udevadm Tainted: G L 5.10.0-rc2-next-20201109+ #3 [ 3634.443986][ C37] Hardware name: Dell Inc. PowerEdge R6415/07YXFK, BIOS 1.9.3 06/25/2019 [ 3634.443987][ C37] RIP: 0010:io_serial_in+0x5c/0x90 [ 3634.443989][ C37] Code: 48 8d 7b 40 0f b6 8b f1 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e6 80 3c 02 00 75 1e 03 73 40 89 f2 ec <48> 83 c4 08 0f b6 c0 5b c3 89 74 24 04 e8 d2 90 81 ff4 [ 3634.443991][ C37] RSP: 0018:ffffc90004a38780 EFLAGS: 00000002 [ 3634.443993][ C37] RAX: dffffc0000000000 RBX: ffffffffa0b1c988 RCX: 0000000000000000 [ 3634.443995][ C37] RDX: 00000000000002fd RSI: 00000000000002fd RDI: ffffffffa0b1c9c8 [ 3634.443996][ C37] RBP: 0000000000000020 R08: 0000000000000004 R09: fffff520009470f3 [ 3634.443998][ C37] R10: 0000000000000003 R11: fffff520009470f3 R12: fffffbfff4163984 [ 3634.443999][ C37] R13: fffffbfff416393b R14: ffffffffa0b1c9d8 R15: ffffffffa0b1c988 [ 3634.444001][ C37] FS: 00007f6947084980(0000) GS:ffff88866e440000(0000) knlGS:0000000000000000 [ 3634.444002][ C37] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3634.444004][ C37] CR2: 00007fd220b94816 CR3: 000000015371e000 CR4: 00000000003506e0 [ 3634.444005][ C37] Call Trace: [ 3634.444006][ C37] <IRQ> [ 3634.444007][ C37] wait_for_xmitr+0x7c/0x1b0 [ 3634.444008][ C37] ? wait_for_xmitr+0x1b0/0x1b0 [ 3634.444010][ C37] serial8250_console_putchar+0x11/0x50 [ 3634.444011][ C37] uart_console_write+0x39/0xc0 [ 3634.444012][ C37] serial8250_console_write+0x74c/0x8a0 [ 3634.444013][ C37] ? serial8250_start_tx+0x810/0x810 [ 3634.444015][ C37] ? rcu_read_unlock+0x40/0x40 [ 3634.444016][ C37] ? do_raw_spin_lock+0x121/0x290 [ 3634.444017][ C37] ? rwlock_bug.part.1+0x90/0x90 [ 3634.444018][ C37] ? prb_read_valid+0x61/0x90 [ 3634.444020][ C37] ? prb_final_commit+0x10/0x10 [ 3634.444021][ C37] console_unlock+0x721/0xa20 [ 3634.444022][ C37] ? do_syslog.part.22+0x5d0/0x5d0 [ 3634.444023][ C37] ? lock_acquire+0x1c8/0x820 [ 3634.444024][ C37] ? lock_downgrade+0x700/0x700 [ 3634.444026][ C37] vprintk_emit+0x201/0x2c0 [ 3634.444027][ C37] printk+0x9a/0xc0 [ 3634.444028][ C37] ? record_print_text.cold.38+0x11/0x11 [ 3634.444029][ C37] ? __module_text_address+0xe/0x140 [ 3634.444031][ C37] ? nmi_cpu_backtrace.cold.10+0x18/0xc5 [ 3634.444032][ C37] show_trace_log_lvl+0x228/0x2bb [ 3634.444033][ C37] ? nmi_cpu_backtrace.cold.10+0x18/0xc5 [ 3634.444035][ C37] ? nmi_cpu_backtrace.cold.10+0x18/0xc5 [ 3634.444036][ C37] ? lapic_can_unplug_cpu+0x11/0x70 [ 3634.444037][ C37] dump_stack+0x99/0xcb [ 3634.444038][ C37] nmi_cpu_backtrace.cold.10+0x18/0xc5 [ 3634.444040][ C37] ? lapic_can_unplug_cpu+0x70/0x70 [ 3634.444041][ C37] nmi_trigger_cpumask_backtrace+0x232/0x2a0 [ 3634.444042][ C37] rcu_dump_cpu_stacks+0x1ad/0x1f9 [ 3634.444043][ C37] rcu_sched_clock_irq.cold.90+0x4f7/0x968 [ 3634.444045][ C37] ? tick_sched_do_timer+0x140/0x140 [ 3634.444046][ C37] update_process_times+0x75/0xb0 [ 3634.444047][ C37] tick_sched_timer+0xc8/0xf0 [ 3634.444048][ C37] __hrtimer_run_queues+0x529/0xbb0 [ 3634.444050][ C37] ? enqueue_hrtimer+0x330/0x330 [ 3634.444051][ C37] ? ktime_get_update_offsets_now+0xd6/0x2b0 [ 3634.444052][ C37] hrtimer_interrupt+0x2c2/0x750 [ 3634.444054][ C37] __sysvec_apic_timer_interrupt+0x13c/0x520 [ 3634.444055][ C37] asm_call_irq_on_stack+0x12/0x20 [ 3634.444056][ C37] </IRQ> [ 3634.444057][ C37] sysvec_apic_timer_interrupt+0x85/0xa0 [ 3634.444059][ C37] asm_sysvec_apic_timer_interrupt+0x12/0x20 ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v3 19/35] x86/io_apic: Cleanup trigger/polarity helpers 2020-11-10 6:31 ` [PATCH v3 19/35] x86/io_apic: Cleanup trigger/polarity helpers Qian Cai @ 2020-11-10 8:59 ` David Woodhouse 2020-11-10 16:26 ` Paolo Bonzini 0 siblings, 1 reply; 3+ messages in thread From: David Woodhouse @ 2020-11-10 8:59 UTC (permalink / raw) To: Qian Cai, x86, Thomas Gleixner, Tom Murphy Cc: kvm, iommu, joro, Paolo Bonzini, linux-kernel, linux-hyperv, maz, Dexuan Cui, Stephen Rothwell, Linux Next Mailing List [-- Attachment #1: Type: text/plain, Size: 2135 bytes --] On Tue, 2020-11-10 at 01:31 -0500, Qian Cai wrote: > On Sat, 2020-10-24 at 22:35 +0100, David Woodhouse wrote: > > From: Thomas Gleixner <tglx@linutronix•de> > > > > 'trigger' and 'polarity' are used throughout the I/O-APIC code for handling > > the trigger type (edge/level) and the active low/high configuration. While > > there are defines for initializing these variables and struct members, they > > are not used consequently and the meaning of 'trigger' and 'polarity' is > > opaque and confusing at best. > > > > Rename them to 'is_level' and 'active_low' and make them boolean in various > > structs so it's entirely clear what the meaning is. > > > > Signed-off-by: Thomas Gleixner <tglx@linutronix•de> > > Signed-off-by: David Woodhouse <dwmw@amazon•co.uk> > > --- > > arch/x86/include/asm/hw_irq.h | 6 +- > > arch/x86/kernel/apic/io_apic.c | 244 +++++++++++++--------------- > > arch/x86/pci/intel_mid_pci.c | 8 +- > > drivers/iommu/amd/iommu.c | 10 +- > > drivers/iommu/intel/irq_remapping.c | 9 +- > > 5 files changed, 130 insertions(+), 147 deletions(-) > > Reverting the rest of patchset up to this commit on next-20201109 fixed an > endless soft-lockups issue booting an AMD server below. I noticed that the > failed boots always has this IOMMU IO_PAGE_FAULT before those soft-lockups: Hm, attempting to reproduce this shows something else. Ever since commit be62dbf554c5 ("iommu/amd: Convert AMD iommu driver to the dma- iommu api") in 5.5 the following stops working for me: $ qemu-system-x86_64 -serial mon:stdio -kernel bzImage -machine q35,accel=kvm,kernel-irqchip=split -m 2G -device amd-iommu,intremap=off -append "console=ttyS0 apic=verbose debug" -display none It hasn't got a hard drive but I can watch the SATA interrupts fail as it probes the CD-ROM: [ 7.403327] ata3.00: qc timeout (cmd 0xa1) [ 7.405980] ata3.00: failed to IDENTIFY (I/O error, err_mask=0x4) Adding 'iommu=off' to the kernel command line makes it work again, in that it correctly panics at the lack of a root file system, quickly. [-- Attachment #2: smime.p7s --] [-- Type: application/x-pkcs7-signature, Size: 5174 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v3 19/35] x86/io_apic: Cleanup trigger/polarity helpers 2020-11-10 8:59 ` David Woodhouse @ 2020-11-10 16:26 ` Paolo Bonzini 0 siblings, 0 replies; 3+ messages in thread From: Paolo Bonzini @ 2020-11-10 16:26 UTC (permalink / raw) To: David Woodhouse, Qian Cai, x86, Thomas Gleixner, Tom Murphy Cc: kvm, iommu, joro, linux-kernel, linux-hyperv, maz, Dexuan Cui, Stephen Rothwell, Linux Next Mailing List On 10/11/20 09:59, David Woodhouse wrote: > Hm, attempting to reproduce this shows something else. Ever since > commit be62dbf554c5 ("iommu/amd: Convert AMD iommu driver to the dma- > iommu api") in 5.5 the following stops working for me: > > $ qemu-system-x86_64 -serial mon:stdio -kernel bzImage -machine q35,accel=kvm,kernel-irqchip=split -m 2G -device amd-iommu,intremap=off -append "console=ttyS0 apic=verbose debug" -display none > > It hasn't got a hard drive but I can watch the SATA interrupts fail as > it probes the CD-ROM: > > [ 7.403327] ata3.00: qc timeout (cmd 0xa1) > [ 7.405980] ata3.00: failed to IDENTIFY (I/O error, err_mask=0x4) > > Adding 'iommu=off' to the kernel command line makes it work again, in > that it correctly panics at the lack of a root file system, quickly. That might well be a QEMU bug though, AMD emulation is kinda experimental. Paolo ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-11-10 16:26 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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[not found] ` <20201024213535.443185-1-dwmw2@infradead.org>
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2020-11-10 6:31 ` [PATCH v3 19/35] x86/io_apic: Cleanup trigger/polarity helpers Qian Cai
2020-11-10 8:59 ` David Woodhouse
2020-11-10 16:26 ` Paolo Bonzini
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