hugetlbfs_punch_hole fs/hugetlbfs/inode.c:719 [inline] hugetlbfs_fallocate+0xbc7/0x1100 fs/hugetlbfs/inode.c:745 vfs_fallocate+0x6a3/0x830 fs/open.c:338 madvise_remove mm/madvise.c:1034 [inline] madvise_vma_behavior mm/madvise.c:1263 [inline] madvise_walk_vmas mm/madvise.c:1530 [inline] madvise_do_behavior+0x1749/0x3500 mm/madvise.c:1695 do_madvise mm/madvise.c:1782 [inline] __do_sys_madvise mm/madvise.c:1790 [inline] __se_sys_madvise mm/madvise.c:1788 [inline] __ia32_sys_madvise+0x10c/0x150 mm/madvise.c:1788 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e ------------[ cut here ]------------ kernel BUG at mm/filemap.c:154! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 25578 Comm: syz.0.4032 Not tainted 6.15.0-rc7-syzkaller-00175-g0f8c0258bf04 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:filemap_unaccount_folio+0x715/0x790 mm/filemap.c:154 Code: d1 c9 ff 48 89 df 48 c7 c6 40 10 74 8b e8 03 ec 10 00 90 0f 0b e8 6b d1 c9 ff 48 89 df 48 c7 c6 20 0f 74 8b e8 ec eb 10 00 90 <0f> 0b e8 54 d1 c9 ff 48 89 df 48 c7 c6 40 10 74 8b e8 d5 eb 10 00 RSP: 0018:ffffc9001b5e7160 EFLAGS: 00010046 RAX: e9514d97ce282400 RBX: ffffea00013f0000 RCX: e9514d97ce282400 RDX: 0000000000000005 RSI: ffffffff8d9390e4 RDI: ffff8880294cda00 RBP: 0000000000000001 R08: ffff8880b8823e93 R09: 1ffff110171047d2 R10: dffffc0000000000 R11: ffffed10171047d3 R12: 0000000000000040 R13: 1ffffd400027e000 R14: 1ffffd400027e001 R15: ffffea00013f0008 FS: 0000000000000000(0000) GS:ffff8881260c2000(0063) knlGS:00000000f4c11b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7313184 CR3: 0000000012278000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: <TASK> __filemap_remove_folio+0xc3/0x500 mm/filemap.c:223 filemap_remove_folio+0xe6/0x1f0 mm/filemap.c:253 hugetlb_delete_from_page_cache fs/hugetlbfs/inode.c:334 [inline] remove_inode_single_folio fs/hugetlbfs/inode.c:539 [inline] remove_inode_hugepages+0x581/0x10e0 fs/hugetlbfs/inode.c:596 hugetlbfs_punch_hole fs/hugetlbfs/inode.c:719 [inline] hugetlbfs_fallocate+0xbc7/0x1100 fs/hugetlbfs/inode.c:745 vfs_fallocate+0x6a3/0x830 fs/open.c:338 madvise_remove mm/madvise.c:1034 [inline] madvise_vma_behavior mm/madvise.c:1263 [inline] madvise_walk_vmas mm/madvise.c:1530 [inline] madvise_do_behavior+0x1749/0x3500 mm/madvise.c:1695 do_madvise mm/madvise.c:1782 [inline] __do_sys_madvise mm/madvise.c:1790 [inline] __se_sys_madvise mm/madvise.c:1788 [inline] __ia32_sys_madvise+0x10c/0x150 mm/madvise.c:1788 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f52539 Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f4c1155c EFLAGS: 00000206 ORIG_RAX: 00000000000000db RAX: ffffffffffffffda RBX: 0000000080000000 RCX: 0000000000600002 RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_unaccount_folio+0x715/0x790 mm/filemap.c:154 Code: d1 c9 ff 48 89 df 48 c7 c6 40 10 74 8b e8 03 ec 10 00 90 0f 0b e8 6b d1 c9 ff 48 89 df 48 c7 c6 20 0f 74 8b e8 ec eb 10 00 90 <0f> 0b e8 54 d1 c9 ff 48 89 df 48 c7 c6 40 10 74 8b e8 d5 eb 10 00 RSP: 0018:ffffc9001b5e7160 EFLAGS: 00010046 RAX: e9514d97ce282400 RBX: ffffea00013f0000 RCX: e9514d97ce282400 RDX: 0000000000000005 RSI: ffffffff8d9390e4 RDI: ffff8880294cda00 RBP: 0000000000000001 R08: ffff8880b8823e93 R09: 1ffff110171047d2 R10: dffffc0000000000 R11: ffffed10171047d3 R12: 0000000000000040 R13: 1ffffd400027e000 R14: 1ffffd400027e001 R15: ffffea00013f0008 FS: 0000000000000000(0000) GS:ffff8881260c2000(0063) knlGS:00000000f4c11b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7313184 CR3: 0000000012278000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 4: 10 07 adc %al,(%rdi) 6: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi a: 10 08 adc %cl,(%rax) c: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop