------------[ cut here ]------------
WARNING: mm/vma.h:277 at assert_sane_pgoff mm/vma.h:277 [inline], CPU#0: syz.7.485/7767
WARNING: mm/vma.h:277 at vma_set_pgoff mm/vma.h:283 [inline], CPU#0: syz.7.485/7767
WARNING: mm/vma.h:277 at vma_add_pgoff+0x50c/0x700 mm/vma.h:314, CPU#0: syz.7.485/7767
Modules linked in:
CPU: 0 UID: 0 PID: 7767 Comm: syz.7.485 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : assert_sane_pgoff mm/vma.h:277 [inline]
pc : vma_set_pgoff mm/vma.h:283 [inline]
pc : vma_add_pgoff+0x50c/0x700 mm/vma.h:314
lr : assert_sane_pgoff mm/vma.h:277 [inline]
lr : vma_set_pgoff mm/vma.h:283 [inline]
lr : vma_add_pgoff+0x50c/0x700 mm/vma.h:314
sp : ffff8000928071e0
x29: ffff800092807200 x28: 1fffe0001dbc08d2 x27: 0000000000000141
x26: ffff0000d529ac00 x25: dfff800000000000 x24: 1fffe0001dbc08d8
x23: ffff0000ede046c0 x22: 0000000000020bd8 x21: ffff0000ede04688
x20: ffff0000ede04640 x19: 0000000020142000 x18: 0000000000000000
x17: ffff800080a9734c x16: ffff800080adfb3c x15: ffff800080a949ec
x14: ffff800080a9620c x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000080000 x9 : 0000000000005066
x8 : ffff80009f265000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800080ae89e0
x2 : 0000000000020142 x1 : ffff0000d36b5880 x0 : 0000000000000001
Call trace:
 assert_sane_pgoff mm/vma.h:277 [inline] (P)
 vma_set_pgoff mm/vma.h:283 [inline] (P)
 vma_add_pgoff+0x50c/0x700 mm/vma.h:314 (P)
 __split_vma+0x6a8/0x83c mm/vma.c:607
 vms_gather_munmap_vmas+0x2ac/0x101c mm/vma.c:1507
 do_vmi_align_munmap+0x218/0x364 mm/vma.c:1675
 do_vmi_munmap+0x1d0/0x254 mm/vma.c:1732
 unmap_source_vma mm/mremap.c:1204 [inline]
 move_vma+0xae4/0x10a8 mm/mremap.c:1396
 mremap_to+0x338/0x3d8 mm/mremap.c:1496
 do_mremap mm/mremap.c:2008 [inline]
 __do_sys_mremap mm/mremap.c:2064 [inline]
 __se_sys_mremap mm/mremap.c:2032 [inline]
 __arm64_sys_mremap+0xb48/0xdc8 mm/mremap.c:2032
 __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+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
irq event stamp: 7754
hardirqs last  enabled at (7753): [<ffff8000869a9950>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline]
hardirqs last  enabled at (7753): [<ffff8000869a9950>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:221
hardirqs last disabled at (7754): [<ffff8000869841d4>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (7724): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (7724): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (7615): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ end trace 0000000000000000 ]---