------------[ cut here ]------------ WARNING: CPU: 3 PID: 8681 at mm/page_alloc.c:4935 __alloc_frozen_pages_noprof+0x30b/0x23f0 mm/page_alloc.c:4935 Modules linked in: CPU: 3 UID: 0 PID: 8681 Comm: syz.2.690 Not tainted 6.16.0-rc5-syzkaller-00025-gd006330be3f7 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__alloc_frozen_pages_noprof+0x30b/0x23f0 mm/page_alloc.c:4935 Code: f0 5b 5d 41 5c 41 5d 41 5e 41 5f e9 bf 31 75 09 83 fe 0a 0f 86 0a fe ff ff 80 3d 68 ee 7b 0e 00 75 0b c6 05 5f ee 7b 0e 01 90 <0f> 0b 90 45 31 f6 eb 81 4d 85 f6 74 22 44 89 fa 89 ee 4c 89 f7 e8 RSP: 0018:ffffc90007fb7908 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000019 RDI: 0000000000040dc0 RBP: 0000001000000720 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000019 R13: 1ffff92000ff6f36 R14: 0000001000000720 R15: 0000000000000019 FS: 00007f2c060936c0(0000) GS:ffff8880d6a16000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000001859c0 CR3: 00000000323e0000 CR4: 0000000000352ef0 Call Trace: __alloc_pages_noprof+0xb/0x1b0 mm/page_alloc.c:4993 __alloc_pages_node_noprof include/linux/gfp.h:284 [inline] alloc_pages_node_noprof include/linux/gfp.h:311 [inline] ___kmalloc_large_node+0x84/0x1e0 mm/slub.c:4272 __kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:4300 __do_kmalloc_node mm/slub.c:4316 [inline] __kmalloc_noprof.cold+0xc/0x61 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] kmalloc_array_noprof include/linux/slab.h:948 [inline] comedi_unlocked_ioctl+0x1757/0x2e90 drivers/comedi/comedi_fops.c:2242 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2c0518e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2c06093038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f2c053b5fa0 RCX: 00007f2c0518e929 RDX: 00002000001859c0 RSI: 000000008010640b RDI: 0000000000000003 RBP: 00007f2c05210b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2c053b5fa0 R15: 00007ffcf88e93f8