Sorry for posting without subject. Added. Thanks.

Am Mi., 18. Dez. 2024 um 01:57 Uhr schrieb Kai Krakow kai@kaishome.de:

Hello!

Running 6.12.4 on Gentoo, using zswap with zsmalloc.

Since 6.12, I often experience the following error while installing/compiling packages:

Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:11:58 jupiter kernel: Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF Dez 16 03:12:03 jupiter kernel: pagefault_out_of_memory: 8645812 callbacks suppressed

Programs then slowly start to stop responding and the system won't shut down cleanly.

I'm starting to get backtraces after a while:

Dez 16 03:58:17 jupiter kernel: ------------[ cut here ]------------ Dez 16 03:58:17 jupiter kernel: WARNING: CPU: 5 PID: 5149 at mm/swapfile.c:1566 free_swap_and_cache_nr+0xab/0x540 Dez 16 03:58:17 jupiter kernel: Modules linked in: nfnetlink_queue nf_conntrack_netlink ip6t_REJECT nf_reject_ipv6 ip6table_nat ip6table_filter xt_nat ipt_REJECT nf_reject_ipv4 xt_NFQUEUE xt_mark xt_connmark iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter ip6table_mangle ip6_tables iptable_mangle xt_DSCP xt_tcpudp ip_tables x_tables rfcomm snd_hrtimer> Dez 16 03:58:17 jupiter kernel: gpu_sched drm_gpuvm drm_exec i915 drm_buddy drm_display_helper ttm nvidia_uvm(PO) nvidia_modeset(PO) nvidia(PO) lm92 efivarfs Dez 16 03:58:17 jupiter kernel: CPU: 5 UID: 1000 PID: 5149 Comm: QXcbEventQueue Tainted: P O 6.12.4-gentoo-r1 #1 Dez 16 03:58:17 jupiter kernel: Tainted: [P]=PROPRIETARY_MODULE, [O]=OOT_MODULE Dez 16 03:58:17 jupiter kernel: Hardware name: ASRock Z690 Pro RS/Z690 Pro RS, BIOS 18.02 01/04/2024 Dez 16 03:58:17 jupiter kernel: RIP: 0010:free_swap_and_cache_nr+0xab/0x540 Dez 16 03:58:17 jupiter kernel: Code: 31 ed 4c 89 7c 24 10 49 89 dc 48 ba 00 00 00 00 00 00 00 fc 48 89 5c 24 18 45 89 ef 48 21 d1 44 88 4c 24 26 48 89 0c 24 eb 1c <0f> 0b 41 83 c7 01 49 83 c4 01 45 39 fe 0f 8e dd 00 00 00 48 8b 45 Dez 16 03:58:17 jupiter kernel: RSP: 0018:ffffb2bcc984bac8 EFLAGS: 00010246 Dez 16 03:58:17 jupiter kernel: RAX: 0000000000000000 RBX: 00000000002c1603 RCX: 0000000000000000 Dez 16 03:58:17 jupiter kernel: RDX: fc00000000000000 RSI: 0000000000000001 RDI: ffff8e093c170f00 Dez 16 03:58:17 jupiter kernel: RBP: ffff8e084a8bec00 R08: 0000000000000008 R09: 0000000000000000 Dez 16 03:58:17 jupiter kernel: R10: ffffd68059365ec0 R11: 0000000000000000 R12: 00000000002c1603 Dez 16 03:58:17 jupiter kernel: R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 Dez 16 03:58:17 jupiter kernel: FS: 0000000000000000(0000) GS:ffff8e0f6f340000(0000) knlGS:0000000000000000 Dez 16 03:58:17 jupiter kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dez 16 03:58:17 jupiter kernel: CR2: 0000188c00a50000 CR3: 00000007db42b000 CR4: 0000000000f52ef0 Dez 16 03:58:17 jupiter kernel: PKRU: 55555554 Dez 16 03:58:17 jupiter kernel: Call Trace: Dez 16 03:58:17 jupiter kernel: <TASK> Dez 16 03:58:17 jupiter kernel: ? __warn.cold+0x90/0x9e Dez 16 03:58:17 jupiter kernel: ? free_swap_and_cache_nr+0xab/0x540 Dez 16 03:58:17 jupiter kernel: ? report_bug+0xf6/0x140 Dez 16 03:58:17 jupiter kernel: ? handle_bug+0x4f/0x90 Dez 16 03:58:17 jupiter kernel: ? exc_invalid_op+0x17/0x60 Dez 16 03:58:17 jupiter kernel: ? asm_exc_invalid_op+0x1a/0x20 Dez 16 03:58:17 jupiter kernel: ? free_swap_and_cache_nr+0xab/0x540 Dez 16 03:58:17 jupiter kernel: ? free_swap_and_cache_nr+0x2c/0x540 Dez 16 03:58:17 jupiter kernel: ? swap_pte_batch+0xdc/0x1f0 Dez 16 03:58:17 jupiter kernel: unmap_page_range+0xa18/0x16b0 Dez 16 03:58:17 jupiter kernel: unmap_vmas+0xb7/0x170 Dez 16 03:58:17 jupiter kernel: exit_mmap+0xfb/0x280 Dez 16 03:58:17 jupiter kernel: __mmput+0x35/0x120 Dez 16 03:58:17 jupiter kernel: do_exit+0x255/0x930 Dez 16 03:58:17 jupiter kernel: do_group_exit+0x2b/0x80 Dez 16 03:58:17 jupiter kernel: get_signal+0x774/0x7b0 Dez 16 03:58:17 jupiter kernel: arch_do_signal_or_restart+0x29/0x230 Dez 16 03:58:17 jupiter kernel: syscall_exit_to_user_mode+0x7b/0xf0 Dez 16 03:58:17 jupiter kernel: do_syscall_64+0x57/0x100 Dez 16 03:58:17 jupiter kernel: entry_SYSCALL_64_after_hwframe+0x4b/0x53 Dez 16 03:58:17 jupiter kernel: RIP: 0033:0x564111720e3f Dez 16 03:58:17 jupiter kernel: Code: Unable to access opcode bytes at 0x564111720e15. Dez 16 03:58:17 jupiter kernel: RSP: 002b:000056410b1fda00 EFLAGS: 00000293 ORIG_RAX: 0000000000000007 Dez 16 03:58:17 jupiter kernel: RAX: fffffffffffffdfc RBX: 0000564131839600 RCX: 0000564111720e3f Dez 16 03:58:17 jupiter kernel: RDX: 00000000ffffffff RSI: 0000000000000001 RDI: 000056410b1fda48 Dez 16 03:58:17 jupiter kernel: RBP: 000056410b1fdb20 R08: 0000000000000000 R09: 0000000000000081 Dez 16 03:58:17 jupiter kernel: R10: 0000000000000000 R11: 0000000000000293 R12: 000056410b1fda48 Dez 16 03:58:17 jupiter kernel: R13: 0000000000000000 R14: 0000000000000000 R15: 0000564131839618 Dez 16 03:58:17 jupiter kernel: </TASK> Dez 16 03:58:17 jupiter kernel: ---[ end trace 0000000000000000 ]--- Dez 16 03:58:17 jupiter kernel: BUG: Bad rss-counter state mm:00000000bf899335 type:MM_ANONPAGES val:1 Dez 16 03:58:17 jupiter kernel: BUG: Bad rss-counter state mm:00000000bf899335 type:MM_SHMEMPAGES val:-1 Dez 16 03:58:17 jupiter kernel: BUG: Bad page cache in process QXcbEventQueue pfn:81fdec Dez 16 03:58:17 jupiter kernel: page: refcount:3 mapcount:1 mapping:00000000e6a99870 index:0x10 pfn:0x81fdec Dez 16 03:58:17 jupiter kernel: memcg:ffff8e09819f9000 Dez 16 03:58:17 jupiter kernel: aops:0xffffffffbb027a60 ino:20c5 Dez 16 03:58:17 jupiter kernel: flags: 0xa00000000002002d(locked|referenced|uptodate|lru|swapbacked|zone=2) Dez 16 03:58:17 jupiter kernel: raw: a00000000002002d ffffd680607facc8 ffffd6806075c308 ffff8e0805f5e0b8 Dez 16 03:58:17 jupiter kernel: raw: 0000000000000010 0000000000000000 0000000300000000 ffff8e09819f9000 Dez 16 03:58:17 jupiter kernel: page dumped because: still mapped when deleted

When trying to kill processes with sysrq or via kill command, those processes usually get stuck in state D and I get the following errors in dmesg:

Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 002c16ee Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 002c16c0 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 002c16c1 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 002c1760 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 40000000004ce36 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 40000000004ce1d Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 40000000004ce52 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 40000000004ced8 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 40000000004ced9 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 40000000004cec4 Dez 16 20:40:12 jupiter kernel: _swap_info_get: Unused swap offset entry 40000000004cec3

The system can then only be rebooted with alt+sysrq+b.

Regards, Kai