tlb_finish_mmu+0xf9/0x230 mm/mmu_gather.c:549 unmap_region+0x458/0x4e0 mm/vma.c:488 vms_clear_ptes mm/vma.c:1284 [inline] vms_complete_munmap_vmas+0x493/0xc60 mm/vma.c:1326 do_vmi_align_munmap+0x3b7/0x4b0 mm/vma.c:1585 do_vmi_munmap+0x252/0x2d0 mm/vma.c:1633 __vm_munmap+0x22c/0x3d0 mm/vma.c:3254 __do_sys_munmap mm/mmap.c:1078 [inline] __se_sys_munmap mm/mmap.c:1075 [inline] __x64_sys_munmap+0x60/0x70 mm/mmap.c:1075 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:155! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 6044 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026 RIP: 0010:filemap_unaccount_folio+0x70f/0x790 mm/filemap.c:155 Code: 53 c5 ff 48 89 df 48 c7 c6 60 b9 f7 8b e8 b9 84 26 ff 90 0f 0b e8 d1 53 c5 ff 48 89 df 48 c7 c6 c0 b6 f7 8b e8 a2 84 26 ff 90 <0f> 0b e8 ba 53 c5 ff 48 89 df 48 c7 c6 60 b9 f7 8b e8 8b 84 26 ff RSP: 0018:ffffc900034d7338 EFLAGS: 00010046 RAX: b877baa4f8af4000 RBX: ffffea0001b70e80 RCX: 0000000080000002 RDX: 0000000000000002 RSI: ffffffff8e4a7f19 RDI: ffff88802d8e0000 RBP: 0000000000000001 R08: ffff8880b85247d3 R09: 1ffff110170a48fa R10: dffffc0000000000 R11: ffffed10170a48fb R12: ffffea0001b70eb0 R13: ffff8880254e2ee8 R14: 1ffffd400036e1d0 R15: ffffea0001b70e88 FS: 0000000000000000(0000) GS:ffff888124ee8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000000c0 CR3: 000000000e94c000 CR4: 00000000003526f0 Call Trace: __filemap_remove_folio+0xc5/0x530 mm/filemap.c:227 filemap_remove_folio+0xe6/0x1f0 mm/filemap.c:257 truncate_inode_folio+0x5d/0x70 mm/truncate.c:176 shmem_undo_range+0x42f/0x1660 mm/shmem.c:1145 shmem_truncate_range mm/shmem.c:1277 [inline] shmem_evict_inode+0x289/0xae0 mm/shmem.c:1407 evict+0x61e/0xb10 fs/inode.c:846 __dentry_kill+0x1a2/0x5e0 fs/dcache.c:670 finish_dput+0xc9/0x480 fs/dcache.c:879 __fput+0x691/0xa70 fs/file_table.c:477 task_work_run+0x1d9/0x270 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x926/0x2490 kernel/exit.c:974 do_group_exit+0x21b/0x2d0 kernel/exit.c:1116 __do_sys_exit_group kernel/exit.c:1127 [inline] __se_sys_exit_group kernel/exit.c:1125 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1125 x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6d5bb9c799 Code: Unable to access opcode bytes at 0x7f6d5bb9c76f. RSP: 002b:00007ffeb769ad18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6d5bb9c799 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 0000000000000000 R09: 00007f6d5bde63e0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6d5bde63e0 R14: 0000000000000003 R15: 00007ffeb769add0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:filemap_unaccount_folio+0x70f/0x790 mm/filemap.c:155 Code: 53 c5 ff 48 89 df 48 c7 c6 60 b9 f7 8b e8 b9 84 26 ff 90 0f 0b e8 d1 53 c5 ff 48 89 df 48 c7 c6 c0 b6 f7 8b e8 a2 84 26 ff 90 <0f> 0b e8 ba 53 c5 ff 48 89 df 48 c7 c6 60 b9 f7 8b e8 8b 84 26 ff RSP: 0018:ffffc900034d7338 EFLAGS: 00010046 RAX: b877baa4f8af4000 RBX: ffffea0001b70e80 RCX: 0000000080000002 RDX: 0000000000000002 RSI: ffffffff8e4a7f19 RDI: ffff88802d8e0000 RBP: 0000000000000001 R08: ffff8880b85247d3 R09: 1ffff110170a48fa R10: dffffc0000000000 R11: ffffed10170a48fb R12: ffffea0001b70eb0 R13: ffff8880254e2ee8 R14: 1ffffd400036e1d0 R15: ffffea0001b70e88 FS: 0000000000000000(0000) GS:ffff888124ee8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000000c0 CR3: 000000000e94c000 CR4: 00000000003526f0