------------[ cut here ]------------ WARNING: CPU: 0 PID: 7819 at include/linux/fs.h:503 i_mmap_assert_write_locked include/linux/fs.h:503 [inline] WARNING: CPU: 0 PID: 7819 at include/linux/fs.h:503 hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 Modules linked in: CPU: 0 PID: 7819 Comm: syz.4.1090 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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:4920 lr : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 sp : ffff800021d474f0 x29: ffff800021d474f0 x28: dfff800000000000 x27: ffff7000043a8eb8 x26: ffff0000d44cb288 x25: ffff8000150c0000 x24: 1ffff00002a180b0 x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000020000000 x19: ffff0000d44cb288 x18: 0000000000000000 x17: ffff8000087f3808 x16: ffff8000082d10fc x15: 0000000000000002 x14: 000000001195d0cc x13: 0000000027cd476f x12: 0000000000080000 x11: 0000000000009418 x10: ffff80002cb9b000 x9 : ffff800008888bd4 x8 : 0000000000009419 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff800008888a54 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:4920 __vma_adjust+0x450/0x16c0 mm/mmap.c:737 vma_adjust include/linux/mm.h:2810 [inline] __split_vma+0x324/0x448 mm/mmap.c:-1 do_mas_align_munmap+0x2c8/0xeec mm/mmap.c:2480 do_mas_munmap mm/mmap.c:2650 [inline] do_munmap+0x1c4/0x22c mm/mmap.c:2664 mremap_to+0x244/0x440 mm/mremap.c:826 __do_sys_mremap mm/mremap.c:972 [inline] __se_sys_mremap mm/mremap.c:889 [inline] __arm64_sys_mremap+0x58c/0xe54 mm/mremap.c:889 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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: 628 hardirqs last enabled at (627): [] kmem_cache_alloc_bulk+0x3d0/0x500 mm/slub.c:3873 hardirqs last disabled at (628): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (482): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (480): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7819 at include/linux/fs.h:503 i_mmap_assert_write_locked include/linux/fs.h:503 [inline] WARNING: CPU: 0 PID: 7819 at include/linux/fs.h:503 hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 Modules linked in: CPU: 0 PID: 7819 Comm: syz.4.1090 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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:4920 lr : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 sp : ffff800021d474f0 x29: ffff800021d474f0 x28: dfff800000000000 x27: ffff7000043a8eb8 x26: ffff0000d44cb288 x25: ffff8000150c0000 x24: 1ffff00002a180b0 x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000020400000 x19: ffff0000d44cb288 x18: 0000000000000000 x17: ffff8000087f3808 x16: ffff8000082d10fc x15: 0000000000000002 x14: 000000001195d0cc x13: 0000000027cd476f x12: 0000000000080000 x11: 0000000000021682 x10: ffff80002cb9b000 x9 : ffff800008888bd4 x8 : 0000000000021683 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff800008888a54 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:4920 __vma_adjust+0x45c/0x16c0 mm/mmap.c:738 vma_adjust include/linux/mm.h:2810 [inline] __split_vma+0x324/0x448 mm/mmap.c:-1 do_mas_align_munmap+0x2c8/0xeec mm/mmap.c:2480 do_mas_munmap mm/mmap.c:2650 [inline] do_munmap+0x1c4/0x22c mm/mmap.c:2664 mremap_to+0x244/0x440 mm/mremap.c:826 __do_sys_mremap mm/mremap.c:972 [inline] __se_sys_mremap mm/mremap.c:889 [inline] __arm64_sys_mremap+0x58c/0xe54 mm/mremap.c:889 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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: 822 hardirqs last enabled at (821): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (821): [] exit_to_kernel_mode+0xcc/0xfc arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (822): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (816): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (816): [] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624 softirqs last disabled at (631): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---