pcpu_balance_workfn+0x9c2/0xe00 mm/percpu.c:2210
 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
------------[ cut here ]------------
kernel BUG at mm/filemap.c:3579!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 1916 Comm: syz.7.7340 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:filemap_fault+0x1c68/0x29d0 mm/filemap.c:3579
Code: f4 2f 00 e9 3f ef ff ff 4c 89 f7 e8 a2 f4 2f 00 e9 3d e7 ff ff e8 88 18 c6 ff 48 c7 c6 a0 ef 99 8b 48 89 df e8 c9 f5 10 00 90 <0f> 0b e8 71 18 c6 ff 48 c7 c6 00 e6 99 8b 48 89 df e8 b2 f5 10 00
RSP: 0018:ffffc90003867ad8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: ffffea00028aff00 RCX: ffffc900109b3000
RDX: 0000000000080000 RSI: ffffffff81f8e3d7 RDI: ffff88805e600484
RBP: ffffc90003867d60 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff9088cdd7 R11: 0000000000000001 R12: ffff88802401ab00
R13: 0000000000000001 R14: 0000000000000001 R15: 00000000000ffffd
FS:  00007f6c4ab4b6c0(0000) GS:ffff8881248f1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe318c085e3 CR3: 00000000302a6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __do_fault+0x10d/0x490 mm/memory.c:5320
 do_read_fault mm/memory.c:5755 [inline]
 do_fault+0xae4/0x1ad0 mm/memory.c:5889
 do_pte_missing mm/memory.c:4401 [inline]
 handle_pte_fault mm/memory.c:6273 [inline]
 __handle_mm_fault+0x1919/0x2bb0 mm/memory.c:6411
 handle_mm_fault+0x3fe/0xad0 mm/memory.c:6580
 do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x64/0xc0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f6c49d753e0
Code: 66 2e 0f 1f 84 00 00 00 00 00 48 85 f6 74 35 49 89 f0 89 f8 62 a1 fd 00 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 60 02 00 00 <62> f3 7d 20 3f 07 00 c5 fb 93 c0 48 83 fe 20 76 0f 85 c0 74 6b f3
RSP: 002b:00007f6c4ab49f58 EFLAGS: 00010287
RAX: 0000000000000040 RBX: 00007f6c4ab4a024 RCX: 0000000000000000
RDX: 0000200000000040 RSI: 000000000000000f RDI: 0000200000000040
RBP: 000000000000000a R08: 000000000000000f R09: 0000000000000000
R10: 0000200000000040 R11: 0000000000000286 R12: 0000200000000040
R13: 00007f6c4ab49fc0 R14: 00007f6c49fe6090 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_fault+0x1c68/0x29d0 mm/filemap.c:3579
Code: f4 2f 00 e9 3f ef ff ff 4c 89 f7 e8 a2 f4 2f 00 e9 3d e7 ff ff e8 88 18 c6 ff 48 c7 c6 a0 ef 99 8b 48 89 df e8 c9 f5 10 00 90 <0f> 0b e8 71 18 c6 ff 48 c7 c6 00 e6 99 8b 48 89 df e8 b2 f5 10 00
RSP: 0018:ffffc90003867ad8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: ffffea00028aff00 RCX: ffffc900109b3000
RDX: 0000000000080000 RSI: ffffffff81f8e3d7 RDI: ffff88805e600484
RBP: ffffc90003867d60 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff9088cdd7 R11: 0000000000000001 R12: ffff88802401ab00
R13: 0000000000000001 R14: 0000000000000001 R15: 00000000000ffffd
FS:  00007f6c4ab4b6c0(0000) GS:ffff8881248f1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f76251b7198 CR3: 00000000302a6000 CR4: 00000000003526f0