------------[ cut here ]------------
WARNING: CPU: 0 PID: 7749 at mm/page_alloc.c:5634 __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
Modules linked in:
CPU: 0 PID: 7749 Comm: syz.6.1091 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 22400005 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
lr : __alloc_pages+0xac/0x544 mm/page_alloc.c:5628
sp : ffff8000216f77c0
x29: ffff8000216f7880 x28: ffff80001539d000 x27: 1ffff00002a73a68
x26: ffff8000216f77e0 x25: dfff800000000000 x24: ffff7000042deefc
x23: 0000000000000002 x22: 0000000000000000 x21: 0000000000040cc0
x20: 0000000000000000 x19: 0000000000000013 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082dbd50 x15: 0000000000000000
x14: 0000000000000005 x13: 1ffff000042def00 x12: 0000000000000000
x11: 0000000000000000 x10: ffff7000042def05 x9 : 0000000000000001
x8 : ffff800017d7e000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __alloc_pages+0xd0/0x544 mm/page_alloc.c:5634
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0x9c/0x1dc mm/slab_common.c:1077
 __do_kmalloc_node mm/slab_common.c:924 [inline]
 __kmalloc_node_track_caller+0x120/0x174 mm/slab_common.c:956
 memdup_user_nul+0x5c/0x228 mm/util.c:261
 bitmap_parse_user+0x34/0x88 lib/bitmap.c:464
 cpumask_parse_user include/linux/cpumask.h:725 [inline]
 write_irq_affinity+0x1a0/0x2f4 kernel/irq/proc.c:153
 irq_affinity_proc_write+0x38/0x4c kernel/irq/proc.c:182
 pde_write fs/proc/inode.c:340 [inline]
 proc_reg_write+0x184/0x2d4 fs/proc/inode.c:352
 vfs_write+0x2a8/0x7c8 fs/read_write.c:582
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 608
hardirqs last  enabled at (607): [<ffff80000805a664>] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline]
hardirqs last  enabled at (607): [<ffff80000805a664>] el0_svc_common+0xa0/0x258 arch/arm64/kernel/syscall.c:105
hardirqs last disabled at (608): [<ffff800011b9d0cc>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (602): [<ffff800008031254>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (600): [<ffff800008031220>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---