Fedora 30 (Thirty) Kernel 5.3.0-rc4 on an x86_64 (ttyS0) localhost login: [ 22.529023] kernel BUG at include/linux/mm.h:607! [ 22.529092] BUG: kernel NULL pointer dereference, address: 0000000000000008 [ 22.531789] #PF: supervisor read access in kernel mode [ 22.532954] #PF: error_code(0x0000) - not-present page [ 22.533722] PGD 0 P4D 0 [ 22.534097] Oops: 0000 [#1] SMP PTI [ 22.534585] CPU: 0 PID: 186 Comm: kworker/u8:4 Not tainted 5.3.0-rc4 #69 [ 22.535488] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-2.fc30 04/01/2014 [ 22.536633] Workqueue: zswap1 compact_page_work [ 22.537263] RIP: 0010:__list_add_valid+0x3/0x40 [ 22.537868] Code: f4 ff ff ff e9 3a ff ff ff 49 c7 07 00 00 00 00 41 c7 47 08 00 00 00 00 e9 66 ff ff ff e8 15 f6 b6 ff 90 90 90 90 90 49 89 d0 <48> 8b 52 08 48 39 f2 0f 85 7c 00 00 00 4c 8b 0a 4d 39 c1 0f 85 98 [ 22.540322] RSP: 0000:ffffa073802cfdf8 EFLAGS: 00010206 [ 22.540953] RAX: 00000000000003c0 RBX: ffff8d69ad052000 RCX: 8888888888888889 [ 22.541838] RDX: 0000000000000000 RSI: ffffc0737f6012e8 RDI: ffff8d69ad052000 [ 22.542747] RBP: ffffc0737f6012e8 R08: 0000000000000000 R09: 0000000000000001 [ 22.543660] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 22.544614] R13: ffff8d69bd0dfc00 R14: ffff8d69bd0dfc08 R15: ffff8d69ad052010 [ 22.545578] FS: 0000000000000000(0000) GS:ffff8d69be400000(0000) knlGS:0000000000000000 [ 22.546662] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.547452] CR2: 0000000000000008 CR3: 0000000035304001 CR4: 0000000000160ef0 [ 22.548488] Call Trace: [ 22.548845] do_compact_page+0x31e/0x430 [ 22.549406] process_one_work+0x272/0x5a0 [ 22.549972] worker_thread+0x50/0x3b0 [ 22.550488] kthread+0x108/0x140 [ 22.550939] ? process_one_work+0x5a0/0x5a0 [ 22.551531] ? kthread_park+0x80/0x80 [ 22.552034] ret_from_fork+0x3a/0x50 [ 22.552554] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ip6table_filter ip6_tables iptable_filter ip_tables crct10dif_pclmul crc32_pclmul ghash_clmulni_intel virtio_balloon virtio_net net_failover intel_agp intel_gtt failover qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw virtio_console virtio_blk agpgart qemu_fw_cfg [ 22.559889] CR2: 0000000000000008 [ 22.560328] ---[ end trace cfa4596e38137687 ]--- [ 22.560330] invalid opcode: 0000 [#2] SMP PTI [ 22.560981] RIP: 0010:__list_add_valid+0x3/0x40 [ 22.561515] CPU: 2 PID: 1063 Comm: stress Tainted: G D 5.3.0-rc4 #69 [ 22.562143] Code: f4 ff ff ff e9 3a ff ff ff 49 c7 07 00 00 00 00 41 c7 47 08 00 00 00 00 e9 66 ff ff ff e8 15 f6 b6 ff 90 90 90 90 90 49 89 d0 <48> 8b 52 08 48 39 f2 0f 85 7c 00 00 00 4c 8b 0a 4d 39 c1 0f 85 98 [ 22.563034] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-2.fc30 04/01/2014 [ 22.565759] RSP: 0000:ffffa073802cfdf8 EFLAGS: 00010206 [ 22.565760] RAX: 00000000000003c0 RBX: ffff8d69ad052000 RCX: 8888888888888889 [ 22.565761] RDX: 0000000000000000 RSI: ffffc0737f6012e8 RDI: ffff8d69ad052000 [ 22.565761] RBP: ffffc0737f6012e8 R08: 0000000000000000 R09: 0000000000000001 [ 22.565762] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 22.565763] R13: ffff8d69bd0dfc00 R14: ffff8d69bd0dfc08 R15: ffff8d69ad052010 [ 22.565765] FS: 0000000000000000(0000) GS:ffff8d69be400000(0000) knlGS:0000000000000000 [ 22.565766] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.565766] CR2: 0000000000000008 CR3: 0000000035304001 CR4: 0000000000160ef0 [ 22.565797] note: kworker/u8:4[186] exited with preempt_count 3 [ 22.581957] RIP: 0010:__free_pages+0x2d/0x30 [ 22.583146] Code: 00 00 8b 47 34 85 c0 74 15 f0 ff 4f 34 75 09 85 f6 75 06 e9 75 ff ff ff c3 e9 4f e2 ff ff 48 c7 c6 e8 8c 0a bb e8 d3 7f fd ff <0f> 0b 90 0f 1f 44 00 00 89 f1 41 bb 01 00 00 00 49 89 fa 41 d3 e3 [ 22.586649] RSP: 0018:ffffa073809ef4d0 EFLAGS: 00010246 [ 22.587963] RAX: 000000000000003e RBX: ffff8d6992d10000 RCX: 0000000000000006 [ 22.589579] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffbb0e5774 [ 22.591181] RBP: ffffd090004b4408 R08: 000000053ed5634a R09: 0000000000000000 [ 22.592781] R10: 0000000000000000 R11: 0000000000000000 R12: ffffd090004b4400 [ 22.594339] R13: ffff8d69bd0dfca0 R14: ffff8d69bd0dfc00 R15: ffff8d69bd0dfc08 [ 22.595832] FS: 00007f48316b7740(0000) GS:ffff8d69be800000(0000) knlGS:0000000000000000 [ 22.598649] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.601196] CR2: 00007fbcae5049b0 CR3: 00000000352fe002 CR4: 0000000000160ee0 [ 22.603539] Call Trace: [ 22.605103] z3fold_zpool_shrink+0x25f/0x540 [ 22.607218] zswap_frontswap_store+0x424/0x7c1 [ 22.609115] __frontswap_store+0xc4/0x162 [ 22.610819] swap_writepage+0x39/0x70 [ 22.612525] pageout.isra.0+0x12c/0x5d0 [ 22.613957] shrink_page_list+0x1124/0x1830 [ 22.615130] shrink_inactive_list+0x1da/0x460 [ 22.616311] shrink_node_memcg+0x202/0x770 [ 22.617473] ? sched_clock_cpu+0xc/0xc0 [ 22.619145] shrink_node+0xdc/0x4a0 [ 22.620279] do_try_to_free_pages+0xdb/0x3c0 [ 22.621450] try_to_free_pages+0x112/0x2e0 [ 22.622582] __alloc_pages_slowpath+0x422/0x1000 [ 22.623749] ? __lock_acquire+0x247/0x1900 [ 22.624876] __alloc_pages_nodemask+0x37f/0x400 [ 22.626007] alloc_pages_vma+0x79/0x1e0 [ 22.627040] __read_swap_cache_async+0x1ec/0x3e0 [ 22.628143] swap_cluster_readahead+0x184/0x330 [ 22.629234] ? find_held_lock+0x32/0x90 [ 22.630292] swapin_readahead+0x2b4/0x4e0 [ 22.631370] ? sched_clock_cpu+0xc/0xc0 [ 22.632379] do_swap_page+0x3ac/0xc30 [ 22.633356] __handle_mm_fault+0x8dd/0x1900 [ 22.634373] handle_mm_fault+0x159/0x340 [ 22.635714] do_user_addr_fault+0x1fe/0x480 [ 22.636738] do_page_fault+0x31/0x210 [ 22.637674] page_fault+0x3e/0x50 [ 22.638559] RIP: 0033:0x562b503bd298 [ 22.639476] Code: 7e 01 00 00 89 df e8 47 e1 ff ff 44 8b 2d 84 4d 00 00 4d 85 ff 7e 40 31 c0 eb 0f 0f 1f 80 00 00 00 00 4c 01 f0 49 39 c7 7e 2d <80> 7c 05 00 5a 4c 8d 54 05 00 74 ec 4c 89 14 24 45 85 ed 0f 89 de [ 22.642658] RSP: 002b:00007ffd83e31e80 EFLAGS: 00010206 [ 22.643900] RAX: 0000000000f09000 RBX: ffffffffffffffff RCX: 00007f48317b0156 [ 22.645242] RDX: 0000000000000000 RSI: 000000000b276000 RDI: 0000000000000000 [ 22.646571] RBP: 00007f4826441010 R08: 00007f4826441010 R09: 0000000000000000 [ 22.647888] R10: 00007f4827349010 R11: 0000000000000246 R12: 0000562b503bf004 [ 22.649210] R13: 0000000000000002 R14: 0000000000001000 R15: 000000000b275800 [ 22.650518] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ip6table_filter ip6_tables iptable_filter ip_tables crct10dif_pclmul crc32_pclmul ghash_clmulni_intel virtio_balloon virtio_net net_failover intel_agp intel_gtt failover qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw virtio_console virtio_blk agpgart qemu_fw_cfg [ 22.659276] ---[ end trace cfa4596e38137688 ]--- [ 22.660398] RIP: 0010:__list_add_valid+0x3/0x40 [ 22.661493] Code: f4 ff ff ff e9 3a ff ff ff 49 c7 07 00 00 00 00 41 c7 47 08 00 00 00 00 e9 66 ff ff ff e8 15 f6 b6 ff 90 90 90 90 90 49 89 d0 <48> 8b 52 08 48 39 f2 0f 85 7c 00 00 00 4c 8b 0a 4d 39 c1 0f 85 98 [ 22.664800] RSP: 0000:ffffa073802cfdf8 EFLAGS: 00010206 [ 22.666779] RAX: 00000000000003c0 RBX: ffff8d69ad052000 RCX: 8888888888888889 [ 22.669830] RDX: 0000000000000000 RSI: ffffc0737f6012e8 RDI: ffff8d69ad052000 [ 22.672878] RBP: ffffc0737f6012e8 R08: 0000000000000000 R09: 0000000000000001 [ 22.675920] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 22.678966] R13: ffff8d69bd0dfc00 R14: ffff8d69bd0dfc08 R15: ffff8d69ad052010 [ 22.682014] FS: 00007f48316b7740(0000) GS:ffff8d69be800000(0000) knlGS:0000000000000000 [ 22.685399] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.687991] CR2: 00007fbcae5049b0 CR3: 00000000352fe002 CR4: 0000000000160ee0 [ 22.691068] ------------[ cut here ]------------ [ 22.693308] WARNING: CPU: 2 PID: 1063 at kernel/exit.c:785 do_exit.cold+0xc/0x121 [ 22.696506] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ip6table_filter ip6_tables iptable_filter ip_tables crct10dif_pclmul crc32_pclmul ghash_clmulni_intel virtio_balloon virtio_net net_failover intel_agp intel_gtt failover qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw virtio_console virtio_blk agpgart qemu_fw_cfg [ 22.718213] CPU: 2 PID: 1063 Comm: stress Tainted: G D 5.3.0-rc4 #69 [ 22.721600] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-2.fc30 04/01/2014 [ 22.725269] RIP: 0010:do_exit.cold+0xc/0x121 [ 22.727494] Code: 1f 44 00 00 8b 4f 68 48 8b 57 60 8b 77 58 48 8b 7f 28 e9 58 ff ff ff 0f 1f 44 00 00 0f 0b 48 c7 c7 48 98 0a bb e8 c3 14 08 00 <0f> 0b e9 ee ee ff ff 65 48 8b 04 25 80 7f 01 00 8b 90 a8 08 00 00 [ 22.735422] RSP: 0018:ffffa073809efee0 EFLAGS: 00010246 [ 22.738012] RAX: 0000000000000024 RBX: ffff8d69b2e132c0 RCX: 0000000000000000 [ 22.741253] RDX: 0000000000000000 RSI: ffff8d69be9d89c8 RDI: ffff8d69be9d89c8 [ 22.744496] RBP: 000000000000000b R08: ffff8d69be9d89c8 R09: 0000000000000000 [ 22.747754] R10: 0000000000000001 R11: 0000000000000000 R12: 000000000000000b [ 22.751004] R13: ffffffffbb0aba78 R14: ffff8d69b2e132c0 R15: 0000000000000000 [ 22.754253] FS: 00007f48316b7740(0000) GS:ffff8d69be800000(0000) knlGS:0000000000000000 [ 22.757831] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.760629] CR2: 00007fbcae5049b0 CR3: 00000000352fe002 CR4: 0000000000160ee0 [ 22.763902] Call Trace: [ 22.765588] rewind_stack_do_exit+0x17/0x20 [ 22.767874] irq event stamp: 1368024 [ 22.769903] hardirqs last enabled at (1368023): [] console_unlock+0x43f/0x590 [ 22.773699] hardirqs last disabled at (1368024): [] trace_hardirqs_off_thunk+0x1a/0x20 [ 22.777731] softirqs last enabled at (1367996): [] __do_softirq+0x351/0x451 [ 22.781483] softirqs last disabled at (1367983): [] irq_exit+0xf1/0x100 [ 22.785088] ---[ end trace cfa4596e38137689 ]--- [ 47.516736] watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [stress:1066] [ 47.522992] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ip6table_filter ip6_tables iptable_filter ip_tables crct10dif_pclmul crc32_pclmul ghash_clmulni_intel virtio_balloon virtio_net net_failover intel_agp intel_gtt failover qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw virtio_console virtio_blk agpgart qemu_fw_cfg [ 47.568388] irq event stamp: 1887610 [ 47.571970] hardirqs last enabled at (1887609): [] _raw_spin_unlock_irqrestore+0x43/0x50 [ 47.578749] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [stress:1064] [ 47.580285] hardirqs last disabled at (1887610): [] __schedule+0xc4/0x8a0 [ 47.583634] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ip6table_filter ip6_tables iptable_filter ip_tables crct10dif_pclmul crc32_pclmul ghash_clmulni_intel virtio_balloon virtio_net net_failover intel_agp intel_gtt failover qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw virtio_console virtio_blk agpgart qemu_fw_cfg [ 47.589879] softirqs last enabled at (1887414): [] __do_softirq+0x351/0x451 [ 47.613664] irq event stamp: 1383450 [ 47.613668] hardirqs last enabled at (1383449): [] _raw_spin_unlock_irq+0x29/0x40 [ 47.620211] softirqs last disabled at (1887271): [] irq_exit+0xf1/0x100 [ 47.622419] hardirqs last disabled at (1383450): [] __schedule+0xc4/0x8a0 [ 47.622422] softirqs last enabled at (1383396): [] __do_softirq+0x351/0x451 [ 47.629329] CPU: 0 PID: 1066 Comm: stress Tainted: G D W 5.3.0-rc4 #69 [ 47.633216] softirqs last disabled at (1383305): [] irq_exit+0xf1/0x100 [ 47.633219] CPU: 1 PID: 1064 Comm: stress Tainted: G D W 5.3.0-rc4 #69 [ 47.639764] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [stress:1065] [ 47.639765] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ip6table_filter ip6_tables iptable_filter ip_tables crct10dif_pclmul crc32_pclmul ghash_clmulni_intel virtio_balloon virtio_net net_failover intel_agp intel_gtt failover qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw virtio_console virtio_blk agpgart qemu_fw_cfg [ 47.639781] irq event stamp: 1376134 [ 47.639784] hardirqs last enabled at (1376133): [] mod_delayed_work_on+0x8e/0xa0 [ 47.639787] hardirqs last disabled at (1376134): [] __schedule+0xc4/0x8a0 [ 47.639788] softirqs last enabled at (1375828): [] __do_softirq+0x351/0x451 [ 47.639790] softirqs last disabled at (1375805): [] irq_exit+0xf1/0x100 [ 47.639792] CPU: 2 PID: 1065 Comm: stress Tainted: G D W 5.3.0-rc4 #69 [ 47.639793] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-2.fc30 04/01/2014 [ 47.639796] RIP: 0010:queued_spin_lock_slowpath+0x184/0x1e0 [ 47.639797] Code: c1 ee 12 83 e0 03 83 ee 01 48 c1 e0 04 48 63 f6 48 05 00 c4 1e 00 48 03 04 f5 a0 96 18 bb 48 89 10 8b 42 08 85 c0 75 09 f3 90 <8b> 42 08 85 c0 74 f7 48 8b 02 48 85 c0 74 8b 48 89 c6 0f 18 08 eb [ 47.639798] RSP: 0018:ffffa07380a0f4a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 47.639799] RAX: 0000000000000000 RBX: ffff8d69bd0dfc08 RCX: 00000000000c0000 [ 47.639800] RDX: ffff8d69be9ec400 RSI: 0000000000000000 RDI: ffff8d69bd0dfc08 [ 47.639800] RBP: ffff8d69bd0dfc08 R08: 00000000000c0000 R09: 0000000000000000 [ 47.639801] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8d69bd0dfc20 [ 47.639802] R13: ffff8d69bd0dfca0 R14: ffff8d69bd0dfc00 R15: ffff8d69bd0dfc08 [ 47.639804] FS: 00007f48316b7740(0000) GS:ffff8d69be800000(0000) knlGS:0000000000000000 [ 47.639805] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.639805] CR2: 00007fba36dd7de0 CR3: 000000003510e006 CR4: 0000000000160ee0 [ 47.639806] Call Trace: [ 47.639809] do_raw_spin_lock+0xab/0xb0 [ 47.639812] _raw_spin_lock+0x63/0x80 [ 47.639816] z3fold_zpool_shrink+0x303/0x540 [ 47.639820] zswap_frontswap_store+0x424/0x7c1 [ 47.639823] __frontswap_store+0xc4/0x162 [ 47.639825] swap_writepage+0x39/0x70 [ 47.639827] pageout.isra.0+0x12c/0x5d0 [ 47.639831] shrink_page_list+0x1124/0x1830 [ 47.639835] shrink_inactive_list+0x1da/0x460 [ 47.639836] ? lruvec_lru_size+0x10/0x130 [ 47.639839] shrink_node_memcg+0x202/0x770 [ 47.639843] ? sched_clock_cpu+0xc/0xc0 [ 47.639847] shrink_node+0xdc/0x4a0 [ 47.639850] do_try_to_free_pages+0xdb/0x3c0 [ 47.639853] try_to_free_pages+0x112/0x2e0 [ 47.639856] __alloc_pages_slowpath+0x422/0x1000 [ 47.639858] ? __lock_acquire+0x247/0x1900 [ 47.639863] __alloc_pages_nodemask+0x37f/0x400 [ 47.639867] alloc_pages_vma+0x79/0x1e0 [ 47.639869] __read_swap_cache_async+0x1ec/0x3e0 [ 47.639871] swap_cluster_readahead+0x184/0x330 [ 47.639873] ? find_held_lock+0x32/0x90 [ 47.639876] swapin_readahead+0x2b4/0x4e0 [ 47.639878] ? sched_clock_cpu+0xc/0xc0 [ 47.639882] do_swap_page+0x3ac/0xc30 [ 47.639885] __handle_mm_fault+0x8dd/0x1900 [ 47.639889] handle_mm_fault+0x159/0x340 [ 47.639891] do_user_addr_fault+0x1fe/0x480 [ 47.639894] do_page_fault+0x31/0x210 [ 47.639897] page_fault+0x3e/0x50 [ 47.639898] RIP: 0033:0x562b503bd298 [ 47.639900] Code: 7e 01 00 00 89 df e8 47 e1 ff ff 44 8b 2d 84 4d 00 00 4d 85 ff 7e 40 31 c0 eb 0f 0f 1f 80 00 00 00 00 4c 01 f0 49 39 c7 7e 2d <80> 7c 05 00 5a 4c 8d 54 05 00 74 ec 4c 89 14 24 45 85 ed 0f 89 de [ 47.639900] RSP: 002b:00007ffd83e31e80 EFLAGS: 00010206 [ 47.639901] RAX: 00000000011bb000 RBX: ffffffffffffffff RCX: 00007f48317b0156 [ 47.639902] RDX: 0000000000000000 RSI: 000000000b276000 RDI: 0000000000000000 [ 47.639902] RBP: 00007f4826441010 R08: 00007f4826441010 R09: 0000000000000000 [ 47.639903] R10: 00007f48275fb010 R11: 0000000000000246 R12: 0000562b503bf004 [ 47.639903] R13: 0000000000000002 R14: 0000000000001000 R15: 000000000b275800 [ 47.640770] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-2.fc30 04/01/2014 [ 47.645104] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-2.fc30 04/01/2014 [ 47.645108] RIP: 0010:queued_spin_lock_slowpath+0x184/0x1e0 [ 47.651057] RIP: 0010:queued_spin_lock_slowpath+0x124/0x1e0 [ 47.654927] Code: c1 ee 12 83 e0 03 83 ee 01 48 c1 e0 04 48 63 f6 48 05 00 c4 1e 00 48 03 04 f5 a0 96 18 bb 48 89 10 8b 42 08 85 c0 75 09 f3 90 <8b> 42 08 85 c0 74 f7 48 8b 02 48 85 c0 74 8b 48 89 c6 0f 18 08 eb [ 47.660823] Code: 00 89 1d 00 eb a1 41 83 c0 01 c1 e1 10 41 c1 e0 12 44 09 c1 89 c8 c1 e8 10 66 87 47 02 89 c6 c1 e6 10 75 3c 31 f6 eb 02 f3 90 <8b> 07 66 85 c0 75 f7 41 89 c0 66 45 31 c0 41 39 c8 74 64 c6 07 01 [ 47.664219] RSP: 0000:ffffa073809f74a0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 47.700778] watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [kcompactd0:36] [ 47.700779] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ip6table_filter ip6_tables iptable_filter ip_tables crct10dif_pclmul crc32_pclmul ghash_clmulni_intel virtio_balloon virtio_net net_failover intel_agp intel_gtt failover qxl drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw virtio_console virtio_blk agpgart qemu_fw_cfg [ 47.700794] irq event stamp: 230655 [ 47.700798] hardirqs last enabled at (230655): [] _raw_spin_unlock_irqrestore+0x43/0x50 [ 47.700800] hardirqs last disabled at (230654): [] _raw_spin_lock_irqsave+0x16/0x80 [ 47.700801] softirqs last enabled at (230330): [] __do_softirq+0x351/0x451 [ 47.700803] softirqs last disabled at (230317): [] irq_exit+0xf1/0x100 [ 47.700805] CPU: 3 PID: 36 Comm: kcompactd0 Tainted: G D W L 5.3.0-rc4 #69 [ 47.700805] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-2.fc30 04/01/2014 [ 47.700808] RIP: 0010:queued_spin_lock_slowpath+0x42/0x1e0 [ 47.700809] Code: 49 f0 0f ba 2f 08 0f 92 c0 0f b6 c0 c1 e0 08 89 c2 8b 07 30 e4 09 d0 a9 00 01 ff ff 75 23 85 c0 74 0e 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 65 48 ff 05 18 f8 09 46 [ 47.700810] RSP: 0000:ffffa0738014fb60 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 47.700811] RAX: 0000000000080101 RBX: ffff8d69bd0dfc08 RCX: 8888888888888889 [ 47.700811] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8d69bd0dfc08 [ 47.700812] RBP: ffff8d69bd0dfc08 R08: 000000053ed6a652 R09: 0000000000000000 [ 47.700812] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8d69bd0dfc20 [ 47.700813] R13: ffff8d69b5803350 R14: ffff8d69a2d93010 R15: ffffd090008b64c0 [ 47.700815] FS: 0000000000000000(0000) GS:ffff8d69bea00000(0000) knlGS:0000000000000000 [ 47.700816] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.700817] CR2: 00007f4826f45010 CR3: 000000000b212006 CR4: 0000000000160ee0 [ 47.700817] Call Trace: [ 47.700819] do_raw_spin_lock+0xab/0xb0 [ 47.700822] _raw_spin_lock+0x63/0x80 [ 47.700825] z3fold_page_migrate+0x28d/0x460 [ 47.700829] move_to_new_page+0x2f3/0x420 [ 47.700832] ? debug_check_no_obj_freed+0x107/0x1d8 [ 47.700835] migrate_pages+0x991/0xfb0 [ 47.700838] ? isolate_freepages_block+0x410/0x410 [ 47.700840] ? __ClearPageMovable+0x90/0x90 [ 47.700843] compact_zone+0x74c/0xef0 [ 47.700848] kcompactd_do_work+0x14c/0x3c0 [ 47.700853] kcompactd+0xbe/0x2b0 [ 47.700855] ? finish_wait+0x90/0x90 [ 47.700858] kthread+0x108/0x140 [ 47.700860] ? kcompactd_do_work+0x3c0/0x3c0 [ 47.700861] ? kthread_park+0x80/0x80 [ 47.700863] ret_from_fork+0x3a/0x50 [ 47.703372] RSP: 0000:ffffa07380a17698 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 47.705576] RAX: 0000000000000000 RBX: ffff8d69bd0dfc08 RCX: 0000000000080000 [ 47.705577] RDX: ffff8d69be7ec400 RSI: 0000000000000002 RDI: ffff8d69bd0dfc08 [ 47.712349] RAX: 0000000000080101 RBX: ffff8d69bd0dfc08 RCX: 0000000000040000 [ 47.716287] RBP: ffff8d69bd0dfc08 R08: 0000000000080000 R09: 0000000000000000 [ 47.716288] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8d69bd0dfc20 [ 47.722821] RDX: ffff8d69be5ec400 RSI: 0000000000000000 RDI: ffff8d69bd0dfc08 [ 47.726705] R13: ffff8d69bd0dfc08 R14: 0000000000000000 R15: ffff8d69bd306000 [ 47.726708] FS: 00007f48316b7740(0000) GS:ffff8d69be600000(0000) knlGS:0000000000000000 [ 47.732581] RBP: ffff8d69bd0dfc08 R08: 0000000000040000 R09: 0000000000000000 [ 47.732582] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8d69bd0dfc20 [ 47.736598] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.736600] CR2: 00007f4829892010 CR3: 00000000350d4003 CR4: 0000000000160ee0 [ 47.741064] R13: ffff8d69bd0dfca0 R14: ffff8d69bd0dfc00 R15: ffff8d69bd0dfc08 [ 47.749689] Call Trace: [ 47.755239] FS: 00007f48316b7740(0000) GS:ffff8d69be400000(0000) knlGS:0000000000000000 [ 47.758756] do_raw_spin_lock+0xab/0xb0 [ 47.764302] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.767811] _raw_spin_lock+0x63/0x80 [ 47.772979] CR2: 0000000000000008 CR3: 00000000380ac005 CR4: 0000000000160ef0 [ 47.772982] Call Trace: [ 47.776514] z3fold_zpool_malloc+0xdc/0xa40 [ 47.782703] do_raw_spin_lock+0xab/0xb0 [ 47.785710] zswap_frontswap_store+0x2e8/0x7c1 [ 47.791314] _raw_spin_lock+0x63/0x80 [ 47.793107] __frontswap_store+0xc4/0x162 [ 47.796499] z3fold_zpool_shrink+0x303/0x540 [ 47.798692] swap_writepage+0x39/0x70 [ 47.802320] zswap_frontswap_store+0x424/0x7c1 [ 47.804759] pageout.isra.0+0x12c/0x5d0 [ 47.808202] __frontswap_store+0xc4/0x162 [ 47.810332] shrink_page_list+0x1124/0x1830 [ 47.813626] swap_writepage+0x39/0x70 [ 47.815918] shrink_inactive_list+0x1da/0x460 [ 47.819522] pageout.isra.0+0x12c/0x5d0 [ 47.821714] shrink_node_memcg+0x202/0x770 [ 47.825119] shrink_page_list+0x1124/0x1830 [ 47.827210] ? mem_cgroup_iter+0x8a/0x710 [ 47.830157] shrink_inactive_list+0x1da/0x460 [ 47.832377] shrink_node+0xdc/0x4a0 [ 47.835702] ? lruvec_lru_size+0x10/0x130 [ 47.838040] do_try_to_free_pages+0xdb/0x3c0 [ 47.841374] shrink_node_memcg+0x202/0x770 [ 47.843667] try_to_free_pages+0x112/0x2e0 [ 47.846805] shrink_node+0xdc/0x4a0 [ 47.849115] __alloc_pages_slowpath+0x422/0x1000 [ 47.852690] do_try_to_free_pages+0xdb/0x3c0 [ 47.854689] __alloc_pages_nodemask+0x37f/0x400 [ 47.857902] try_to_free_pages+0x112/0x2e0 [ 47.859863] alloc_pages_vma+0x79/0x1e0 [ 47.862806] __alloc_pages_slowpath+0x422/0x1000 [ 47.864850] __read_swap_cache_async+0x1ec/0x3e0 [ 47.867949] __alloc_pages_nodemask+0x37f/0x400 [ 47.869963] swap_cluster_readahead+0x184/0x330 [ 47.872753] alloc_pages_vma+0x79/0x1e0 [ 47.874453] swapin_readahead+0x2b4/0x4e0 [ 47.877285] __handle_mm_fault+0x99c/0x1900 [ 47.885233] do_swap_page+0x3ac/0xc30 [ 47.889167] handle_mm_fault+0x159/0x340 [ 47.892265] ? __switch_to_asm+0x40/0x70 [ 47.897433] do_user_addr_fault+0x1fe/0x480 [ 47.900494] ? __switch_to_asm+0x34/0x70 [ 47.900496] ? __switch_to_asm+0x40/0x70 [ 47.905647] do_page_fault+0x31/0x210 [ 47.908690] ? __switch_to_asm+0x34/0x70 [ 47.908692] __handle_mm_fault+0x8dd/0x1900 [ 47.914600] page_fault+0x3e/0x50 [ 47.918164] handle_mm_fault+0x159/0x340 [ 47.922255] RIP: 0033:0x562b503bd250 [ 47.924731] do_user_addr_fault+0x1fe/0x480 [ 47.937476] Code: 0f 84 88 02 00 00 8b 54 24 0c 31 c0 85 d2 0f 94 c0 89 04 24 41 83 fd 02 0f 8f f1 00 00 00 31 c0 4d 85 ff 7e 12 0f 1f 44 00 00 44 05 00 5a 4c 01 f0 49 39 c7 7f f3 48 85 db 0f 84 dd 01 00 00 [ 47.944155] do_page_fault+0x31/0x210 [ 47.947252] RSP: 002b:00007ffd83e31e80 EFLAGS: 00010206 [ 47.949763] page_fault+0x3e/0x50 [ 47.970920] RAX: 000000000885c000 RBX: ffffffffffffffff RCX: 00007f48317b0156 [ 47.972527] RIP: 0033:0x562b503bd298 [ 47.976434] RDX: 0000000000000000 RSI: 000000000b276000 RDI: 0000000000000000 [ 47.979642] Code: 7e 01 00 00 89 df e8 47 e1 ff ff 44 8b 2d 84 4d 00 00 4d 85 ff 7e 40 31 c0 eb 0f 0f 1f 80 00 00 00 00 4c 01 f0 49 39 c7 7e 2d <80> 7c 05 00 5a 4c 8d 54 05 00 74 ec 4c 89 14 24 45 85 ed 0f 89 de [ 47.983184] RBP: 00007f4826441010 R08: 00007f4826441010 R09: 0000000000000000 [ 47.983185] R10: 0000000000000022 R11: 0000000000000246 R12: 0000562b503bf004 [ 47.986079] RSP: 002b:00007ffd83e31e80 EFLAGS: 00010206 [ 47.989382] R13: 0000000000000002 R14: 0000000000001000 R15: 000000000b275800 [ 47.992427] RAX: 0000000003451000 RBX: ffffffffffffffff RCX: 00007f48317b0156 [ 47.992428] RDX: 0000000000000000 RSI: 000000000b276000 RDI: 0000000000000000 [ 48.222105] RBP: 00007f4826441010 R08: 00007f4826441010 R09: 0000000000000000 [ 48.224588] R10: 00007f4829891010 R11: 0000000000000246 R12: 0000562b503bf004 [ 48.227066] R13: 0000000000000002 R14: 0000000000001000 R15: 000000000b275800