syzbot

mmap: syz.0.16 (4178) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.
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WARNING: CPU: 1 PID: 4178 at include/linux/fs.h:532 i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
WARNING: CPU: 1 PID: 4178 at include/linux/fs.h:532 hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
Modules linked in:
CPU: 1 PID: 4178 Comm: syz.0.16 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
pc : hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
lr : i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
sp : ffff80001f7078c0
x29: ffff80001f7078c0 x28: ffff0000c8036088 x27: 0000000000000000
x26: dfff800000000000 x25: ffff800014160000 x24: 1ffff0000282c06a
x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000
x20: 0000000020400000 x19: ffff0000c8036000 x18: 0000000000000000
x17: ffff80000877412c x16: ffff8000082bf708 x15: ffff80001139a000
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000880717c
x8 : ffff0000d7649b40 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : ffff0000cc219c60 x3 : ffff800008806ffc
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
 hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
 __vma_adjust+0x290/0x1890 mm/mmap.c:842
 vma_adjust include/linux/mm.h:2556 [inline]
 __split_vma+0x310/0x3f0 mm/mmap.c:-1
 __do_munmap+0x2fc/0xc04 mm/mmap.c:2852
 do_munmap mm/mmap.c:2906 [inline]
 munmap_vma_range mm/mmap.c:602 [inline]
 __mmap_region mm/mmap.c:1753 [inline]
 mmap_region+0x7b0/0x1390 mm/mmap.c:2929
 do_mmap+0x67c/0xdb4 mm/mmap.c:1582
 __do_sys_remap_file_pages mm/mmap.c:3046 [inline]
 __se_sys_remap_file_pages mm/mmap.c:2981 [inline]
 __arm64_sys_remap_file_pages+0x404/0x584 mm/mmap.c:2981
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 1330
hardirqs last  enabled at (1329): [<ffff80001128c428>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last  enabled at (1329): [<ffff80001128c428>] _raw_spin_unlock_irqrestore+0xa8/0x14c kernel/locking/spinlock.c:194
hardirqs last disabled at (1330): [<ffff8000111adf74>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (846): [<ffff80000819e9e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (846): [<ffff80000819e9e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (833): [<ffff80000819efec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (833): [<ffff80000819efec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (833): [<ffff80000819efec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (833): [<ffff80000819efec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace 86d1efe0e3dbff9c ]---
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WARNING: CPU: 0 PID: 4178 at include/linux/fs.h:532 i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
WARNING: CPU: 0 PID: 4178 at include/linux/fs.h:532 hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
Modules linked in:
CPU: 0 PID: 4178 Comm: syz.0.16 Tainted: G        W         5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
pc : hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
lr : i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
lr : hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
sp : ffff80001f7078c0
x29: ffff80001f7078c0 x28: ffff0000c8036088 x27: 0000000000000000
x26: dfff800000000000 x25: ffff800014160000 x24: 1ffff0000282c06a
x23: dfff800000000000 x22: 0000000000000001 x21: 0000000000000000
x20: 0000000020800000 x19: ffff0000c8036000 x18: 0000000000000000
x17: ffff80000877412c x16: ffff8000082bf708 x15: ffff80001139a000
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000880717c
x8 : ffff0000d7649b40 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : ffff0000cc219c60 x3 : ffff800008806ffc
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 i_mmap_assert_write_locked include/linux/fs.h:532 [inline]
 hugetlb_split+0x234/0x29c mm/hugetlb.c:4182
 __vma_adjust+0x29c/0x1890 mm/mmap.c:843
 vma_adjust include/linux/mm.h:2556 [inline]
 __split_vma+0x310/0x3f0 mm/mmap.c:-1
 __do_munmap+0x2fc/0xc04 mm/mmap.c:2852
 do_munmap mm/mmap.c:2906 [inline]
 munmap_vma_range mm/mmap.c:602 [inline]
 __mmap_region mm/mmap.c:1753 [inline]
 mmap_region+0x7b0/0x1390 mm/mmap.c:2929
 do_mmap+0x67c/0xdb4 mm/mmap.c:1582
 __do_sys_remap_file_pages mm/mmap.c:3046 [inline]
 __se_sys_remap_file_pages mm/mmap.c:2981 [inline]
 __arm64_sys_remap_file_pages+0x404/0x584 mm/mmap.c:2981
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 1438
hardirqs last  enabled at (1437): [<ffff8000111b0c78>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (1437): [<ffff8000111b0c78>] exit_to_kernel_mode+0xe0/0x168 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (1438): [<ffff8000111adf74>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (1432): [<ffff80000819e9e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (1432): [<ffff80000819e9e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (1335): [<ffff80000819efec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (1335): [<ffff80000819efec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (1335): [<ffff80000819efec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (1335): [<ffff80000819efec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
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