------------[ cut here ]------------ WARNING: CPU: 1 PID: 4665 at include/linux/fs.h:503 i_mmap_assert_write_locked include/linux/fs.h:503 [inline] WARNING: CPU: 1 PID: 4665 at include/linux/fs.h:503 hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 Modules linked in: CPU: 1 PID: 4665 Comm: syz.4.109 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 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:4920 lr : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 sp : ffff800020b97830 x29: ffff800020b97830 x28: dfff800000000000 x27: 0000000020600000 x26: ffff0000ce25e360 x25: ffff800015210000 x24: 1ffff00002a42070 x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000020000000 x19: ffff0000ce25e360 x18: ffff800011b8bf60 x17: ffff8000088c0cb8 x16: ffff8000082d7ca0 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe0001af0679b x12: 0000000000080000 x11: 0000000000002e73 x10: ffff80002aec3000 x9 : ffff800008896764 x8 : 0000000000002e74 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff8000088965e4 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+0x3a0/0x1724 mm/mmap.c:737 vma_adjust include/linux/mm.h:2810 [inline] __split_vma+0x324/0x444 mm/mmap.c:-1 split_vma+0xa0/0xf8 mm/mmap.c:2424 mbind_range+0x490/0x6ec 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+0x678/0x858 mm/mempolicy.c:1554 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 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: 1558 hardirqs last enabled at (1557): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1557): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (1558): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1488): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1486): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4665 at include/linux/fs.h:503 i_mmap_assert_write_locked include/linux/fs.h:503 [inline] WARNING: CPU: 1 PID: 4665 at include/linux/fs.h:503 hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 Modules linked in: CPU: 1 PID: 4665 Comm: syz.4.109 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 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:4920 lr : i_mmap_assert_write_locked include/linux/fs.h:503 [inline] lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4920 sp : ffff800020b97830 x29: ffff800020b97830 x28: dfff800000000000 x27: 0000000020600000 x26: ffff0000ce25e360 x25: ffff800015210000 x24: 1ffff00002a42070 x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000020600000 x19: ffff0000ce25e360 x18: ffff800011b8bf60 x17: ffff8000088c0cb8 x16: ffff8000082d7ca0 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe0001af0679b x12: 0000000000080000 x11: 000000000001a40e x10: ffff80002aec3000 x9 : ffff800008896764 x8 : 000000000001a40f x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff8000088965e4 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+0x3ac/0x1724 mm/mmap.c:738 vma_adjust include/linux/mm.h:2810 [inline] __split_vma+0x324/0x444 mm/mmap.c:-1 split_vma+0xa0/0xf8 mm/mmap.c:2424 mbind_range+0x490/0x6ec 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+0x678/0x858 mm/mempolicy.c:1554 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 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: 1746 hardirqs last enabled at (1745): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (1745): [] exit_to_kernel_mode+0xcc/0xfc arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (1746): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1740): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (1740): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (1561): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]---