[Xen-devel] 4.8.5 too [Re: Xen 4.11.1 panic]

[Manuel Bouyer <bouyer@xxxxxxxxxxxxxxx>]

On Tue, Dec 18, 2018 at 11:19:04PM +0100, Manuel Bouyer wrote:
> Hello,
> I tried updating my NetBSD dom0 to 4.11.1 (from 4.11.0 with security patches),
> and on a 32bits PV domU shutdown I get (100% reproductible):

I get the same panic on 4.8.5. Also, I didn't mention it but there's
no problems with 64bits PV guests.

(XEN) Assertion 'preemptible' failed at mm.c:2593                           
(XEN) ----[ Xen-4.8.5nb0  x86_64  debug=y   Tainted:  C   ]----             
(XEN) CPU:    1                                                             
(XEN) RIP:    e008:[<ffff82d08017c66b>] free_page_type+0x23b/0x790          
(XEN) RFLAGS: 0000000000010246   CONTEXT: hypervisor (d0v0)                 
(XEN) rax: 2000000000000000   rbx: 2400000000000001   rcx: 2000000000000000 
(XEN) rdx: ffff830000000000   rsi: 2400000000000001   rdi: ffff82e004215260 
(XEN) rbp: ffff82e004215260   rsp: ffff83023704fad8   r8:  0000000000000000 
(XEN) r9:  0000000000000000   r10: ffff82e000000000   r11: 0000000000000001 
(XEN) r12: 0000000000000000   r13: ffff830213136000   r14: 007fffffffffffff
(XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 0000000000002660
(XEN) cr3: 000000022f0f6000   cr2: 00007f7ff60ce7a0
(XEN) fsb: 00007f7ff7ff27c0   gsb: ffffffff80ca42c0   gss: 0000000000000000
(XEN) ds: 003f   es: 003f   fs: 0000   gs: 0000   ss: e010   cs: e008
(XEN) Xen code around <ffff82d08017c66b> (free_page_type+0x23b/0x790):
(XEN)  05 00 00 45 85 e4 75 02 <0f> 0b 8b 45 18 85 c0 74 18 89 c0 48 c1 e0 0c 49
(XEN) Xen stack trace from rsp=ffff83023704fad8:
(XEN)    ffff82d08024c7fb ffff82d08014703d 2400000000000001 2400000000000001
(XEN)    ffff82e004215260 ffff82e004215240 007fffffffffffff 0000000000000000
(XEN)    ffff82d08017cc76 00ff82d08013133d ffff83023704ffff ffff82e004215260
(XEN)    ffff82e004215240 ffff830213136000 0000000000210a92 ffff820040002000
(XEN)    0200000000000000 ffff82d08017d6a7 00000000000001ff ffff82d08017c737
(XEN)    1000000000000000 ffff83023704ffff 2400000000000001 2400000000000001
(XEN)    ffff82e004215240 ffff82e004206ce0 007fffffffffffff 0000000000000001
(XEN)    ffff82d08017cc76 01ff830237044000 ffff83023704ffff ffff82e004215240
(XEN)    ffff82e004206ce0 0000000000000000 0000000000000000 ffff820040000010
(XEN)    ffff820040000000 ffff82d08017c400 0000000000000002 ffff82e004206ce0
(XEN)    0000000000000000 0000000000000000 ffff82d08017c89f 0000000000210367
(XEN)    ffff830213136000 3400000000000001 3400000000000001 ffff82e004206ce0
(XEN)    0000000000000000 007fffffffffffff 0000000000000001 ffff82d08017cc76
(XEN)    01ff82e004225fe0 ffff83023704ffff ffff82e004206ce0 ffff83023704fd10
(XEN)    ffff830213136028 ffff830213136000 ffff830213136020 ffff82e004206cf0
(XEN)    ffff82d08017d6ef ffff82d08016570b ffff82d08017d850 7400000000000001
(XEN)    ffff83023704ffff 4000000000000000 ffff830213136000 0000000000000000
(XEN)    0000000000000000 deadbeefdeadf00d 0000000000000001 ffff830213136020
(XEN)    ffff82d08016b4b3 ffff830213136000 00007f7ff7b2e004 ffff82d080106882
(XEN)    ffff830213136000 00007f7ff7b2e004 0000000000000000 ffff82d0801039ec
(XEN) Xen call trace:
(XEN)    [<ffff82d08017c66b>] free_page_type+0x23b/0x790
(XEN)    [<ffff82d08024c7fb>] common_interrupt+0x9b/0x120
(XEN)    [<ffff82d08014703d>] ns16550.c#ns16550_interrupt+0x5d/0x70
(XEN)    [<ffff82d08017cc76>] mm.c#_put_page_type+0xb6/0x2f0
(XEN)    [<ffff82d08017d6a7>] mm.c#put_page_from_l2e+0x197/0x1d0
(XEN)    [<ffff82d08017c737>] free_page_type+0x307/0x790
(XEN)    [<ffff82d08017cc76>] mm.c#_put_page_type+0xb6/0x2f0
(XEN)    [<ffff82d08017c400>] mm.c#put_page_from_l3e+0x1a0/0x1d0
(XEN)    [<ffff82d08017c89f>] free_page_type+0x46f/0x790
(XEN)    [<ffff82d08017cc76>] mm.c#_put_page_type+0xb6/0x2f0
(XEN)    [<ffff82d08017d6ef>] put_page_type_preemptible+0xf/0x10
(XEN)    [<ffff82d08016570b>] domain.c#relinquish_memory+0xab/0x450
(XEN)    [<ffff82d08017d850>] destroy_gdt+0x160/0x1b0
(XEN)    [<ffff82d08016b4b3>] domain_relinquish_resources+0x203/0x290
(XEN)    [<ffff82d080106882>] domain_kill+0x92/0x130
(XEN)    [<ffff82d0801039ec>] do_domctl+0x80c/0x1a70
(XEN)    [<ffff82d0801031e0>] do_domctl+0/0x1a70
(XEN)    [<ffff82d08016cb08>] pv_hypercall+0x208/0x420
(XEN)    [<ffff82d08024c432>] lstar_enter+0xa2/0x120
(XEN)    [<ffff82d08024c43e>] lstar_enter+0xae/0x120
(XEN)    [<ffff82d08024c432>] lstar_enter+0xa2/0x120
(XEN)    [<ffff82d08024c43e>] lstar_enter+0xae/0x120
(XEN)    [<ffff82d08024c432>] lstar_enter+0xa2/0x120
(XEN)    [<ffff82d08024c43e>] lstar_enter+0xae/0x120
(XEN)    [<ffff82d08024c4a0>] lstar_enter+0x110/0x120
(XEN)
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 1:
(XEN) Assertion 'preemptible' failed at mm.c:2593
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...

-- 
Manuel Bouyer <bouyer@xxxxxxxxxxxxxxx>
     NetBSD: 26 ans d'experience feront toujours la difference
--

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