------------[ cut here ]------------ WARNING: CPU: 0 PID: 4447 at include/linux/fs.h:503 i_mmap_assert_write_locked include/linux/fs.h:503 [inline] WARNING: CPU: 0 PID: 4447 at include/linux/fs.h:503 hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 Modules linked in: CPU: 0 PID: 4447 Comm: syz.4.15 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] pc : hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 lr : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 sp : ffff800020fd7870 x29: ffff800020fd7870 x28: ffff800020fd79a0 x27: dfff800000000000 x26: 0000000000000000 x25: ffff800015380000 x24: 1ffff00002a70070 x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000020000000 x19: ffff0000c3867870 x18: 1fffe00033e7277e x17: ffff80000880d6b8 x16: ffff8000082dbd3c x15: ffff8000088c4244 x14: 0000000000000001 x13: 1fffe00018fab0db x12: 0000000000080000 x11: 0000000000004bbd x10: ffff80002a9f1000 x9 : ffff8000088a4c48 x8 : 0000000000004bbe x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff8000088a4ac8 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: i_mmap_assert_write_locked include/linux/fs.h:503 [inline] hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 __vma_adjust+0x458/0x16fc mm/mmap.c:737 vma_adjust include/linux/mm.h:2810 [inline] __split_vma+0x328/0x44c mm/mmap.c:-1 split_vma+0xa0/0xf8 mm/mmap.c:2424 mbind_range+0x544/0x6f8 mm/mempolicy.c:829 do_mbind mm/mempolicy.c:1324 [inline] kernel_mbind mm/mempolicy.c:1481 [inline] __do_sys_mbind mm/mempolicy.c:1558 [inline] __se_sys_mbind mm/mempolicy.c:1554 [inline] __arm64_sys_mbind+0x678/0x854 mm/mempolicy.c:1554 __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: 750 hardirqs last enabled at (749): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (749): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (750): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (732): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (732): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (583): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4447 at include/linux/fs.h:503 i_mmap_assert_write_locked include/linux/fs.h:503 [inline] WARNING: CPU: 1 PID: 4447 at include/linux/fs.h:503 hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 Modules linked in: CPU: 1 PID: 4447 Comm: syz.4.15 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] pc : hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 lr : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 sp : ffff800020fd7870 x29: ffff800020fd7870 x28: ffff800020fd79a0 x27: dfff800000000000 x26: 0000000000000000 x25: ffff800015380000 x24: 1ffff00002a70070 x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000020600000 x19: ffff0000c3867870 x18: 1fffe00033e7277e x17: ffff80000880d6b8 x16: ffff8000082dbd3c x15: ffff8000088c4244 x14: 0000000000000001 x13: 1fffe00018fab0db x12: 0000000000080000 x11: 000000000004f5ad x10: ffff80002a9f1000 x9 : ffff8000088a4c48 x8 : 000000000004f5ae x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff8000088a4ac8 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: i_mmap_assert_write_locked include/linux/fs.h:503 [inline] hugetlb_split+0x234/0x29c mm/hugetlb.c:4923 __vma_adjust+0x464/0x16fc mm/mmap.c:738 vma_adjust include/linux/mm.h:2810 [inline] __split_vma+0x328/0x44c mm/mmap.c:-1 split_vma+0xa0/0xf8 mm/mmap.c:2424 mbind_range+0x544/0x6f8 mm/mempolicy.c:829 do_mbind mm/mempolicy.c:1324 [inline] kernel_mbind mm/mempolicy.c:1481 [inline] __do_sys_mbind mm/mempolicy.c:1558 [inline] __se_sys_mbind mm/mempolicy.c:1554 [inline] __arm64_sys_mbind+0x678/0x854 mm/mempolicy.c:1554 __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: 3458 hardirqs last enabled at (3457): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (3457): [] exit_to_kernel_mode+0xcc/0xfc arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (3458): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1058): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (1058): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (753): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---