------------[ cut here ]------------ WARNING: CPU: 1 PID: 7941 at include/linux/gfp.h:221 __alloc_pages_node include/linux/gfp.h:221 [inline] WARNING: CPU: 1 PID: 7941 at include/linux/gfp.h:221 hpage_collapse_alloc_page mm/khugepaged.c:807 [inline] WARNING: CPU: 1 PID: 7941 at include/linux/gfp.h:221 alloc_charge_hpage+0x5a4/0x938 mm/khugepaged.c:963 Modules linked in: CPU: 1 PID: 7941 Comm: syz-executor.1 Not tainted 6.1.0-rc6-syzkaller-32653-g65762d97e6fa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __alloc_pages_node include/linux/gfp.h:221 [inline] pc : hpage_collapse_alloc_page mm/khugepaged.c:807 [inline] pc : alloc_charge_hpage+0x5a4/0x938 mm/khugepaged.c:963 lr : __alloc_pages_node include/linux/gfp.h:221 [inline] lr : hpage_collapse_alloc_page mm/khugepaged.c:807 [inline] lr : alloc_charge_hpage+0x5a4/0x938 mm/khugepaged.c:963 sp : ffff8000140fb930 x29: ffff8000140fb930 x28: 0000000020600000 x27: 0000000000000000 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000001 x23: 0000000000000001 x22: 0000000000000000 x21: 00000000003c24ca x20: ffff0000c9a00540 x19: ffff8000140fba30 x18: 00000000000003b6 x17: ffff80000c0cd83c x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000003 x12: ffff80000d93bd70 x11: ff8080000856a8a4 x10: 0000000000000000 x9 : ffff80000856a8a4 x8 : ffff0001033c4ec0 x7 : ffff80000856a28c x6 : 0000000000000000 x5 : 0000000000000000 x4 : ffff0000e2aac900 x3 : 0000000000000600 x2 : ffff0000e2aac900 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __alloc_pages_node include/linux/gfp.h:221 [inline] hpage_collapse_alloc_page mm/khugepaged.c:807 [inline] alloc_charge_hpage+0x5a4/0x938 mm/khugepaged.c:963 collapse_file+0xd0/0x2ffc mm/khugepaged.c:1715 hpage_collapse_scan_file+0x938/0xb64 mm/khugepaged.c:2156 madvise_collapse+0x328/0x864 mm/khugepaged.c:2611 madvise_vma_behavior+0x148/0x7f4 mm/madvise.c:1076 madvise_walk_vmas mm/madvise.c:1250 [inline] do_madvise+0x438/0x5c0 mm/madvise.c:1429 __do_sys_madvise mm/madvise.c:1442 [inline] __se_sys_madvise mm/madvise.c:1440 [inline] __arm64_sys_madvise+0x2c/0x40 mm/madvise.c:1440 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 18292 hardirqs last enabled at (18291): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1366 [inline] hardirqs last enabled at (18291): [] finish_lock_switch+0x94/0xe8 kernel/sched/core.c:4968 hardirqs last disabled at (18292): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (13242): [] _stext+0x2e4/0x37c softirqs last disabled at (13125): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address 0000000000002818 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=00000001432b0000 [0000000000002818] pgd=0800000143638003, p4d=0800000143638003, pud=0800000122b7e003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 7941 Comm: syz-executor.1 Tainted: G W 6.1.0-rc6-syzkaller-32653-g65762d97e6fa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : zonelist_zone_idx include/linux/mmzone.h:1448 [inline] pc : __next_zones_zonelist+0x24/0x58 mm/mmzone.c:68 lr : next_zones_zonelist include/linux/mmzone.h:1481 [inline] lr : first_zones_zonelist include/linux/mmzone.h:1505 [inline] lr : prepare_alloc_pages+0x1bc/0x244 mm/page_alloc.c:5340 sp : ffff8000140fb860 x29: ffff8000140fb860 x28: 0000000020600000 x27: 0000000000000000 x26: 0000000000000000 x25: ffff80000d379000 x24: 0000000000000008 x23: ffff8000084c059c x22: 0000000000000000 x21: ffff8000140fb8e4 x20: 00000000003c24ca x19: ffff8000140fb8b8 x18: 00000000000003b6 x17: ffff80000c0cd83c x16: ffff80000dbe6158 x15: ffff0001033c4ec0 x14: 0000000000000010 x13: 0000000000000000 x12: ffff0001033c4ec0 x11: 0000000000000000 x10: 0000000000000081 x9 : 0000000000000000 x8 : 0000000000000000 x7 : ffff8000084bf248 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001033c60c8 x1 : 0000000000000003 x0 : 0000000000002810 Call trace: __next_zones_zonelist+0x24/0x58 mm/mmzone.c:70 __alloc_pages+0xa4/0x1fc mm/page_alloc.c:5544 __alloc_pages_node include/linux/gfp.h:223 [inline] hpage_collapse_alloc_page mm/khugepaged.c:807 [inline] alloc_charge_hpage+0x318/0x938 mm/khugepaged.c:963 collapse_file+0xd0/0x2ffc mm/khugepaged.c:1715 hpage_collapse_scan_file+0x938/0xb64 mm/khugepaged.c:2156 madvise_collapse+0x328/0x864 mm/khugepaged.c:2611 madvise_vma_behavior+0x148/0x7f4 mm/madvise.c:1076 madvise_walk_vmas mm/madvise.c:1250 [inline] do_madvise+0x438/0x5c0 mm/madvise.c:1429 __do_sys_madvise mm/madvise.c:1442 [inline] __se_sys_madvise mm/madvise.c:1440 [inline] __arm64_sys_madvise+0x2c/0x40 mm/madvise.c:1440 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: 6b01011f 54ffffa8 1400000d 91004000 (b9400808) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 6b01011f cmp w8, w1 4: 54ffffa8 b.hi 0xfffffffffffffff8 // b.pmore 8: 1400000d b 0x3c c: 91004000 add x0, x0, #0x10 * 10: b9400808 ldr w8, [x0, #8] <-- trapping instruction