<div dir="ltr"><div class="gmail_quote"><div dir="ltr">I have a Fedora 41 laptop with 32GB of ram. On startup, this shows in the journal: ``` nov. 05 13:58:32 D2S3Q34 zram-generator[1059]: Error: Failed to configure disk size into /sys/block/zram0/disksize nov. 05 13:58:32 D2S3Q34 zram-generator[1059]: Caused by: nov. 05 13:58:32 D2S3Q34 zram-generator[1059]: Cannot allocate memory (os error 12) nov. 05 13:58:32 D2S3Q34 kernel: zram-generator: vmalloc error: size 131072000000000, exceeds total pages, mode:0xdc0(GFP_KERNEL|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0 nov. 05 13:58:32 D2S3Q34 kernel: CPU: 3 UID: 0 PID: 1059 Comm: zram-generator Not tainted 6.11.5-300.fc41.x86_64 #1 nov. 05 13:58:32 D2S3Q34 kernel: Hardware name: Dell Inc. Latitude 7340/0C5RG2, BIOS 1.17.0 08/12/2024 nov. 05 13:58:32 D2S3Q34 kernel: Call Trace: nov. 05 13:58:32 D2S3Q34 kernel: <TASK> nov. 05 13:58:32 D2S3Q34 kernel: dump_stack_lvl+0x5d/0x80 nov. 05 13:58:32 D2S3Q34 kernel: warn_alloc+0x164/0x190 nov. 05 13:58:32 D2S3Q34 kernel: __vmalloc_node_range_noprof+0x82a/0x870 nov. 05 13:58:32 D2S3Q34 kernel: ? disksize_store+0x80/0x260 [zram] nov. 05 13:58:32 D2S3Q34 kernel: ? __pfx_kfree_link+0x10/0x10 nov. 05 13:58:32 D2S3Q34 kernel: ? simple_strntoull+0x8a/0xa0 nov. 05 13:58:32 D2S3Q34 kernel: __vmalloc_node_noprof+0x4e/0x70 nov. 05 13:58:32 D2S3Q34 kernel: ? disksize_store+0x80/0x260 [zram] nov. 05 13:58:32 D2S3Q34 kernel: disksize_store+0x80/0x260 [zram] nov. 05 13:58:32 D2S3Q34 kernel: kernfs_fop_write_iter+0x13e/0x1f0 nov. 05 13:58:32 D2S3Q34 kernel: vfs_write+0x291/0x460 nov. 05 13:58:32 D2S3Q34 kernel: ksys_write+0x6d/0xf0 nov. 05 13:58:32 D2S3Q34 kernel: do_syscall_64+0x82/0x160 nov. 05 13:58:32 D2S3Q34 kernel: ? __count_memcg_events+0x75/0x130 nov. 05 13:58:32 D2S3Q34 kernel: ? count_memcg_events.constprop.0+0x1a/0x30 nov. 05 13:58:32 D2S3Q34 kernel: ? handle_mm_fault+0x21b/0x330 nov. 05 13:58:32 D2S3Q34 audit: BPF prog-id=7 op=UNLOAD nov. 05 13:58:32 D2S3Q34 audit: BPF prog-id=6 op=UNLOAD nov. 05 13:58:32 D2S3Q34 audit: BPF prog-id=38 op=LOAD nov. 05 13:58:32 D2S3Q34 audit: BPF prog-id=39 op=LOAD<div>.....</div><div>nov. 05 13:58:32 D2S3Q34 zram-generator[1059]: Cannot allocate memory (os error 12) nov. 05 13:58:32 D2S3Q34 kernel: zram-generator: vmalloc error: size 131072000000000, exceeds total pages, mode:0xdc0(GFP_KERNEL|__GFP_ZERO), nodemask=(null),cpuset=/,mems_allowed=0 nov. 05 13:58:32 D2S3Q34 kernel: CPU: 3 UID: 0 PID: 1059 Comm: zram-generator Not tainted 6.11.5-300.fc41.x86_64 #1 nov. 05 13:58:32 D2S3Q34 kernel: Hardware name: Dell Inc. Latitude 7340/0C5RG2, BIOS 1.17.0 08/12/2024 nov. 05 13:58:32 D2S3Q34 kernel: Call Trace: nov. 05 13:58:32 D2S3Q34 kernel: <TASK> nov. 05 13:58:32 D2S3Q34 kernel: dump_stack_lvl+0x5d/0x80 nov. 05 13:58:32 D2S3Q34 kernel: warn_alloc+0x164/0x190 nov. 05 13:58:32 D2S3Q34 kernel: __vmalloc_node_range_noprof+0x82a/0x870 nov. 05 13:58:32 D2S3Q34 kernel: ? disksize_store+0x80/0x260 [zram] nov. 05 13:58:32 D2S3Q34 kernel: ? __pfx_kfree_link+0x10/0x10 nov. 05 13:58:32 D2S3Q34 kernel: ? simple_strntoull+0x8a/0xa0 nov. 05 13:58:32 D2S3Q34 kernel: __vmalloc_node_noprof+0x4e/0x70 nov. 05 13:58:32 D2S3Q34 kernel: ? disksize_store+0x80/0x260 [zram] nov. 05 13:58:32 D2S3Q34 kernel: disksize_store+0x80/0x260 [zram] nov. 05 13:58:32 D2S3Q34 kernel: kernfs_fop_write_iter+0x13e/0x1f0 nov. 05 13:58:32 D2S3Q34 kernel: vfs_write+0x291/0x460 nov. 05 13:58:32 D2S3Q34 kernel: ksys_write+0x6d/0xf0 nov. 05 13:58:32 D2S3Q34 kernel: do_syscall_64+0x82/0x160 nov. 05 13:58:32 D2S3Q34 kernel: ? __count_memcg_events+0x75/0x130 nov. 05 13:58:32 D2S3Q34 kernel: ? count_memcg_events.constprop.0+0x1a/0x30 nov. 05 13:58:32 D2S3Q34 kernel: ? handle_mm_fault+0x21b/0x330 nov. 05 13:58:32 D2S3Q34 kernel: ? do_user_addr_fault+0x55a/0x7b0 nov. 05 13:58:32 D2S3Q34 kernel: ? exc_page_fault+0x7e/0x180 nov. 05 13:58:32 D2S3Q34 kernel: entry_SYSCALL_64_after_hwframe+0x76/0x7e nov. 05 13:58:32 D2S3Q34 kernel: RIP: 0033:0x7fc552663b44 nov. 05 13:58:32 D2S3Q34 kernel: Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d 25 85 10 00 00 74 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 55 48 89> nov. 05 13:58:32 D2S3Q34 kernel: RSP: 002b:00007ffe1a428ce8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 nov. 05 13:58:32 D2S3Q34 kernel: RAX: ffffffffffffffda RBX: 0000000000000011 RCX: 00007fc552663b44 nov. 05 13:58:32 D2S3Q34 kernel: RDX: 0000000000000011 RSI: 0000556daf5f3ba0 RDI: 0000000000000004 nov. 05 13:58:32 D2S3Q34 kernel: RBP: 00007ffe1a428ec0 R08: 0000000000000000 R09: 0000000000000011 nov. 05 13:58:32 D2S3Q34 kernel: R10: 00000000000001b6 R11: 0000000000000202 R12: 00007fc552663b30 nov. 05 13:58:32 D2S3Q34 kernel: R13: 7fffffffffffffff R14: 0000556daf5f3ba0 R15: 0000000000000004 nov. 05 13:58:32 D2S3Q34 kernel: </TASK> nov. 05 13:58:32 D2S3Q34 kernel: Mem-Info: nov. 05 13:58:32 D2S3Q34 kernel: active_anon:35693 inactive_anon:0 isolated_anon:0 active_file:17516 inactive_file:17165 isolated_file:0 unevictable:16134 dirty:408 writeback:0 slab_reclaimable:4435 slab_unreclaimable:27034 mapped:8471 shmem:13883 pagetables:854 sec_pagetables:779 bounce:0 kernel_misc_reclaimable:0 free:7946422 free_pcp:13028 free_cma:0 nov. 05 13:58:32 D2S3Q34 kernel: Node 0 active_anon:142772kB inactive_anon:0kB active_file:70064kB inactive_file:68660kB unevictable:64536kB isolated(anon):0kB isolated(file):0kB mapped:33884kB dirty:1632kB writ> nov. 05 13:58:32 D2S3Q34 kernel: Node 0 DMA free:11264kB boost:0kB min:32kB low:44kB high:56kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepen> nov. 05 13:58:32 D2S3Q34 kernel: lowmem_reserve[]: 0 1269 31618 0 0 nov. 05 13:58:32 D2S3Q34 kernel: Node 0 DMA32 free:1333468kB boost:0kB min:2712kB low:4012kB high:5312kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0k> nov. 05 13:58:32 D2S3Q34 kernel: lowmem_reserve[]: 0 0 30348 0 0 nov. 05 13:58:32 D2S3Q34 kernel: Node 0 Normal free:30440956kB boost:0kB min:64836kB low:95912kB high:126988kB reserved_highatomic:0KB active_anon:142772kB inactive_anon:0kB active_file:70064kB inactive_file:686> nov. 05 13:58:32 D2S3Q34 kernel: lowmem_reserve[]: 0 0 0 0 0 nov. 05 13:58:32 D2S3Q34 kernel: Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 2*4096kB (M) = 11264kB nov. 05 13:58:32 D2S3Q34 kernel: Node 0 DMA32: 4*4kB (M) 3*8kB (UM) 4*16kB (M) 5*32kB (M) 5*64kB (M) 4*128kB (M) 5*256kB (UM) 4*512kB (UM) 6*1024kB (UM) 2*2048kB (UM) 322*4096kB (M) = 1333576kB nov. 05 13:58:32 D2S3Q34 kernel: Node 0 Normal: 1*4kB (M) 2*8kB (UM) 0*16kB 15*32kB (UME) 45*64kB (UME) 24*128kB (UM) 12*256kB (UM) 14*512kB (UM) 25*1024kB (UM) 17*2048kB (UME) 7413*4096kB (UM) = 30440756kB nov. 05 13:58:32 D2S3Q34 kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB nov. 05 13:58:32 D2S3Q34 kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB nov. 05 13:58:32 D2S3Q34 kernel: 51119 total pagecache pages nov. 05 13:58:32 D2S3Q34 kernel: 0 pages in swap cache nov. 05 13:58:32 D2S3Q34 kernel: Free swap = 0kB nov. 05 13:58:32 D2S3Q34 kernel: Total swap = 0kB nov. 05 13:58:32 D2S3Q34 kernel: 8283316 pages RAM nov. 05 13:58:32 D2S3Q34 kernel: 0 pages HighMem/MovableOnly nov. 05 13:58:32 D2S3Q34 kernel: 173505 pages reserved nov. 05 13:58:32 D2S3Q34 kernel: 0 pages cma reserved nov. 05 13:58:32 D2S3Q34 kernel: 0 pages hwpoisoned nov. 05 13:58:32 D2S3Q34 systemd[1]: systemd-zram-setup@zram0.service: Main process exited, code=exited, status=1/FAILURE nov. 05 13:58:32 D2S3Q34 systemd[1]: systemd-zram-setup@zram0.service: Failed with result 'exit-code'. nov. 05 13:58:32 D2S3Q34 systemd[1]: Failed to start systemd-zram-setup@zram0.service - Create swap on /dev/zram0. nov. 05 13:58:32 D2S3Q34 audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-zram-setup@zram0 comm="systemd" exe="/usr/lib/systemd/systemd" hostn> nov. 05 13:58:32 D2S3Q34 systemd[1]: Dependency failed for dev-zram0.swap - Compressed Swap on /dev/zram0. nov. 05 13:58:32 D2S3Q34 systemd[1]: dev-zram0.swap: Job dev-zram0.swap/start failed with result 'dependency'. nov. 05 13:58:32 D2S3Q34 systemd[1]: Reached target swap.target - Swaps. ```</div><div> </div><div>After starting up, I can execute this series of commands, and successfully create a 32GB swap: ```</div><div>sudo swapoff /dev/zram0 sudo zramctl --reset /dev/zram0 sudo zramctl --find --size 32G sudo mkswap /dev/zram0 sudo swapon /dev/zram0 ```</div></div> </div></div>