call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2250
 call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
 call_netdevice_notifiers net/core/dev.c:2302 [inline]
 unregister_netdevice_many_notify+0x1141/0x2140 net/core/dev.c:12446
 ops_exit_rtnl_list net/core/net_namespace.c:187 [inline]
 ops_undo_list+0x8ff/0xab0 net/core/net_namespace.c:248
 cleanup_net+0x499/0x920 net/core/net_namespace.c:702
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
------------[ cut here ]------------
kernel BUG at mm/filemap.c:858!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 10421 Comm: syz.2.766 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:__filemap_add_folio+0xfc2/0x12a0 mm/filemap.c:858
Code: 3e c2 ff 48 c7 c6 e0 89 dd 8b 4c 89 ef e8 c6 eb 12 00 90 0f 0b e8 fe 3d c2 ff 48 c7 c6 40 8a dd 8b 4c 89 ef e8 af eb 12 00 90 <0f> 0b e8 e7 3d c2 ff 48 c7 c6 c0 8a dd 8b 4c 89 ef e8 98 eb 12 00
RSP: 0018:ffffc90009a1f3f8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc9000640a000
RDX: 0000000000080000 RSI: ffffffff825a5708 RDI: ffff88807a0204c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000004
R13: ffffea0001d52880 R14: 00000000000001f0 R15: 0000000000000000
FS:  00007fd1d644c6c0(0000) GS:ffff888123ee5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34d07ff8 CR3: 000000007be72000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0x1d3/0x630 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:470 [inline]
 page_cache_ra_order+0x602/0xed0 mm/readahead.c:535
 do_sync_mmap_readahead mm/filemap.c:3428 [inline]
 filemap_fault+0x1943/0x3130 mm/filemap.c:3582
 __do_fault+0x10b/0x440 mm/memory.c:5425
 do_cow_fault mm/memory.c:5890 [inline]
 do_fault+0xeb2/0x1750 mm/memory.c:5996
 do_pte_missing mm/memory.c:4566 [inline]
 handle_pte_fault mm/memory.c:6379 [inline]
 __handle_mm_fault+0x187d/0x2a00 mm/memory.c:6517
 handle_mm_fault+0x37b/0xa30 mm/memory.c:6686
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x1178/0x32a0 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:4171 [inline]
 vm_mmap_pgoff+0x37f/0x470 mm/util.c:586
 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:606
 __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+0x115/0x840 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd1d559de99
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:00007fd1d644c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fd1d5825fa0 RCX: 00007fd1d559de99
RDX: 0000000000000ffb RSI: 0000000000810004 RDI: 0000000000000000
RBP: 00007fd1d5633eaf R08: 0000000000000003 R09: 0000000000008000
R10: 0008000000008012 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd1d5826038 R14: 00007fd1d5825fa0 R15: 00007ffcd86dfc28
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xfc2/0x12a0 mm/filemap.c:858
Code: 3e c2 ff 48 c7 c6 e0 89 dd 8b 4c 89 ef e8 c6 eb 12 00 90 0f 0b e8 fe 3d c2 ff 48 c7 c6 40 8a dd 8b 4c 89 ef e8 af eb 12 00 90 <0f> 0b e8 e7 3d c2 ff 48 c7 c6 c0 8a dd 8b 4c 89 ef e8 98 eb 12 00
RSP: 0018:ffffc90009a1f3f8 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc9000640a000
RDX: 0000000000080000 RSI: ffffffff825a5708 RDI: ffff88807a0204c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000004
R13: ffffea0001d52880 R14: 00000000000001f0 R15: 0000000000000000
FS:  00007fd1d644c6c0(0000) GS:ffff888123ee5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed41ded2f8 CR3: 000000007be72000 CR4: 00000000003526f0