------------[ cut here ]------------ WARNING: mm/slub.c:7022 at __kvmalloc_node_noprof+0x6e0/0x7fc mm/slub.c:-1, CPU#0: syz.0.17/4927 Modules linked in: CPU: 0 UID: 0 PID: 4927 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026 pstate: 23400005 (nzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __kvmalloc_node_noprof+0x6e0/0x7fc mm/slub.c:-1 lr : __do_kmalloc_node mm/slub.c:-1 [inline] lr : __kvmalloc_node_noprof+0x400/0x7fc mm/slub.c:7014 sp : ffff800099f47930 x29: ffff800099f47980 x28: 00000000ffffffff x27: 0000001000000000 x26: 0001000000000000 x25: 0000000000000000 x24: 00000000000028c0 x23: ffff800082631c9c x22: ffff800099f47ca8 x21: 0000008000000000 x20: ffff7000133e8f58 x19: 0000000000000000 x18: 0000000000000000 x17: ffff800080166554 x16: ffff800080cd9118 x15: ffff800082631978 x14: 0000000000000001 x13: 0000000000000005 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000003 x9 : ffff800088a10ae0 x8 : 0000000000000cc0 x7 : 0000000000000000 x6 : ffff800080b83658 x5 : 00000000ffffffff x4 : 00000000000028c0 x3 : 0000008000000000 x2 : 0000008000000000 x1 : ffff0000c39f3b00 x0 : 0000000000000001 Call trace: __kvmalloc_node_noprof+0x6e0/0x7fc mm/slub.c:-1 (P) init_udmabuf drivers/dma-buf/udmabuf.c:193 [inline] udmabuf_create+0x220/0xb34 drivers/dma-buf/udmabuf.c:386 udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:465 [inline] udmabuf_ioctl+0x1b0/0x2b4 drivers/dma-buf/udmabuf.c:496 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x154/0x1cc fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606 irq event stamp: 676 hardirqs last enabled at (675): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline] hardirqs last enabled at (675): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:221 hardirqs last disabled at (676): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:483 softirqs last enabled at (176): [] local_bh_enable include/linux/bottom_half.h:33 [inline] softirqs last enabled at (176): [] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline] softirqs last enabled at (176): [] do_sve_acc+0x32c/0x4b8 arch/arm64/kernel/fpsimd.c:1332 softirqs last disabled at (174): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (174): [] get_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:234 [inline] softirqs last disabled at (174): [] do_sve_acc+0x10c/0x4b8 arch/arm64/kernel/fpsimd.c:1308 ---[ end trace 0000000000000000 ]---