__do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
------------[ cut here ]------------
kernel BUG at mm/filemap.c:858!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 28737 Comm: syz.3.7803 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
RIP: 0010:__filemap_add_folio+0xf7f/0x1220 mm/filemap.c:858
Code: c1 c7 ff 48 c7 c6 a0 10 9d 8b 4c 89 ef e8 a9 0b 12 00 90 0f 0b e8 01 c1 c7 ff 48 c7 c6 00 11 9d 8b 4c 89 ef e8 92 0b 12 00 90 <0f> 0b e8 ea c0 c7 ff 90 0f 0b 90 e9 9b fe ff ff e8 dc c0 c7 ff 90
RSP: 0018:ffffc900044c7458 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112c00 RCX: ffffc90014135000
RDX: 0000000000080000 RSI: ffffffff82512a48 RDI: ffff88802bdbe004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000004
R13: ffffea000086c640 R14: 0000000000000000 R15: 1ffff92000898eb5
FS:  00007f21823c96c0(0000) GS:ffff8881245de000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555567b70aa8 CR3: 0000000083b7d000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 filemap_add_folio+0x1d8/0x690 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:453 [inline]
 page_cache_ra_order+0x614/0xfe0 mm/readahead.c:512
 do_sync_mmap_readahead mm/filemap.c:3400 [inline]
 filemap_fault+0x1b56/0x37c0 mm/filemap.c:3549
 __do_fault+0x10d/0x550 mm/memory.c:5323
 do_read_fault mm/memory.c:5758 [inline]
 do_fault+0xaf9/0x1990 mm/memory.c:5892
 do_pte_missing mm/memory.c:4404 [inline]
 handle_pte_fault mm/memory.c:6276 [inline]
 __handle_mm_fault+0x1807/0x2b50 mm/memory.c:6414
 handle_mm_fault+0x36d/0xa20 mm/memory.c:6583
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0xf9c/0x34d0 mm/gup.c:1428
 populate_vma_page_range+0x267/0x3f0 mm/gup.c:1860
 __mm_populate+0x107/0x3a0 mm/gup.c:1963
 mm_populate include/linux/mm.h:3705 [inline]
 vm_mmap_pgoff+0x37f/0x470 mm/util.c:586
 ksys_mmap_pgoff+0x328/0x5b0 mm/mmap.c:604
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f218159acb9
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:00007f21823c9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f2181816090 RCX: 00007f218159acb9
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f2181608bf7 R08: 0000000000000004 R09: 000000002c93a000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2181816128 R14: 00007f2181816090 R15: 00007ffc07618ac8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xf7f/0x1220 mm/filemap.c:858
Code: c1 c7 ff 48 c7 c6 a0 10 9d 8b 4c 89 ef e8 a9 0b 12 00 90 0f 0b e8 01 c1 c7 ff 48 c7 c6 00 11 9d 8b 4c 89 ef e8 92 0b 12 00 90 <0f> 0b e8 ea c0 c7 ff 90 0f 0b 90 e9 9b fe ff ff e8 dc c0 c7 ff 90
RSP: 0018:ffffc900044c7458 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112c00 RCX: ffffc90014135000
RDX: 0000000000080000 RSI: ffffffff82512a48 RDI: ffff88802bdbe004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000004
R13: ffffea000086c640 R14: 0000000000000000 R15: 1ffff92000898eb5
FS:  00007f21823c96c0(0000) GS:ffff8881245de000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0025be1858 CR3: 0000000083b7d000 CR4: 0000000000350ef0