------------[ cut here ]------------ WARNING: CPU: 1 PID: 6046 at mm/page_alloc.c:5449 __alloc_pages+0x2b4/0x470 mm/page_alloc.c:5449 Modules linked in: CPU: 1 PID: 6046 Comm: syz.9.319 Not tainted 5.15.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 20400005 (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 : ffff80001f477700 x29: ffff80001f4777d0 x28: 1ffff000035c6cc8 x27: ffff80001f477720 x26: ffff80001ae36640 x25: dfff800000000000 x24: ffff700003e8eee4 x23: ffff80001ae36644 x22: 0000000000000000 x21: 0000000000040dc0 x20: 0000000000000000 x19: 0000000000000019 x18: 0000000000000000 x17: 0000000000000002 x16: ffff800008822b00 x15: 0000000000000005 x14: 0000000000ff0100 x13: ffffffffffffffff x12: 0000000000000005 x11: 1ffff00003e8eee8 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff80001f477768 x7 : 0000000000000000 x6 : ffff80001f477c40 x5 : ffff80001f477c40 x4 : 0000000000000000 x3 : 0000000000000020 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff80001f477740 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: 7304 hardirqs last enabled at (7303): [] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (7304): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (7286): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (7284): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 3bf23762cb7b0c6c ]---