process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
kernel BUG at mm/filemap.c:868!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 11817 Comm: syz.4.553 Not tainted 6.16.0-rc7-syzkaller-00142-gb711733e89a3 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867
Code: 6c ca ff 4c 89 e7 48 c7 c6 40 2e 94 8b e8 0b 99 0e 00 90 0f 0b e8 53 6c ca ff 4c 89 e7 48 c7 c6 20 25 94 8b e8 f4 98 0e 00 90 <0f> 0b e8 3c 6c ca ff 4c 89 e7 48 c7 c6 40 2e 94 8b e8 dd 98 0e 00
RSP: 0018:ffffc9000c4bf2c0 EFLAGS: 00010246
RAX: 852e32d135cde600 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d982ff2 RDI: 00000000ffffffff
RBP: ffffc9000c4bf428 R08: ffffffff8fa0b3f7 R09: 1ffffffff1f4167e
R10: dffffc0000000000 R11: fffffbfff1f4167f R12: ffffea0001d9b9c0
R13: dffffc0000000000 R14: ffffea0001d9b9c8 R15: 0000000000000002
FS:  00007fc6d65f66c0(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c3985c000 CR3: 000000005a9cc000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0xd5/0x270 mm/filemap.c:969
 ra_alloc_folio mm/readahead.c:448 [inline]
 page_cache_ra_order+0x74c/0xc70 mm/readahead.c:509
 filemap_get_pages+0x43c/0x1ea0 mm/filemap.c:2602
 filemap_splice_read+0x4fc/0xbc0 mm/filemap.c:2990
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x4a6/0xcc0 fs/splice.c:1083
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x181/0x270 fs/splice.c:1227
 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc6d878e9a9
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:00007fc6d65f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fc6d89b5fa0 RCX: 00007fc6d878e9a9
RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000000008
RBP: 00007fc6d8810d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc6d89b5fa0 R15: 00007ffcd3133d78
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867
Code: 6c ca ff 4c 89 e7 48 c7 c6 40 2e 94 8b e8 0b 99 0e 00 90 0f 0b e8 53 6c ca ff 4c 89 e7 48 c7 c6 20 25 94 8b e8 f4 98 0e 00 90 <0f> 0b e8 3c 6c ca ff 4c 89 e7 48 c7 c6 40 2e 94 8b e8 dd 98 0e 00
RSP: 0018:ffffc9000c4bf2c0 EFLAGS: 00010246
RAX: 852e32d135cde600 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d982ff2 RDI: 00000000ffffffff
RBP: ffffc9000c4bf428 R08: ffffffff8fa0b3f7 R09: 1ffffffff1f4167e
R10: dffffc0000000000 R11: fffffbfff1f4167f R12: ffffea0001d9b9c0
R13: dffffc0000000000 R14: ffffea0001d9b9c8 R15: 0000000000000002
FS:  00007fc6d65f66c0(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffed98950e8 CR3: 000000005a9cc000 CR4: 00000000003526f0