------------[ cut here ]------------ WARNING: CPU: 0 PID: 4682 at mm/page_alloc.c:5476 current_gfp_context include/linux/sched/mm.h:-1 [inline] WARNING: CPU: 0 PID: 4682 at mm/page_alloc.c:5476 __alloc_pages+0x39f/0x480 mm/page_alloc.c:5488 Modules linked in: CPU: 0 PID: 4682 Comm: syz.3.143 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__alloc_pages+0x39f/0x480 mm/page_alloc.c:5476 Code: 31 ff e9 b1 fe ff ff e8 df 0a 0c 08 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 4f fd ff ff 4c 89 e7 e8 06 d4 09 00 e9 42 fd ff ff <0f> 0b 45 31 ff e9 ee fe ff ff 65 44 8b 2d e7 ab 4d 7e 41 83 fd 08 RSP: 0018:ffffc9000320fa00 EFLAGS: 00010246 RAX: ffffc9000320fa40 RBX: 1ffff92000641f44 RCX: 0000000000000000 RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc9000320fa68 RBP: ffffc9000320faf0 R08: ffffc9000320fa67 R09: ffffc9000320fa40 R10: dffffc0000000000 R11: fffff52000641f4d R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000040cc0 R15: 0000000000000013 FS: 00007f24b0a886c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f374cd052f8 CR3: 0000000024e59000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kmalloc_order+0x40/0x150 mm/slab_common.c:986 kmalloc_order_trace+0x14/0xf0 mm/slab_common.c:1002 memdup_user_nul+0x23/0xf0 mm/util.c:260 bitmap_parse_user+0x1f/0x60 lib/bitmap.c:453 cpumask_parse_user include/linux/cpumask.h:623 [inline] write_irq_affinity kernel/irq/proc.c:153 [inline] irq_affinity_proc_write+0x107/0x1d0 kernel/irq/proc.c:182 pde_write fs/proc/inode.c:335 [inline] proc_reg_write+0x1dd/0x2c0 fs/proc/inode.c:347 vfs_write+0x304/0xd70 fs/read_write.c:592 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f24b2830159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f24b0a88028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f24b2ab7fa0 RCX: 00007f24b2830159 RDX: 00000000fffffdd4 RSI: 0000200000000340 RDI: 0000000000000004 RBP: 00007f24b28c7024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f24b2ab8038 R14: 00007f24b2ab7fa0 R15: 00007ffe546fa9e8