Re: linux 5.14.3: free_user_ns causes NULL pointer dereference

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Hi!

Thank you for all your efforts with this issue!

I am using the stock Fedora 34 kernel. The failures happen quite frequently. It varies from an hour to a couple of days before the hang, and it appens on all the IBM blades and less frequently on HP DL380 G7.

The servers run selenimm-controlled Google Chrome compiled by Google, and that produces some traps. They It's quite high load on them.

Here is a new trace looking a bit different. Maybe some clues in there?

Oct 06 08:12:17.709377 kant4.opoint.com kernel: BUG: kernel NULL pointer dereference, address: 0000000000000251
Oct 06 08:12:17.709641 kant4.opoint.com kernel: #PF: supervisor read access in kernel mode
Oct 06 08:12:17.889197 kant4.opoint.com kernel: #PF: error_code(0x0000) - not-present page
Oct 06 08:12:17.967596 kant4.opoint.com kernel: PGD 0 P4D 0
Oct 06 08:12:18.051776 kant4.opoint.com kernel: Oops: 0000 [#1] SMP PTI
Oct 06 08:12:18.051895 kant4.opoint.com kernel: CPU: 9 PID: 3337825 Comm: chrome Not tainted 5.14.9-200.fc34.x86_64 #1
Oct 06 08:12:18.051962 kant4.opoint.com kernel: Hardware name: IBM BladeCenter HS22 -[7870TKN]-/68Y8163, BIOS -[P9E164CUS-1.28]- 04/17/2018
Oct 06 08:12:18.052022 kant4.opoint.com kernel: RIP: 0010:is_ucounts_overlimit+0x42/0x60
Oct 06 08:12:18.052080 kant4.opoint.com kernel: Code: 8d 14 07 48 8b 0a 4c 39 c9 77 30 48 85 ff 74 2c 48 83 c6 3e eb 10 48 8b b8 e8 01 00 00 48 85 ff 74 1a 4a 8d 14 07 48 8b 47 10 <48> 8b 0c f0 48 8b 12 48 39 ca 76 e0 b8 01 00 00 00 c3 3>
Oct 06 08:12:18.052154 kant4.opoint.com kernel: RSP: 0018:ffffb8118f9ffdc8 EFLAGS: 00010212
Oct 06 08:12:18.052227 kant4.opoint.com kernel: RAX: 0000000000000001 RBX: ffff994b86f77bc0 RCX: 0000000000000000
Oct 06 08:12:18.052344 kant4.opoint.com kernel: RDX: ffff994b86f77c40 RSI: 000000000000004a RDI: ffff994b86f77bc0
Oct 06 08:12:18.052452 kant4.opoint.com kernel: RBP: ffffb8118f9ffe60 R08: 0000000000000080 R09: 0000000000075f6b
Oct 06 08:12:18.052523 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000000 R12: ffffb8118f9ffed0
Oct 06 08:12:18.052613 kant4.opoint.com kernel: R13: 0000000000000000 R14: 00000000003d0f00 R15: ffff995f0d0e8000
Oct 06 08:12:18.052701 kant4.opoint.com kernel: FS:  00007f2bc6c01d80(0000) GS:ffff99689fac0000(0000) knlGS:0000000000000000
Oct 06 08:12:18.052774 kant4.opoint.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 06 08:12:18.052850 kant4.opoint.com kernel: CR2: 0000000000000251 CR3: 0000000a98dae005 CR4: 00000000000206e0
Oct 06 08:12:18.052923 kant4.opoint.com kernel: Call Trace:
Oct 06 08:12:18.052989 kant4.opoint.com kernel:  copy_process+0x444/0x1c20
Oct 06 08:12:18.053116 kant4.opoint.com kernel:  kernel_clone+0x87/0x380
Oct 06 08:12:18.053185 kant4.opoint.com kernel:  __do_sys_clone+0x52/0x60
Oct 06 08:12:18.053251 kant4.opoint.com kernel:  do_syscall_64+0x3b/0x90
Oct 06 08:12:18.053366 kant4.opoint.com kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xae
Oct 06 08:12:18.053450 kant4.opoint.com kernel: RIP: 0033:0x7f2bc8288345
Oct 06 08:12:18.053536 kant4.opoint.com kernel: Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3>
Oct 06 08:12:18.053640 kant4.opoint.com kernel: RSP: 002b:00007ffc07a6d8e8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
Oct 06 08:12:18.053743 kant4.opoint.com kernel: RAX: ffffffffffffffda RBX: 00007f2bacbb3640 RCX: 00007f2bc8288345
Oct 06 08:12:18.053888 kant4.opoint.com kernel: RDX: 00007f2bacbb3910 RSI: 00007f2bacbb28b0 RDI: 00000000003d0f00
Oct 05 16:08:07.573709 kant4.opoint.com kernel: traps: chrome[1578552] trap invalid opcode ip:557906685910 sp:7ffcbd31bde0 error:0 in chrome[55790650a000+857b000]
Oct 05 16:53:44.208521 kant4.opoint.com kernel: traps: chrome[1849193] trap invalid opcode ip:55c1a0bb7910 sp:7ffd510ac860 error:0 in chrome[55c1a0a3c000+857b000]
Oct 05 17:25:37.631729 kant4.opoint.com kernel: traps: chrome[2023334] trap invalid opcode ip:55dea0728910 sp:7ffefcec5300 error:0 in chrome[55dea05ad000+857b000]
Oct 05 20:21:30.226448 kant4.opoint.com kernel: traps: chrome[3288200] trap invalid opcode ip:55d913483b9f sp:7ffcedbf57f0 error:0 in chrome[55d90ea9a000+857b000]
Oct 05 21:21:12.211391 kant4.opoint.com kernel: traps: chrome[3659878] trap invalid opcode ip:56503e2a0910 sp:7ffca7949460 error:0 in chrome[56503e125000+857b000]
Oct 05 22:16:34.325471 kant4.opoint.com kernel: traps: chrome[3954333] trap invalid opcode ip:55ac2f16b910 sp:7fffd3621fe0 error:0 in chrome[55ac2eff0000+857b000]
Oct 05 22:52:28.831375 kant4.opoint.com kernel: traps: chrome[4165973] trap invalid opcode ip:55bb31ccc910 sp:7fff26662d80 error:0 in chrome[55bb31b51000+857b000]
Oct 06 08:02:07.417376 kant4.opoint.com kernel: getlink4[3251694]: segfault at 0 ip 00007f2bdbabc0c0 sp 00007fffff169a38 error 4 in libc-2.33.so[7f2bdb98b000+14d000]
Oct 06 08:02:07.417455 kant4.opoint.com kernel: Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 45 83 f8 30 77 40 <f3> 0f 6f 0f f3 0f 6f 16 66 0f ef c0 66 0f 74 c1 66 0f 7>
Oct 06 08:07:31.375414 kant4.opoint.com kernel: getlink8[3251723]: segfault at 0 ip 00007fb8ee8de0c0 sp 00007ffe9eae5898 error 4 in libc-2.33.so[7fb8ee7ad000+14d000]
Oct 06 08:07:31.375744 kant4.opoint.com kernel: Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 45 83 f8 30 77 40 <f3> 0f 6f 0f f3 0f 6f 16 66 0f ef c0 66 0f 74 c1 66 0f 7>
Oct 06 08:11:44.148749 kant4.opoint.com kernel: getlink8[3310785]: segfault at 0 ip 00007f30262810c0 sp 00007ffd8d263db8 error 4 in libc-2.33.so[7f3026150000+14d000]
Oct 06 08:11:44.148859 kant4.opoint.com kernel: Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 45 83 f8 30 77 40 <f3> 0f 6f 0f f3 0f 6f 16 66 0f ef c0 66 0f 74 c1 66 0f 7>
Oct 06 08:12:17.709377 kant4.opoint.com kernel: BUG: kernel NULL pointer dereference, address: 0000000000000251
Oct 06 08:11:44.148749 kant4.opoint.com kernel: getlink8[3310785]: segfault at 0 ip 00007f30262810c0 sp 00007ffd8d263db8 error 4 in libc-2.33.so[7f3026150000+14d000]
Oct 06 08:11:44.148859 kant4.opoint.com kernel: Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 45 83 f8 30 77 40 <f3> 0f 6f 0f f3 0f 6f 16 66 0f ef c0 66 0f 74 c1 66 0f 7>
Oct 06 08:11:44.148749 kant4.opoint.com kernel: getlink8[3310785]: segfault at 0 ip 00007f30262810c0 sp 00007ffd8d263db8 error 4 in libc-2.33.so[7f3026150000+14d000]
Oct 06 08:11:44.148859 kant4.opoint.com kernel: Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 45 83 f8 30 77 40 <f3> 0f 6f 0f f3 0f 6f 16 66 0f ef c0 66 0f 74 c1 66 0f 7>
Oct 06 08:12:17.709377 kant4.opoint.com kernel: BUG: kernel NULL pointer dereference, address: 0000000000000251
Oct 06 08:12:17.709641 kant4.opoint.com kernel: #PF: supervisor read access in kernel mode
Oct 06 08:12:17.889197 kant4.opoint.com kernel: #PF: error_code(0x0000) - not-present page
Oct 06 08:12:17.967596 kant4.opoint.com kernel: PGD 0 P4D 0
Oct 06 08:12:18.051776 kant4.opoint.com kernel: Oops: 0000 [#1] SMP PTI
Oct 06 08:12:18.051895 kant4.opoint.com kernel: CPU: 9 PID: 3337825 Comm: chrome Not tainted 5.14.9-200.fc34.x86_64 #1
Oct 06 08:12:18.051962 kant4.opoint.com kernel: Hardware name: IBM BladeCenter HS22 -[7870TKN]-/68Y8163, BIOS -[P9E164CUS-1.28]- 04/17/2018
Oct 06 08:12:18.052022 kant4.opoint.com kernel: RIP: 0010:is_ucounts_overlimit+0x42/0x60
Oct 06 08:12:18.052080 kant4.opoint.com kernel: Code: 8d 14 07 48 8b 0a 4c 39 c9 77 30 48 85 ff 74 2c 48 83 c6 3e eb 10 48 8b b8 e8 01 00 00 48 85 ff 74 1a 4a 8d 14 07 48 8b 47 10 <48> 8b 0c f0 48 8b 12 48 39 ca 76 e0 b8 01 00 00 00 c3 3>
Oct 06 08:12:18.052154 kant4.opoint.com kernel: RSP: 0018:ffffb8118f9ffdc8 EFLAGS: 00010212
Oct 06 08:12:18.052227 kant4.opoint.com kernel: RAX: 0000000000000001 RBX: ffff994b86f77bc0 RCX: 0000000000000000
Oct 06 08:12:18.052344 kant4.opoint.com kernel: RDX: ffff994b86f77c40 RSI: 000000000000004a RDI: ffff994b86f77bc0
Oct 06 08:12:18.052452 kant4.opoint.com kernel: RBP: ffffb8118f9ffe60 R08: 0000000000000080 R09: 0000000000075f6b
Oct 06 08:12:18.052523 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000000 R12: ffffb8118f9ffed0
Oct 06 08:12:18.052613 kant4.opoint.com kernel: R13: 0000000000000000 R14: 00000000003d0f00 R15: ffff995f0d0e8000
Oct 06 08:12:18.052701 kant4.opoint.com kernel: FS:  00007f2bc6c01d80(0000) GS:ffff99689fac0000(0000) knlGS:0000000000000000
Oct 06 08:12:18.052774 kant4.opoint.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 06 08:12:18.052850 kant4.opoint.com kernel: CR2: 0000000000000251 CR3: 0000000a98dae005 CR4: 00000000000206e0
Oct 06 08:12:18.052923 kant4.opoint.com kernel: Call Trace:
Oct 06 08:12:18.052989 kant4.opoint.com kernel:  copy_process+0x444/0x1c20
Oct 06 08:12:18.053116 kant4.opoint.com kernel:  kernel_clone+0x87/0x380
Oct 06 08:12:18.053185 kant4.opoint.com kernel:  __do_sys_clone+0x52/0x60
Oct 06 08:12:18.053251 kant4.opoint.com kernel:  do_syscall_64+0x3b/0x90
Oct 06 08:12:18.053366 kant4.opoint.com kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xae
Oct 06 08:12:18.053450 kant4.opoint.com kernel: RIP: 0033:0x7f2bc8288345
Oct 06 08:12:18.053536 kant4.opoint.com kernel: Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3>
Oct 06 08:12:18.053640 kant4.opoint.com kernel: RSP: 002b:00007ffc07a6d8e8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
Oct 06 08:12:18.053743 kant4.opoint.com kernel: RAX: ffffffffffffffda RBX: 00007f2bacbb3640 RCX: 00007f2bc8288345
Oct 06 08:12:18.053888 kant4.opoint.com kernel: RDX: 00007f2bacbb3910 RSI: 00007f2bacbb28b0 RDI: 00000000003d0f00
Oct 06 08:12:18.053955 kant4.opoint.com kernel: RBP: 00007ffc07a6dc10 R08: 00007f2bacbb3640 R09: 00007f2bacbb3640
Oct 06 08:12:18.054025 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000202 R12: 00007ffc07a6d9ae
Oct 06 08:12:18.054091 kant4.opoint.com kernel: R13: 00007ffc07a6d9af R14: 0000000000000000 R15: 00007f2bacbb3640
Oct 06 08:12:18.054162 kant4.opoint.com kernel: Modules linked in: binfmt_misc rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc fscache netfs nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_i>
Oct 06 08:12:18.054308 kant4.opoint.com kernel: CR2: 0000000000000251
Oct 06 08:12:18.054386 kant4.opoint.com kernel: ---[ end trace 08aecc7d786b859c ]---
Oct 06 08:12:18.054450 kant4.opoint.com kernel: RIP: 0010:is_ucounts_overlimit+0x42/0x60
Oct 06 08:12:18.054509 kant4.opoint.com kernel: Code: 8d 14 07 48 8b 0a 4c 39 c9 77 30 48 85 ff 74 2c 48 83 c6 3e eb 10 48 8b b8 e8 01 00 00 48 85 ff 74 1a 4a 8d 14 07 48 8b 47 10 <48> 8b 0c f0 48 8b 12 48 39 ca 76 e0 b8 01 00 00 00 c3 3>
Oct 06 08:12:18.054578 kant4.opoint.com kernel: RSP: 0018:ffffb8118f9ffdc8 EFLAGS: 00010212
Oct 06 08:12:18.054637 kant4.opoint.com kernel: RAX: 0000000000000001 RBX: ffff994b86f77bc0 RCX: 0000000000000000
Oct 06 08:12:18.054680 kant4.opoint.com kernel: RDX: ffff994b86f77c40 RSI: 000000000000004a RDI: ffff994b86f77bc0
Oct 06 08:12:18.054729 kant4.opoint.com kernel: RBP: ffffb8118f9ffe60 R08: 0000000000000080 R09: 0000000000075f6b
Oct 06 08:12:18.054769 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000000 R12: ffffb8118f9ffed0
Oct 06 08:12:18.054806 kant4.opoint.com kernel: R13: 0000000000000000 R14: 00000000003d0f00 R15: ffff995f0d0e8000
Oct 06 08:12:18.054841 kant4.opoint.com kernel: FS:  00007f2bc6c01d80(0000) GS:ffff99689fac0000(0000) knlGS:0000000000000000
Oct 06 08:12:18.054876 kant4.opoint.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 06 08:12:18.054922 kant4.opoint.com kernel: CR2: 0000000000000251 CR3: 0000000a98dae005 CR4: 00000000000206e0
Oct 06 08:12:20.369065 kant4.opoint.com kernel: traps: chrome[3242064] trap invalid opcode ip:55a5975a8910 sp:7ffe43768e20 error:0 in chrome[55a59742d000+857b000]
Oct 06 08:12:24.954402 kant4.opoint.com kernel: BUG: kernel NULL pointer dereference, address: 0000000000000251
Oct 06 08:12:24.954696 kant4.opoint.com kernel: #PF: supervisor read access in kernel mode
Oct 06 08:12:25.230724 kant4.opoint.com kernel: #PF: error_code(0x0000) - not-present page
Oct 06 08:12:25.234392 kant4.opoint.com kernel: PGD 0 P4D 0
Oct 06 08:12:25.234606 kant4.opoint.com kernel: Oops: 0000 [#2] SMP PTI
Oct 06 08:12:25.234686 kant4.opoint.com kernel: CPU: 4 PID: 3337732 Comm: ThreadPoolForeg Tainted: G      D           5.14.9-200.fc34.x86_64 #1
Oct 06 08:12:25.234756 kant4.opoint.com kernel: Hardware name: IBM BladeCenter HS22 -[7870TKN]-/68Y8163, BIOS -[P9E164CUS-1.28]- 04/17/2018
 ^X
Oct 06 08:11:44.148859 kant4.opoint.com kernel: Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 45 83 f8 30 77 40 <f3> 0f 6f 0f f3 0f 6f 16 66 0f ef c0 66 0f 74 c1 66 0f 74 ca 66 0f
Oct 06 08:12:17.709377 kant4.opoint.com kernel: BUG: kernel NULL pointer dereference, address: 0000000000000251
Oct 06 08:12:17.709641 kant4.opoint.com kernel: #PF: supervisor read access in kernel mode
Oct 06 08:12:17.889197 kant4.opoint.com kernel: #PF: error_code(0x0000) - not-present page
Oct 06 08:12:17.967596 kant4.opoint.com kernel: PGD 0 P4D 0
Oct 06 08:12:18.051776 kant4.opoint.com kernel: Oops: 0000 [#1] SMP PTI
Oct 06 08:12:18.051895 kant4.opoint.com kernel: CPU: 9 PID: 3337825 Comm: chrome Not tainted 5.14.9-200.fc34.x86_64 #1
Oct 06 08:12:18.051962 kant4.opoint.com kernel: Hardware name: IBM BladeCenter HS22 -[7870TKN]-/68Y8163, BIOS -[P9E164CUS-1.28]- 04/17/2018
Oct 06 08:12:18.052022 kant4.opoint.com kernel: RIP: 0010:is_ucounts_overlimit+0x42/0x60
Oct 06 08:12:18.052080 kant4.opoint.com kernel: Code: 8d 14 07 48 8b 0a 4c 39 c9 77 30 48 85 ff 74 2c 48 83 c6 3e eb 10 48 8b b8 e8 01 00 00 48 85 ff 74 1a 4a 8d 14 07 48 8b 47 10 <48> 8b 0c f0 48 8b 12 48 39 ca 76 e0 b8 01 00 00 00 c3 31 c0 c3 cc
Oct 06 08:12:18.052154 kant4.opoint.com kernel: RSP: 0018:ffffb8118f9ffdc8 EFLAGS: 00010212
Oct 06 08:12:18.052227 kant4.opoint.com kernel: RAX: 0000000000000001 RBX: ffff994b86f77bc0 RCX: 0000000000000000
Oct 06 08:12:18.052344 kant4.opoint.com kernel: RDX: ffff994b86f77c40 RSI: 000000000000004a RDI: ffff994b86f77bc0
Oct 06 08:12:18.052452 kant4.opoint.com kernel: RBP: ffffb8118f9ffe60 R08: 0000000000000080 R09: 0000000000075f6b
Oct 06 08:12:18.052523 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000000 R12: ffffb8118f9ffed0
Oct 06 08:12:18.052613 kant4.opoint.com kernel: R13: 0000000000000000 R14: 00000000003d0f00 R15: ffff995f0d0e8000
Oct 06 08:12:18.052701 kant4.opoint.com kernel: FS:  00007f2bc6c01d80(0000) GS:ffff99689fac0000(0000) knlGS:0000000000000000
Oct 06 08:12:18.052774 kant4.opoint.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 06 08:12:18.052850 kant4.opoint.com kernel: CR2: 0000000000000251 CR3: 0000000a98dae005 CR4: 00000000000206e0
Oct 06 08:12:18.052923 kant4.opoint.com kernel: Call Trace:
Oct 06 08:12:18.052989 kant4.opoint.com kernel:  copy_process+0x444/0x1c20
Oct 06 08:12:18.053116 kant4.opoint.com kernel:  kernel_clone+0x87/0x380
Oct 06 08:12:18.053185 kant4.opoint.com kernel:  __do_sys_clone+0x52/0x60
Oct 06 08:12:18.053251 kant4.opoint.com kernel:  do_syscall_64+0x3b/0x90
Oct 06 08:12:18.053366 kant4.opoint.com kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xae
Oct 06 08:12:18.053450 kant4.opoint.com kernel: RIP: 0033:0x7f2bc8288345
Oct 06 08:12:18.053536 kant4.opoint.com kernel: Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00
Oct 06 08:12:18.053640 kant4.opoint.com kernel: RSP: 002b:00007ffc07a6d8e8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
Oct 06 08:12:18.053743 kant4.opoint.com kernel: RAX: ffffffffffffffda RBX: 00007f2bacbb3640 RCX: 00007f2bc8288345
Oct 06 08:12:18.053888 kant4.opoint.com kernel: RDX: 00007f2bacbb3910 RSI: 00007f2bacbb28b0 RDI: 00000000003d0f00
Oct 06 08:12:18.053955 kant4.opoint.com kernel: RBP: 00007ffc07a6dc10 R08: 00007f2bacbb3640 R09: 00007f2bacbb3640
Oct 06 08:12:18.054025 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000202 R12: 00007ffc07a6d9ae
Oct 06 08:12:18.054091 kant4.opoint.com kernel: R13: 00007ffc07a6d9af R14: 0000000000000000 R15: 00007f2bacbb3640
Oct 06 08:12:18.054162 kant4.opoint.com kernel: Modules linked in: binfmt_misc rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc fscache netfs nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_>
Oct 06 08:12:18.054308 kant4.opoint.com kernel: CR2: 0000000000000251
Oct 06 08:12:18.054386 kant4.opoint.com kernel: ---[ end trace 08aecc7d786b859c ]---
Oct 06 08:12:18.054450 kant4.opoint.com kernel: RIP: 0010:is_ucounts_overlimit+0x42/0x60
Oct 06 08:12:18.054509 kant4.opoint.com kernel: Code: 8d 14 07 48 8b 0a 4c 39 c9 77 30 48 85 ff 74 2c 48 83 c6 3e eb 10 48 8b b8 e8 01 00 00 48 85 ff 74 1a 4a 8d 14 07 48 8b 47 10 <48> 8b 0c f0 48 8b 12 48 39 ca 76 e0 b8 01 00 00 00 c3 31 c0 c3 cc
Oct 06 08:12:18.054578 kant4.opoint.com kernel: RSP: 0018:ffffb8118f9ffdc8 EFLAGS: 00010212
Oct 06 08:12:18.054637 kant4.opoint.com kernel: RAX: 0000000000000001 RBX: ffff994b86f77bc0 RCX: 0000000000000000
Oct 06 08:12:18.054680 kant4.opoint.com kernel: RDX: ffff994b86f77c40 RSI: 000000000000004a RDI: ffff994b86f77bc0
Oct 06 08:12:18.054729 kant4.opoint.com kernel: RBP: ffffb8118f9ffe60 R08: 0000000000000080 R09: 0000000000075f6b
Oct 06 08:12:18.054769 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000000 R12: ffffb8118f9ffed0
Oct 06 08:12:18.054806 kant4.opoint.com kernel: R13: 0000000000000000 R14: 00000000003d0f00 R15: ffff995f0d0e8000
Oct 06 08:12:18.054841 kant4.opoint.com kernel: FS:  00007f2bc6c01d80(0000) GS:ffff99689fac0000(0000) knlGS:0000000000000000
Oct 06 08:12:18.054876 kant4.opoint.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 06 08:12:18.054922 kant4.opoint.com kernel: CR2: 0000000000000251 CR3: 0000000a98dae005 CR4: 00000000000206e0
Oct 06 08:12:20.369065 kant4.opoint.com kernel: traps: chrome[3242064] trap invalid opcode ip:55a5975a8910 sp:7ffe43768e20 error:0 in chrome[55a59742d000+857b000]
Oct 06 08:12:24.954402 kant4.opoint.com kernel: BUG: kernel NULL pointer dereference, address: 0000000000000251
Oct 06 08:12:24.954696 kant4.opoint.com kernel: #PF: supervisor read access in kernel mode
Oct 06 08:12:25.230724 kant4.opoint.com kernel: #PF: error_code(0x0000) - not-present page
Oct 06 08:12:25.234392 kant4.opoint.com kernel: PGD 0 P4D 0
Oct 06 08:12:25.234606 kant4.opoint.com kernel: Oops: 0000 [#2] SMP PTI
Oct 06 08:12:25.234686 kant4.opoint.com kernel: CPU: 4 PID: 3337732 Comm: ThreadPoolForeg Tainted: G      D           5.14.9-200.fc34.x86_64 #1
Oct 06 08:12:25.234756 kant4.opoint.com kernel: Hardware name: IBM BladeCenter HS22 -[7870TKN]-/68Y8163, BIOS -[P9E164CUS-1.28]- 04/17/2018
Oct 06 08:12:25.234818 kant4.opoint.com kernel: RIP: 0010:is_ucounts_overlimit+0x42/0x60
Oct 06 08:12:25.234881 kant4.opoint.com kernel: Code: 8d 14 07 48 8b 0a 4c 39 c9 77 30 48 85 ff 74 2c 48 83 c6 3e eb 10 48 8b b8 e8 01 00 00 48 85 ff 74 1a 4a 8d 14 07 48 8b 47 10 <48> 8b 0c f0 48 8b 12 48 39 ca 76 e0 b8 01 00 00 00 c3 31 c0 c3 cc
Oct 06 08:12:25.234949 kant4.opoint.com kernel: RSP: 0018:ffffb81189d5fdc8 EFLAGS: 00010212
Oct 06 08:12:25.235017 kant4.opoint.com kernel: RAX: 0000000000000001 RBX: ffff994b86f77bc0 RCX: 0000000000000000
Oct 06 08:12:25.235079 kant4.opoint.com kernel: RDX: ffff994b86f77c40 RSI: 000000000000004a RDI: ffff994b86f77bc0
Oct 06 08:12:25.235142 kant4.opoint.com kernel: RBP: ffffb81189d5fe60 R08: 0000000000000080 R09: 0000000000075f6b
Oct 06 08:12:25.235227 kant4.opoint.com kernel: R10: 00000000e846208d R11: 0000000075572f44 R12: ffffb81189d5fed0
Oct 06 08:12:25.235307 kant4.opoint.com kernel: R13: 0000000000000000 R14: 00000000003d0f00 R15: ffff994be4dc2680
Oct 06 08:12:25.235420 kant4.opoint.com kernel: FS:  00007fea1f676640(0000) GS:ffff9950e7b00000(0000) knlGS:0000000000000000
Oct 06 08:12:25.235491 kant4.opoint.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 06 08:12:25.235571 kant4.opoint.com kernel: CR2: 0000000000000251 CR3: 0000000692ffc003 CR4: 00000000000206e0
Oct 06 08:12:25.235654 kant4.opoint.com kernel: Call Trace:
lines 1191-1257/1834 62%
Oct 06 08:11:44.148859 kant4.opoint.com kernel: Code: d2 0f 84 b7 0f 00 00 48 83 fa 01 0f 84 b9 0f 00 00 49 89 d3 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 45 83 f8 30 77 40 <f3> 0f 6f 0f f3 0f 6f 16 66 0f ef c0 66 0f 74 c1 66 0f 74 ca 66 0f
Oct 06 08:12:17.709377 kant4.opoint.com kernel: BUG: kernel NULL pointer dereference, address: 0000000000000251
Oct 06 08:12:17.709641 kant4.opoint.com kernel: #PF: supervisor read access in kernel mode
Oct 06 08:12:17.889197 kant4.opoint.com kernel: #PF: error_code(0x0000) - not-present page
Oct 06 08:12:17.967596 kant4.opoint.com kernel: PGD 0 P4D 0
Oct 06 08:12:18.051776 kant4.opoint.com kernel: Oops: 0000 [#1] SMP PTI
Oct 06 08:12:18.051895 kant4.opoint.com kernel: CPU: 9 PID: 3337825 Comm: chrome Not tainted 5.14.9-200.fc34.x86_64 #1
Oct 06 08:12:18.051962 kant4.opoint.com kernel: Hardware name: IBM BladeCenter HS22 -[7870TKN]-/68Y8163, BIOS -[P9E164CUS-1.28]- 04/17/2018
Oct 06 08:12:18.052022 kant4.opoint.com kernel: RIP: 0010:is_ucounts_overlimit+0x42/0x60
Oct 06 08:12:18.052080 kant4.opoint.com kernel: Code: 8d 14 07 48 8b 0a 4c 39 c9 77 30 48 85 ff 74 2c 48 83 c6 3e eb 10 48 8b b8 e8 01 00 00 48 85 ff 74 1a 4a 8d 14 07 48 8b 47 10 <48> 8b 0c f0 48 8b 12 48 39 ca 76 e0 b8 01 00 00 00 c3 31 c0 c3 cc
Oct 06 08:12:18.052154 kant4.opoint.com kernel: RSP: 0018:ffffb8118f9ffdc8 EFLAGS: 00010212
Oct 06 08:12:18.052227 kant4.opoint.com kernel: RAX: 0000000000000001 RBX: ffff994b86f77bc0 RCX: 0000000000000000
Oct 06 08:12:18.052344 kant4.opoint.com kernel: RDX: ffff994b86f77c40 RSI: 000000000000004a RDI: ffff994b86f77bc0
Oct 06 08:12:18.052452 kant4.opoint.com kernel: RBP: ffffb8118f9ffe60 R08: 0000000000000080 R09: 0000000000075f6b
Oct 06 08:12:18.052523 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000000 R12: ffffb8118f9ffed0
Oct 06 08:12:18.052613 kant4.opoint.com kernel: R13: 0000000000000000 R14: 00000000003d0f00 R15: ffff995f0d0e8000
Oct 06 08:12:18.052701 kant4.opoint.com kernel: FS:  00007f2bc6c01d80(0000) GS:ffff99689fac0000(0000) knlGS:0000000000000000
Oct 06 08:12:18.052774 kant4.opoint.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 06 08:12:18.052850 kant4.opoint.com kernel: CR2: 0000000000000251 CR3: 0000000a98dae005 CR4: 00000000000206e0
Oct 06 08:12:18.052923 kant4.opoint.com kernel: Call Trace:
Oct 06 08:12:18.052989 kant4.opoint.com kernel:  copy_process+0x444/0x1c20
Oct 06 08:12:18.053116 kant4.opoint.com kernel:  kernel_clone+0x87/0x380
Oct 06 08:12:18.053185 kant4.opoint.com kernel:  __do_sys_clone+0x52/0x60
Oct 06 08:12:18.053251 kant4.opoint.com kernel:  do_syscall_64+0x3b/0x90
Oct 06 08:12:18.053366 kant4.opoint.com kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xae
Oct 06 08:12:18.053450 kant4.opoint.com kernel: RIP: 0033:0x7f2bc8288345
Oct 06 08:12:18.053536 kant4.opoint.com kernel: Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00
Oct 06 08:12:18.053640 kant4.opoint.com kernel: RSP: 002b:00007ffc07a6d8e8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
Oct 06 08:12:18.053743 kant4.opoint.com kernel: RAX: ffffffffffffffda RBX: 00007f2bacbb3640 RCX: 00007f2bc8288345
Oct 06 08:12:18.053888 kant4.opoint.com kernel: RDX: 00007f2bacbb3910 RSI: 00007f2bacbb28b0 RDI: 00000000003d0f00
Oct 06 08:12:18.053955 kant4.opoint.com kernel: RBP: 00007ffc07a6dc10 R08: 00007f2bacbb3640 R09: 00007f2bacbb3640
Oct 06 08:12:18.054025 kant4.opoint.com kernel: R10: 00007f2bacbb3910 R11: 0000000000000202 R12: 00007ffc07a6d9ae
Oct 06 08:12:18.054091 kant4.opoint.com kernel: R13: 00007ffc07a6d9af R14: 0000000000000000 R15: 00007f2bacbb3640
Oct 06 08:12:18.054162 kant4.opoint.com kernel: Modules linked in: binfmt_misc rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc fscache netfs nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_tables ebtable_nat ebtabl>
Oct 06 08:12:18.054308 kant4.opoint.com kernel: CR2: 0000000000000251
Oct 06 08:12:18.054386 kant4.opoint.com kernel: ---[ end trace 08aecc7d786b859c ]

--

Best regards / Med vennlig hilsen

Rune Kleveland
CTO, Opoint Technology Part of Infomedia
Mob: +47 95 08 89 25
rune.kleveland@xxxxxxxxxxxx
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