__mmput+0x118/0x3c0 kernel/fork.c:1200
 exec_mmap+0x49b/0x550 fs/exec.c:1040
 begin_new_exec+0xaa4/0x1ee0 fs/exec.c:1299
 load_elf_binary+0x99f/0x26d0 fs/binfmt_elf.c:1028
 search_binary_handler fs/exec.c:1764 [inline]
 exec_binprm fs/exec.c:1805 [inline]
 bprm_execve+0xb10/0x18a0 fs/exec.c:1874
 do_execveat_common+0x51b/0x6c0 fs/exec.c:1979
 do_execve fs/exec.c:2053 [inline]
 __do_sys_execve fs/exec.c:2129 [inline]
 __se_sys_execve fs/exec.c:2124 [inline]
 __x64_sys_execve+0x8e/0xa0 fs/exec.c:2124
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
------------[ cut here ]------------
kernel BUG at mm/filemap.c:153!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5584 Comm: syz.6.270 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:filemap_unaccount_folio+0x5cf/0xa80 mm/filemap.c:153
Code: 07 38 c1 0f 8c 19 fe ff ff 4c 89 e7 e8 3a 74 27 00 e9 0c fe ff ff e8 20 53 d7 ff 48 89 df 48 c7 c6 80 e9 94 8a e8 31 e1 11 00 <0f> 0b e8 0a 53 d7 ff 48 89 df 48 c7 c6 e0 ee 94 8a e8 1b e1 11 00
RSP: 0000:ffffc90004217618 EFLAGS: 00010046
RAX: 63cce86e95a15a00 RBX: ffffea00014faa80 RCX: 63cce86e95a15a00
RDX: 0000000000000002 RSI: ffffffff8a8c1480 RDI: ffffffff8adefaa0
RBP: ffffc90004217778 R08: dffffc0000000000 R09: fffffbfff1c3ee4e
R10: fffffbfff1c3ee4e R11: 1ffffffff1c3ee4d R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880582b5bc8 R15: ffff8880582b5bd0
FS:  000055556440e500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2d8be5 CR3: 000000002df2b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __filemap_remove_folio+0xbb/0x860 mm/filemap.c:222
 filemap_remove_folio+0xed/0x2c0 mm/filemap.c:255
 truncate_inode_folio+0x59/0x70 mm/truncate.c:195
 shmem_undo_range+0x4d2/0x2050 mm/shmem.c:942
 shmem_truncate_range mm/shmem.c:1062 [inline]
 shmem_evict_inode+0x248/0xa40 mm/shmem.c:1171
 evict+0x485/0x870 fs/inode.c:705
 __dentry_kill+0x431/0x650 fs/dcache.c:611
 dentry_kill+0xb8/0x290 fs/dcache.c:-1
 dput+0xfa/0x1d0 fs/dcache.c:918
 __fput+0x5e0/0x920 fs/file_table.c:328
 task_work_run+0x1ca/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f47b118eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd8a02ec28 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f47b13d7da0 RCX: 00007f47b118eba9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f47b13d7da0 R08: 00000000000000dc R09: 0000000c8a02ef1f
R10: 00000000003ffd00 R11: 0000000000000246 R12: 000000000003681b
R13: 00007f47b13d6090 R14: ffffffffffffffff R15: 00007ffd8a02ed40
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x5cf/0xa80 mm/filemap.c:153
Code: 07 38 c1 0f 8c 19 fe ff ff 4c 89 e7 e8 3a 74 27 00 e9 0c fe ff ff e8 20 53 d7 ff 48 89 df 48 c7 c6 80 e9 94 8a e8 31 e1 11 00 <0f> 0b e8 0a 53 d7 ff 48 89 df 48 c7 c6 e0 ee 94 8a e8 1b e1 11 00
RSP: 0000:ffffc90004217618 EFLAGS: 00010046
RAX: 63cce86e95a15a00 RBX: ffffea00014faa80 RCX: 63cce86e95a15a00
RDX: 0000000000000002 RSI: ffffffff8a8c1480 RDI: ffffffff8adefaa0
RBP: ffffc90004217778 R08: dffffc0000000000 R09: fffffbfff1c3ee4e
R10: fffffbfff1c3ee4e R11: 1ffffffff1c3ee4d R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8880582b5bc8 R15: ffff8880582b5bd0
FS:  000055556440e500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2d8be5 CR3: 000000002df2b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400