get_signal+0x1181/0x12c0 kernel/signal.c:2810
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x104/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 20361 Comm: syz.5.4761 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__filemap_add_folio+0x11ee/0x1360 mm/filemap.c:858
Code: ff 4c 89 f7 48 c7 c6 20 f5 d7 8b e8 8c fc 22 ff 90 0f 0b e8 94 4f c1 ff 48 8b 7c 24 08 48 c7 c6 e0 e9 d7 8b e8 73 fc 22 ff 90 <0f> 0b e8 7b 4f c1 ff 4c 89 f7 48 c7 c6 20 f5 d7 8b e8 5c fc 22 ff
RSP: 0018:ffffc90004ff71c0 EFLAGS: 00010246
RAX: 67d36fd550aa2d00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8dfe3478 RDI: 00000000ffffffff
RBP: ffffc90004ff7340 R08: ffffffff9032f8f7 R09: 1ffffffff2065f1e
R10: dffffc0000000000 R11: fffffbfff2065f1f R12: dffffc0000000000
R13: ffff8880230a9440 R14: 0000000000000004 R15: ffff8880230a9558
FS:  00007f552321b6c0(0000) GS:ffff888125220000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fce7a5dfd58 CR3: 0000000052052000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 filemap_add_folio+0x25e/0x530 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:470 [inline]
 page_cache_ra_order+0x6d1/0xee0 mm/readahead.c:535
 do_sync_mmap_readahead+0x75e/0x990 mm/filemap.c:3428
 filemap_fault+0x7d9/0x13b0 mm/filemap.c:3582
 __do_fault+0x138/0x2a0 mm/memory.c:5425
 do_read_fault mm/memory.c:5860 [inline]
 do_fault mm/memory.c:5994 [inline]
 do_pte_missing+0x2215/0x34b0 mm/memory.c:4566
 handle_pte_fault mm/memory.c:6379 [inline]
 __handle_mm_fault mm/memory.c:6517 [inline]
 handle_mm_fault+0x1b36/0x3080 mm/memory.c:6686
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x1678/0x2720 mm/gup.c:1428
 populate_vma_page_range+0x2be/0x3c0 mm/gup.c:1860
 __mm_populate+0x25f/0x390 mm/gup.c:1963
 mm_populate include/linux/mm.h:4171 [inline]
 vm_mmap_pgoff+0x353/0x4e0 mm/util.c:586
 ksys_mmap_pgoff+0x4dc/0x760 mm/mmap.c:606
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f552239ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f552321b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f5522616090 RCX: 00007f552239ce59
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f5522432e6f R08: 0000000000000004 R09: 000000001a580000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5522616128 R14: 00007f5522616090 R15: 00007ffcccbaab88
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11ee/0x1360 mm/filemap.c:858
Code: ff 4c 89 f7 48 c7 c6 20 f5 d7 8b e8 8c fc 22 ff 90 0f 0b e8 94 4f c1 ff 48 8b 7c 24 08 48 c7 c6 e0 e9 d7 8b e8 73 fc 22 ff 90 <0f> 0b e8 7b 4f c1 ff 4c 89 f7 48 c7 c6 20 f5 d7 8b e8 5c fc 22 ff
RSP: 0018:ffffc90004ff71c0 EFLAGS: 00010246
RAX: 67d36fd550aa2d00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8dfe3478 RDI: 00000000ffffffff
RBP: ffffc90004ff7340 R08: ffffffff9032f8f7 R09: 1ffffffff2065f1e
R10: dffffc0000000000 R11: fffffbfff2065f1f R12: dffffc0000000000
R13: ffff8880230a9440 R14: 0000000000000004 R15: ffff8880230a9558
FS:  00007f552321b6c0(0000) GS:ffff888125320000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5cdf3ea2f8 CR3: 0000000052052000 CR4: 0000000000350ef0