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[Xen-devel] Issue with 5.3.8 kernel in a ArchLinux guest

  • To: xen-devel@xxxxxxxxxxxxx
  • From: Florijan Hamzic <florijanh@xxxxxxxxx>
  • Date: Fri, 8 Nov 2019 17:39:44 +0100
  • Delivery-date: Fri, 08 Nov 2019 16:45:06 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,

my machine recently crashes randomly. I found this thing in my logs before the crash happened:

Linux vserver1592 5.3.8-arch1-1 #1 SMP PREEMPT @1572357769 x86_64 GNU/Linux
Nov 08 06:32:34 vserver1592 kernel: ------------[ cut here ]------------
Nov 08 06:32:34 vserver1592 kernel: WARNING: CPU: 0 PID: 1131590 at arch/x86/xen/multicalls.c:102 xen_mc_flush+0x1e6/0x220
Nov 08 06:32:34 vserver1592 kernel: Modules linked in: veth xt_nat xt_tcpudp xt_conntrack xt_MASQUERADE nf_conntrack_netlink xfrm_user xfrm_algo xt_addrtype iptable_filter iptable_nat nf_nat br_netfilter bridge stp llc overlay nf_log_ipv6 nf_log_ipv4 nf_log_common nft_log nft_limit nft_ct nf_conntrack nf_defrag_ipv6>
Nov 08 06:32:34 vserver1592 kernel: CPU: 0 PID: 1131590 Comm: runc Tainted: G        W         5.3.8-arch1-1 #1
Nov 08 06:32:34 vserver1592 kernel: RIP: e030:xen_mc_flush+0x1e6/0x220
Nov 08 06:32:34 vserver1592 kernel: Code: 02 0f 84 74 fe ff ff 0f 0b e8 16 2c fe ff eb 8c 48 c7 45 18 ea ff ff ff 41 bd 01 00 00 00 48 c7 c7 30 d2 0a 82 e8 e8 bc 0d 00 <0f> 0b e8 23 d7 42 00 8b 55 00 44 89 ee 48 c7 c7 60 ff 0a 82 89 c1
Nov 08 06:32:34 vserver1592 kernel: RSP: e02b:ffffc900417a7a88 EFLAGS: 00010046
Nov 08 06:32:34 vserver1592 kernel: RAX: 0000000000000024 RBX: ffff8881f5c15300 RCX: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: RDX: 0000000000000000 RSI: ffff8881f5c17708 RDI: 00000000ffffffff
Nov 08 06:32:34 vserver1592 kernel: RBP: ffff8881f5c15300 R08: 00000000000087bb R09: 0000000000000001
Nov 08 06:32:34 vserver1592 kernel: R10: 0000000000000000 R11: 0000000000000001 R12: 000000008000000e
Nov 08 06:32:34 vserver1592 kernel: R13: 0000000000000013 R14: 0000000000000018 R15: 0000000000000020
Nov 08 06:32:34 vserver1592 kernel: FS:  0000000000000000(0000) GS:ffff8881f5c00000(0000) knlGS:0000000000000000
Nov 08 06:32:34 vserver1592 kernel: CS:  10000e030 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 08 06:32:34 vserver1592 kernel: CR2: 00007f0470000010 CR3: 000000000220a000 CR4: 0000000000042660
Nov 08 06:32:34 vserver1592 kernel: Call Trace:
Nov 08 06:32:34 vserver1592 kernel:  __xen_mc_entry+0x136/0x1b0
Nov 08 06:32:34 vserver1592 kernel:  xen_extend_mmuext_op+0x5c/0xf0
Nov 08 06:32:34 vserver1592 kernel:  xen_do_pin+0x59/0x90
Nov 08 06:32:34 vserver1592 kernel:  xen_unpin_page+0x169/0x180
Nov 08 06:32:34 vserver1592 kernel:  ? xen_dup_mmap+0x10/0x10
Nov 08 06:32:34 vserver1592 kernel:  __xen_pgd_walk+0x230/0x300
Nov 08 06:32:34 vserver1592 kernel:  ? xen_dup_mmap+0x10/0x10
Nov 08 06:32:34 vserver1592 kernel:  __xen_pgd_unpin+0xf7/0x270
Nov 08 06:32:34 vserver1592 kernel:  xen_exit_mmap+0x150/0x170
Nov 08 06:32:34 vserver1592 kernel:  exit_mmap+0x77/0x1b0
Nov 08 06:32:34 vserver1592 kernel:  mmput+0x49/0x100
Nov 08 06:32:34 vserver1592 kernel:  do_exit+0x2ad/0xb00
Nov 08 06:32:34 vserver1592 kernel:  do_group_exit+0x33/0xa0
Nov 08 06:32:34 vserver1592 kernel:  get_signal+0x136/0x8d0
Nov 08 06:32:34 vserver1592 kernel:  do_signal+0x43/0x680
Nov 08 06:32:34 vserver1592 kernel:  ? do_nanosleep+0xb7/0x180
Nov 08 06:32:34 vserver1592 kernel:  exit_to_usermode_loop+0xbe/0x110
Nov 08 06:32:34 vserver1592 kernel:  do_syscall_64+0x189/0x1c0
Nov 08 06:32:34 vserver1592 kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Nov 08 06:32:34 vserver1592 kernel: RIP: 0033:0x561579d38023
Nov 08 06:32:34 vserver1592 kernel: Code: Bad RIP value.
Nov 08 06:32:34 vserver1592 kernel: RSP: 002b:00007f0479f0cca0 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
Nov 08 06:32:34 vserver1592 kernel: RAX: fffffffffffffe00 RBX: 000000c000036a80 RCX: 0000561579d38023
Nov 08 06:32:34 vserver1592 kernel: RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c000036bc8
Nov 08 06:32:34 vserver1592 kernel: RBP: 00007f0479f0cce8 R08: 0000000000000000 R09: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000001
Nov 08 06:32:34 vserver1592 kernel: R13: 0000000000000000 R14: 000056157a0745fe R15: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: ---[ end trace aa1a39e6c9d34ccd ]---
Nov 08 06:32:34 vserver1592 kernel: 19 of 32 multicall(s) failed: cpu 0
Nov 08 06:32:34 vserver1592 kernel:   call  2: op=14 arg=[ffff888066f22000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  3: op=14 arg=[ffff8880ff5dd000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  4: op=14 arg=[ffff888003b19000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  6: op=14 arg=[ffff8880ff5c1000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  7: op=14 arg=[ffff8880ff691000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  8: op=14 arg=[ffff888066f6d000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 10: op=14 arg=[ffff888003a0b000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 12: op=14 arg=[ffff888066f46000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 14: op=14 arg=[ffff8880f8a7b000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 16: op=14 arg=[ffff8880ff447000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 18: op=14 arg=[ffff8880abdda000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 20: op=14 arg=[ffff8880bbb14000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 22: op=14 arg=[ffff8880f88da000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 23: op=14 arg=[ffff8880f8982000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 24: op=14 arg=[ffff8880f8b54000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 26: op=14 arg=[ffff8880f8872000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 28: op=14 arg=[ffff8880f8be7000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 30: op=14 arg=[ffff8880bb9ff000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 32: op=14 arg=[ffff888003bc2000] result=-16
Nov 08 06:32:34 vserver1592 kernel: ------------[ cut here ]------------
Nov 08 06:32:34 vserver1592 kernel: WARNING: CPU: 0 PID: 1131590 at arch/x86/xen/multicalls.c:102 xen_mc_flush+0x1e6/0x220
Nov 08 06:32:34 vserver1592 kernel: Modules linked in: veth xt_nat xt_tcpudp xt_conntrack xt_MASQUERADE nf_conntrack_netlink xfrm_user xfrm_algo xt_addrtype iptable_filter iptable_nat nf_nat br_netfilter bridge stp llc overlay nf_log_ipv6 nf_log_ipv4 nf_log_common nft_log nft_limit nft_ct nf_conntrack nf_defrag_ipv6>
Nov 08 06:32:34 vserver1592 kernel: CPU: 0 PID: 1131590 Comm: runc Tainted: G        W         5.3.8-arch1-1 #1
Nov 08 06:32:34 vserver1592 kernel: RIP: e030:xen_mc_flush+0x1e6/0x220
Nov 08 06:32:34 vserver1592 kernel: Code: 02 0f 84 74 fe ff ff 0f 0b e8 16 2c fe ff eb 8c 48 c7 45 18 ea ff ff ff 41 bd 01 00 00 00 48 c7 c7 30 d2 0a 82 e8 e8 bc 0d 00 <0f> 0b e8 23 d7 42 00 8b 55 00 44 89 ee 48 c7 c7 60 ff 0a 82 89 c1
Nov 08 06:32:34 vserver1592 kernel: RSP: e02b:ffffc900417a7bb8 EFLAGS: 00010046
Nov 08 06:32:34 vserver1592 kernel: RAX: 0000000000000024 RBX: ffffea00019bc880 RCX: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: RDX: 0000000000000000 RSI: 000000008000000c RDI: 00000000ffffffff
Nov 08 06:32:34 vserver1592 kernel: RBP: ffff8881f5c15300 R08: 00000000000087fb R09: 0000000000000001
Nov 08 06:32:34 vserver1592 kernel: R10: 0000000000000000 R11: 0000000000000001 R12: 000000008000000b
Nov 08 06:32:34 vserver1592 kernel: R13: 000000000000000d R14: 0000000000000000 R15: 0000000000000017
Nov 08 06:32:34 vserver1592 kernel: FS:  0000000000000000(0000) GS:ffff8881f5c00000(0000) knlGS:0000000000000000
Nov 08 06:32:34 vserver1592 kernel: CS:  10000e030 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 08 06:32:34 vserver1592 kernel: CR2: 0000561579d37ff9 CR3: 000000000220a000 CR4: 0000000000042660
Nov 08 06:32:34 vserver1592 kernel: Call Trace:
Nov 08 06:32:34 vserver1592 kernel:  __xen_pgd_unpin+0x106/0x270
Nov 08 06:32:34 vserver1592 kernel:  xen_exit_mmap+0x150/0x170
Nov 08 06:32:34 vserver1592 kernel:  exit_mmap+0x77/0x1b0
Nov 08 06:32:34 vserver1592 kernel:  mmput+0x49/0x100
Nov 08 06:32:34 vserver1592 kernel:  do_exit+0x2ad/0xb00
Nov 08 06:32:34 vserver1592 kernel:  do_group_exit+0x33/0xa0
Nov 08 06:32:34 vserver1592 kernel:  get_signal+0x136/0x8d0
Nov 08 06:32:34 vserver1592 kernel:  do_signal+0x43/0x680
Nov 08 06:32:34 vserver1592 kernel:  ? do_nanosleep+0xb7/0x180
Nov 08 06:32:34 vserver1592 kernel:  exit_to_usermode_loop+0xbe/0x110
Nov 08 06:32:34 vserver1592 kernel:  do_syscall_64+0x189/0x1c0
Nov 08 06:32:34 vserver1592 kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Nov 08 06:32:34 vserver1592 kernel: RIP: 0033:0x561579d38023
Nov 08 06:32:34 vserver1592 kernel: Code: Bad RIP value.
Nov 08 06:32:34 vserver1592 kernel: RSP: 002b:00007f0479f0cca0 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
Nov 08 06:32:34 vserver1592 kernel: RAX: fffffffffffffe00 RBX: 000000c000036a80 RCX: 0000561579d38023
Nov 08 06:32:34 vserver1592 kernel: RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c000036bc8
Nov 08 06:32:34 vserver1592 kernel: RBP: 00007f0479f0cce8 R08: 0000000000000000 R09: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000001
Nov 08 06:32:34 vserver1592 kernel: R13: 0000000000000000 R14: 000056157a0745fe R15: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: ---[ end trace aa1a39e6c9d34cce ]---
Nov 08 06:32:34 vserver1592 kernel: 13 of 23 multicall(s) failed: cpu 0
Nov 08 06:32:34 vserver1592 kernel:   call  2: op=14 arg=[ffff8880ff7f9000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  4: op=14 arg=[ffff8880f890a000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  6: op=14 arg=[ffff8880f8ae9000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call  8: op=14 arg=[ffff8880bb8c5000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 10: op=14 arg=[ffff8880ff709000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 12: op=14 arg=[ffff888066f60000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 14: op=14 arg=[ffff888003afb000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 16: op=14 arg=[ffff8880abdcb000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 18: op=14 arg=[ffff8880f88f1000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 19: op=14 arg=[ffff8880f8b46000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 20: op=14 arg=[ffff8880f8b8b000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 22: op=14 arg=[ffff8880f8b3f000] result=-16
Nov 08 06:32:34 vserver1592 kernel:   call 23: op=14 arg=[ffff88800395e000] result=-16
Nov 08 06:32:34 vserver1592 kernel: BUG: unable to handle page fault for address: ffff8880ff5c1918
Nov 08 06:32:34 vserver1592 kernel: #PF: supervisor write access in kernel mode
Nov 08 06:32:34 vserver1592 kernel: #PF: error_code(0x0003) - permissions violation
Nov 08 06:32:34 vserver1592 kernel: PGD 220c067 P4D 220c067 PUD 1ff930067 PMD 1ff735067 PTE 80100000ff5c1065
Nov 08 06:32:34 vserver1592 kernel: Oops: 0003 [#1] PREEMPT SMP NOPTI
Nov 08 06:32:34 vserver1592 kernel: CPU: 0 PID: 1131590 Comm: runc Tainted: G        W         5.3.8-arch1-1 #1
Nov 08 06:32:34 vserver1592 kernel: RIP: e030:unmap_page_range+0x5db/0xc60
Nov 08 06:32:34 vserver1592 kernel: Code: 2b f8 ff ff 48 83 7c 24 10 00 4c 89 2c 24 49 89 c6 74 09 48 85 c0 0f 85 10 05 00 00 41 f6 47 20 01 0f 84 7a 02 00 00 4c 8b 23 <48> c7 03 00 00 00 00 49 39 6f 10 48 89 e8 49 0f 46 47 10 4d 39 6f
Nov 08 06:32:34 vserver1592 kernel: RSP: e02b:ffffc900417a7b30 EFLAGS: 00010202
Nov 08 06:32:34 vserver1592 kernel: RAX: ffffea0001a2eec0 RBX: ffff8880ff5c1918 RCX: 0000000001a2eec0
Nov 08 06:32:34 vserver1592 kernel: RDX: 80000021775bb167 RSI: 000000c000123000 RDI: 80000021775bb167
Nov 08 06:32:34 vserver1592 kernel: RBP: 000000c000123000 R08: 000fffffffffffff R09: ffff8881be3ded80
Nov 08 06:32:34 vserver1592 kernel: R10: 0000000000000002 R11: 0000000000000000 R12: 80000021775bb167
Nov 08 06:32:34 vserver1592 kernel: R13: 000000c000124000 R14: ffffea0001a2eec0 R15: ffffc900417a7c70
Nov 08 06:32:34 vserver1592 kernel: FS:  0000000000000000(0000) GS:ffff8881f5c00000(0000) knlGS:0000000000000000
Nov 08 06:32:34 vserver1592 kernel: CS:  e030 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 08 06:32:34 vserver1592 kernel: CR2: ffff8880ff5c1918 CR3: 000000000220a000 CR4: 0000000000042660
Nov 08 06:32:34 vserver1592 kernel: Call Trace:
Nov 08 06:32:34 vserver1592 kernel:  unmap_vmas+0x70/0xd0
Nov 08 06:32:34 vserver1592 kernel:  exit_mmap+0xbe/0x1b0
Nov 08 06:32:34 vserver1592 kernel:  mmput+0x49/0x100
Nov 08 06:32:34 vserver1592 kernel:  do_exit+0x2ad/0xb00
Nov 08 06:32:34 vserver1592 kernel:  do_group_exit+0x33/0xa0
Nov 08 06:32:34 vserver1592 kernel:  get_signal+0x136/0x8d0
Nov 08 06:32:34 vserver1592 kernel:  do_signal+0x43/0x680
Nov 08 06:32:34 vserver1592 kernel:  ? do_nanosleep+0xb7/0x180
Nov 08 06:32:34 vserver1592 kernel:  exit_to_usermode_loop+0xbe/0x110
Nov 08 06:32:34 vserver1592 kernel:  do_syscall_64+0x189/0x1c0
Nov 08 06:32:34 vserver1592 kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Nov 08 06:32:34 vserver1592 kernel: RIP: 0033:0x561579d38023
Nov 08 06:32:34 vserver1592 kernel: Code: Bad RIP value.
Nov 08 06:32:34 vserver1592 kernel: RSP: 002b:00007f0479f0cca0 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
Nov 08 06:32:34 vserver1592 kernel: RAX: fffffffffffffe00 RBX: 000000c000036a80 RCX: 0000561579d38023
Nov 08 06:32:34 vserver1592 kernel: RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c000036bc8
Nov 08 06:32:34 vserver1592 kernel: RBP: 00007f0479f0cce8 R08: 0000000000000000 R09: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000001
Nov 08 06:32:34 vserver1592 kernel: R13: 0000000000000000 R14: 000056157a0745fe R15: 0000000000000000
Nov 08 06:32:34 vserver1592 kernel: Modules linked in: veth xt_nat xt_tcpudp xt_conntrack xt_MASQUERADE nf_conntrack_netlink xfrm_user xfrm_algo xt_addrtype iptable_filter iptable_nat nf_nat br_netfilter bridge stp llc overlay nf_log_ipv6 nf_log_ipv4 nf_log_common nft_log nft_limit nft_ct nf_conntrack nf_defrag_ipv6>
Nov 08 06:32:34 vserver1592 kernel: CR2: ffff8880ff5c1918
Nov 08 06:32:34 vserver1592 kernel: ---[ end trace aa1a39e6c9d34ccf ]---
Nov 08 06:32:34 vserver1592 kernel: RIP: e030:unmap_page_range+0x5db/0xc60
Nov 08 06:32:34 vserver1592 kernel: Code: 2b f8 ff ff 48 83 7c 24 10 00 4c 89 2c 24 49 89 c6 74 09 48 85 c0 0f 85 10 05 00 00 41 f6 47 20 01 0f 84 7a 02 00 00 4c 8b 23 <48> c7 03 00 00 00 00 49 39 6f 10 48 89 e8 49 0f 46 47 10 4d 39 6f
Nov 08 06:32:34 vserver1592 kernel: RSP: e02b:ffffc900417a7b30 EFLAGS: 00010202
Nov 08 06:32:34 vserver1592 kernel: RAX: ffffea0001a2eec0 RBX: ffff8880ff5c1918 RCX: 0000000001a2eec0
Nov 08 06:32:34 vserver1592 kernel: RDX: 80000021775bb167 RSI: 000000c000123000 RDI: 80000021775bb167
Nov 08 06:32:34 vserver1592 kernel: RBP: 000000c000123000 R08: 000fffffffffffff R09: ffff8881be3ded80
Nov 08 06:32:34 vserver1592 kernel: R10: 0000000000000002 R11: 0000000000000000 R12: 80000021775bb167
Nov 08 06:32:34 vserver1592 kernel: R13: 000000c000124000 R14: ffffea0001a2eec0 R15: ffffc900417a7c70
Nov 08 06:32:34 vserver1592 kernel: FS:  0000000000000000(0000) GS:ffff8881f5c00000(0000) knlGS:0000000000000000
Nov 08 06:32:34 vserver1592 kernel: CS:  e030 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 08 06:32:34 vserver1592 kernel: CR2: 0000561579d37ff9 CR3: 000000000220a000 CR4: 0000000000042660
Nov 08 06:32:34 vserver1592 kernel: Fixing recursive fault but reboot is needed!
Nov 08 06:32:34 vserver1592 kernel: BUG: scheduling while atomic: runc/1131590/0x00000002
Nov 08 06:32:34 vserver1592 kernel: Modules linked in: veth xt_nat xt_tcpudp xt_conntrack xt_MASQUERADE nf_conntrack_netlink xfrm_user xfrm_algo xt_addrtype iptable_filter iptable_nat nf_nat br_netfilter bridge stp llc overlay nf_log_ipv6 nf_log_ipv4 nf_log_common nft_log nft_limit nft_ct nf_conntrack nf_defrag_ipv6>
Nov 08 06:32:34 vserver1592 kernel: Preemption disabled at:
Nov 08 06:32:34 vserver1592 kernel: [<0000000000000000>] 0x0
Nov 08 06:32:34 vserver1592 kernel: CPU: 0 PID: 1131590 Comm: runc Tainted: G      D W         5.3.8-arch1-1 #1
Nov 08 06:32:34 vserver1592 kernel: Call Trace:
Nov 08 06:32:34 vserver1592 kernel:  dump_stack+0x5c/0x80
Nov 08 06:32:34 vserver1592 kernel:  __schedule_bug.cold+0x8e/0x9b
Nov 08 06:32:34 vserver1592 kernel:  __schedule+0x59d/0x6d0
Nov 08 06:32:34 vserver1592 kernel:  schedule+0x43/0xd0
Nov 08 06:32:34 vserver1592 kernel:  do_exit.cold+0xb8/0xd3
Nov 08 06:32:34 vserver1592 kernel:  ? exit_to_usermode_loop+0xbe/0x110
Nov 08 06:32:34 vserver1592 kernel:  rewind_stack_do_exit+0x17/0x20

let me know if you need some more input
best regards
Florijan
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