Assertion 'desc->arch.creator_domid == DOMID_INVALID' failed

[Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

Hi,

When debugging CI job on Linus' master branch, I added "console=vga vga=,keep" 
and got PV dom0 crash Xen with:

(XEN) [   40.870435] Assertion 'desc->arch.creator_domid == DOMID_INVALID' 
failed at arch/x86/irq.c:294
(XEN) [   40.886925] ----[ Xen-4.21-unstable  x86_64  debug=y ubsan=y  Not 
tainted ]----
(XEN) [   40.903356] CPU:    10
(XEN) [   40.919824] RIP:    e008:[<ffff82d04059d2ed>] create_irq+0x272/0x339
(XEN) [   40.936267] RFLAGS: 0000000000010297   CONTEXT: hypervisor (d0v13)
(XEN) [   40.952709] rax: 00000000fffffff4   rbx: ffff830498007c00   rcx: 
0000000000001899
(XEN) [   40.969147] rdx: ffff830498007c5e   rsi: 0000000000000002   rdi: 
ffff83049830e398
(XEN) [   40.985892] rbp: ffff830498307d18   rsp: ffff830498307ce8   r8:  
0000000000000000
(XEN) [   41.003093] r9:  0000000000000000   r10: 0000000000000000   r11: 
0000000000000000
(XEN) [   41.020279] r12: 00000000fffffff4   r13: 000000000000007c   r14: 
ffffffffffffffff
(XEN) [   41.037489] r15: 000000000000007c   cr0: 0000000080050033   cr4: 
0000000000b526e0
(XEN) [   41.054699] cr3: 0000000492c34000   cr2: ffff8881001603f0
(XEN) [   41.071904] fsb: 0000000000000000   gsb: ffff8882365ac000   gss: 
0000000000000000
(XEN) [   41.089116] ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e010   cs: 
e008
(XEN) [   41.106320] Xen code around <ffff82d04059d2ed> 
(create_irq+0x272/0x339):
(XEN) [   41.123521]  3f d9 ff e9 cc fe ff ff <0f> 0b 48 8d 3d 5a a0 29 00 e8 
f4 3d d9 ff c6 43
(XEN) [   41.140739] Xen stack trace from rsp=ffff830498307ce8:
(XEN) [   41.157931]    000000ff00000001 ffff830497faa000 ffff830498307e00 
00000000ffffffff
(XEN) [   41.175132]    0000000000010000 ffff830497faa160 ffff830498307d70 
ffff82d0405a6f85
(XEN) [   41.192351]    00000000000002a0 ffff830498307e24 0000000000000200 
00000000ffffffff
(XEN) [   41.209551]    ffff830497faa000 0000000000000000 ffff830497faa168 
0000000000010000
(XEN) [   41.226753]    ffff830497faa160 ffff830498307de0 ffff82d0405c9ea6 
5f24a0ddbbeda194
(XEN) [   41.244062]    ffff830498307e10 0000000000000000 0000000000000001 
ffff830498307e00
(XEN) [   41.261387]    ffff830498307e24 ffff830498307e20 ffff830497faa000 
ffff830498307ef8
(XEN) [   41.278730]    ffff830497faa000 ffff830497f5a000 ffffc9004002ba78 
ffff830498307e68
(XEN) [   41.296052]    ffff82d0405cbd4f ffff82d04053fc3e ffffc9004002ba78 
00000000000000a0
(XEN) [   41.313381]    00a0fb0000000001 0000000000000000 0000000000007ff0 
ffffffffffffffff
(XEN) [   41.330708]    000000a000000000 0000000000000000 0000000000000000 
ffff830498307ef8
(XEN) [   41.348026]    ffff830497f5a000 0000000000000021 0000000000000000 
ffffc9004002ba78
(XEN) [   41.365357]    ffff830498307ee8 ffff82d0405427db ffff8881d6961b40 
0000000000000001
(XEN) [   41.382680]    000000a000000000 000000000000000d 0000000000000000 
ffff830498307ee8
(XEN) [   41.400003]    ffff82d0405e7bc2 ffff830497f5a000 0000000000000000 
ffff830497f5a000
(XEN) [   41.417343]    0000000000000000 0000000000000000 ffff830498307fff 
0000000000000000
(XEN) [   41.434674]    00007cfb67cf80e7 ffff82d0402012d3 ffff8881d6961b40 
ffff888100ef30c0
(XEN) [   41.452010]    0000000000000001 0000000000000005 0000000000000000 
ffff888100ef3000
(XEN) [   41.469342]    0000000000000202 0000000000000001 0000000000007ff0 
ffff8881d6961b40
(XEN) [   41.486681]    0000000000000021 ffffffff8229d355 000000a000000000 
ffffc9004002ba78
(XEN) [   41.504015] Xen call trace:
(XEN) [   41.521314]    [<ffff82d04059d2ed>] R create_irq+0x272/0x339
(XEN) [   41.538636]    [<ffff82d0405a6f85>] F 
allocate_and_map_msi_pirq+0x51/0x5ec
(XEN) [   41.555960]    [<ffff82d0405c9ea6>] F physdev_map_pirq+0xbf6/0xd30
(XEN) [   41.573282]    [<ffff82d0405cbd4f>] F do_physdev_op+0x1373/0x2c4c
(XEN) [   41.590618]    [<ffff82d0405427db>] F pv_hypercall+0x6be/0x838
(XEN) [   41.607947]    [<ffff82d0402012d3>] F lstar_enter+0x143/0x150
(XEN) [   41.625269] 
(XEN) [   41.836038] 
(XEN) [   41.854778] ****************************************
(XEN) [   41.877320] Panic on CPU 10:
(XEN) [   41.897494] Assertion 'desc->arch.creator_domid == DOMID_INVALID' 
failed at arch/x86/irq.c:294
(XEN) [   41.924180] ****************************************

I got it twice in a row already, so looks rather reliable. As you can
see by the timestamps, it's (expectedly) rather slow - I guess that's
relevant.

This is Xen staging from yesterday. It's on the ADL runner, haven't
tried this one on others yet.

Full console log at 
https://gist.github.com/marmarek/47d70eb68db03caff14dfbb936f9149b

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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