------------[ cut here ]------------
WARNING: CPU: 0 PID: 6758 at mm/page_alloc.c:5449 __alloc_pages+0x2b4/0x470 mm/page_alloc.c:5449
Modules linked in:
CPU: 0 PID: 6758 Comm: syz.5.429 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __alloc_pages+0x2b4/0x470 mm/page_alloc.c:5449
lr : __alloc_pages+0xac/0x470 mm/page_alloc.c:5442
sp : ffff800021007700
x29: ffff8000210077d0 x28: 1ffff000035c4a80 x27: ffff800021007720
x26: ffff80001ae25400 x25: dfff800000000000 x24: ffff700004200ee4
x23: ffff80001ae25404 x22: 0000000000000000 x21: 0000000000040dc0
x20: 0000000000000000 x19: 000000000000000b x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008811554 x15: 0000000000000005
x14: 0000000000ff0100 x13: ffffffffffffffff x12: 0000000000000005
x11: 1ffff00004200ee8 x10: 0000000000000000 x9 : 0000000000000000
x8 : ffff800021007768 x7 : 0000000000000000 x6 : ffff800021007c40
x5 : ffff800021007c40 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff800021007740
Call trace:
 __alloc_pages+0x2b4/0x470 mm/page_alloc.c:5449
 alloc_pages+0x34c/0x5c0 mm/mempolicy.c:-1
 kmalloc_order+0x40/0x160 mm/slab_common.c:986
 kmalloc_order_trace+0x30/0x244 mm/slab_common.c:1002
 kmalloc_large include/linux/slab.h:533 [inline]
 __kmalloc+0x318/0x44c mm/slub.c:4396
 kmalloc_array include/linux/slab.h:644 [inline]
 kcalloc include/linux/slab.h:673 [inline]
 comedi_unlocked_ioctl+0x914/0xdcc drivers/comedi/comedi_fops.c:2237
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 210
hardirqs last  enabled at (209): [<ffff8000111bacfc>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (209): [<ffff8000111bacfc>] exit_to_kernel_mode+0xe0/0x168 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (210): [<ffff8000111b7ff8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (204): [<ffff80000819e9e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (204): [<ffff80000819e9e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (141): [<ffff80000819efec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (141): [<ffff80000819efec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (141): [<ffff80000819efec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (141): [<ffff80000819efec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace 2d951ac63f94f5c3 ]---