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pkg/report: add compat ioctl stall anchor frames

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Add new __ia32_compat_sys_ioctl anchor frame
(something seems to have been changed in compat ioctl's).
Also skip all compat_ioctl frames, it's pretty common naming
convention and it may help to avoid some dups across
compat/non-compat paths.
This commit is contained in:
Dmitry Vyukov 2020-04-19 09:31:02 +02:00
parent 5602faa9ba
commit 20ed497b52
4 changed files with 56 additions and 2 deletions
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2
pkg/report/linux.go
View File

@ -653,6 +653,8 @@ var linuxStallAnchorFrames = []*regexp.Regexp{
compile("do_iter_write"),
compile("vfs_ioctl"),
compile("ksys_ioctl"), // vfs_ioctl may be inlined
compile("compat_ioctl"),
compile("compat_sys_ioctl"),
compile("blkdev_driver_ioctl"),
compile("blkdev_ioctl"),
compile("^call_read_iter"),

2
pkg/report/testdata/linux/report/294 vendored
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@ -1,4 +1,4 @@
TITLE: INFO: rcu detected stall in lo_compat_ioctl
TITLE: INFO: rcu detected stall in lo_ioctl
TYPE: HANG
[ 480.801028] INFO: rcu_sched self-detected stall on CPU

2
pkg/report/testdata/linux/report/368 vendored
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@ -1,4 +1,4 @@
TITLE: INFO: rcu detected stall in kvm_vm_compat_ioctl
TITLE: INFO: rcu detected stall in kvm_vm_ioctl
TYPE: HANG
[ 804.522871] INFO: rcu_sched self-detected stall on CPU

52
pkg/report/testdata/linux/report/483 vendored Normal file
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@ -0,0 +1,52 @@
TITLE: INFO: rcu detected stall in kvm_vcpu_ioctl
TYPE: HANG
[ 1637.979990][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 1637.986979][ C1] (detected by 1, t=15605 jiffies, g=262821, q=17998)
[ 1637.993848][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 15605 (4295100946-4295085341), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 1638.007218][ C1] syz-executor.1 R running task 26168 15610 7212 0x20020008
[ 1638.015177][ C1] Call Trace:
[ 1638.018466][ C1] <IRQ>
[ 1638.021415][ C1] sched_show_task.cold+0x2e2/0x343
[ 1638.043050][ C1] rcu_sched_clock_irq.cold+0xb9b/0xcfa
[ 1638.048625][ C1] update_process_times+0x25/0x60
[ 1638.053662][ C1] tick_sched_handle+0x9b/0x180
[ 1638.058558][ C1] tick_sched_timer+0x4e/0x140
[ 1638.063350][ C1] __hrtimer_run_queues+0x5ca/0xed0
[ 1638.090039][ C1] hrtimer_interrupt+0x312/0x770
[ 1638.095150][ C1] smp_apic_timer_interrupt+0x15b/0x600
[ 1638.100715][ C1] apic_timer_interrupt+0xf/0x20
[ 1638.105657][ C1] </IRQ>
[ 1638.108701][ C1] RIP: 0010:preempt_schedule_irq+0xa6/0x150
[ 1638.114601][ C1] Code: 00 00 e8 9d fc 7f f9 e8 88 97 a9 f9 4c 89 e8 48 c1 e8 03 80 3c 18 00 75 7a 48 83 3d 23 a6 c5 01 00 74 6c fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 60 d1 ff ff 48 c7 c0 28 c2 94 89 48 c1 e8 03 80
[ 1638.134245][ C1] RSP: 0018:ffffc90004bff8d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 1638.142679][ C1] RAX: 1ffffffff1329846 RBX: dffffc0000000000 RCX: 1ffffffff186a0ec
[ 1638.150781][ C1] RDX: 0000000000000000 RSI: ffff88805376ecb0 RDI: ffff88805376ec84
[ 1638.158778][ C1] RBP: ffffed100a6edc78 R08: 0000000000000001 R09: fffffbfff185cd61
[ 1638.166781][ C1] R10: ffffffff8c2e6b07 R11: fffffbfff185cd60 R12: ffff88805376e3c0
[ 1638.174773][ C1] R13: ffffffff8994c230 R14: 0000000000000000 R15: 0000000000000000
[ 1638.182792][ C1] retint_kernel+0x1b/0x2b
[ 1638.187321][ C1] RIP: 0010:lock_acquire+0x267/0x8f0
[ 1638.192719][ C1] Code: 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 c6 05 00 00 48 83 3d d5 3b 3b 08 00 0f 84 65 04 00 00 48 8b 3c 24 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 08 48 c7
[ 1638.212339][ C1] RSP: 0018:ffffc90004bff9a0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02
[ 1638.220769][ C1] RAX: 1ffffffff1329844 RBX: ffff88805376e3c0 RCX: ffffffff81592eeb
[ 1638.228758][ C1] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000282
[ 1638.236743][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff185cd61
[ 1638.244727][ C1] R10: ffffffff8c2e6b07 R11: fffffbfff185cd60 R12: 0000000000000002
[ 1638.252709][ C1] R13: ffffc90005002fc8 R14: 0000000000000000 R15: 0000000000000000
[ 1638.280224][ C1] vcpu_enter_guest+0x21d2/0x59d0
[ 1638.318650][ C1] kvm_arch_vcpu_ioctl_run+0x3fb/0x16e0
[ 1638.324232][ C1] kvm_vcpu_ioctl+0x493/0xe60
[ 1638.361448][ C1] kvm_vcpu_compat_ioctl+0x1ab/0x350
[ 1638.381636][ C1] __ia32_compat_sys_ioctl+0x23d/0x2b0
[ 1638.387117][ C1] do_fast_syscall_32+0x270/0xe90
[ 1638.392136][ C1] entry_SYSENTER_compat+0x70/0x7f
[ 1638.397249][ C1] rcu: rcu_preempt kthread starved for 15605 jiffies! g262821 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 1638.408519][ C1] rcu: RCU grace-period kthread stack dump:
[ 1638.414411][ C1] rcu_preempt R running task 28848 10 2 0x80004000
[ 1638.422304][ C1] Call Trace:
[ 1638.445941][ C1] schedule+0xd0/0x2a0
[ 1638.450013][ C1] schedule_timeout+0x35c/0x850
[ 1638.486495][ C1] rcu_gp_kthread+0x9bf/0x1960
[ 1638.516704][ C1] kthread+0x388/0x470
[ 1638.526517][ C1] ret_from_fork+0x24/0x30