blkdev_ioctl+0x513/0x6f0 block/ioctl.c:786
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:858!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 1035 Comm: syz.1.9388 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__filemap_add_folio+0xfcf/0x1280 mm/filemap.c:858
Code: 25 c6 ff 48 c7 c6 60 31 bd 8b 4c 89 ef e8 d9 3f 12 00 90 0f 0b e8 d1 25 c6 ff 48 c7 c6 c0 31 bd 8b 4c 89 ef e8 c2 3f 12 00 90 <0f> 0b e8 ba 25 c6 ff 90 0f 0b 90 e9 4b fe ff ff e8 ac 25 c6 ff 90
RSP: 0018:ffffc90004cdf428 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc9001770e000
RDX: 0000000000080000 RSI: ffffffff8254f688 RDI: ffff888026d241c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000004
R13: ffffea0001a157c0 R14: 0000000000000000 R15: 1ffff9200099beaf
FS:  00007f15110176c0(0000) GS:ffff88812433c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c403f96 CR3: 000000002a6b6000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 filemap_add_folio+0x1d8/0x690 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:456 [inline]
 page_cache_ra_order+0x614/0xf30 mm/readahead.c:515
 do_sync_mmap_readahead mm/filemap.c:3405 [inline]
 filemap_fault+0x191a/0x2eb0 mm/filemap.c:3554
 __do_fault+0x10d/0x550 mm/memory.c:5364
 do_shared_fault mm/memory.c:5863 [inline]
 do_fault+0x2db/0x18e0 mm/memory.c:5937
 do_pte_missing mm/memory.c:4477 [inline]
 handle_pte_fault mm/memory.c:6317 [inline]
 __handle_mm_fault+0x1815/0x2b60 mm/memory.c:6455
 handle_mm_fault+0x36d/0xa20 mm/memory.c:6624
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0xf9c/0x34d0 mm/gup.c:1428
 __get_user_pages_locked mm/gup.c:1692 [inline]
 faultin_page_range+0x1f1/0x9e0 mm/gup.c:1912
 madvise_populate mm/madvise.c:974 [inline]
 madvise_do_behavior+0x354/0x510 mm/madvise.c:1933
 do_madvise+0x195/0x240 mm/madvise.c:2028
 __do_sys_madvise mm/madvise.c:2037 [inline]
 __se_sys_madvise mm/madvise.c:2035 [inline]
 __x64_sys_madvise+0xa9/0x110 mm/madvise.c:2035
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f151019c819
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:00007f1511017028 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f1510416090 RCX: 00007f151019c819
RDX: 0000000000000017 RSI: 0000000000800000 RDI: 00002000000ec000
RBP: 00007f1510232c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1510416128 R14: 00007f1510416090 R15: 00007ffdb1432cf8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xfcf/0x1280 mm/filemap.c:858
Code: 25 c6 ff 48 c7 c6 60 31 bd 8b 4c 89 ef e8 d9 3f 12 00 90 0f 0b e8 d1 25 c6 ff 48 c7 c6 c0 31 bd 8b 4c 89 ef e8 c2 3f 12 00 90 <0f> 0b e8 ba 25 c6 ff 90 0f 0b 90 e9 4b fe ff ff e8 ac 25 c6 ff 90
RSP: 0018:ffffc90004cdf428 EFLAGS: 00010246
RAX: 0000000000080000 RBX: 0000000000112cc0 RCX: ffffc9001770e000
RDX: 0000000000080000 RSI: ffffffff8254f688 RDI: ffff888026d241c4
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000004
R13: ffffea0001a157c0 R14: 0000000000000000 R15: 1ffff9200099beaf
FS:  00007f15110176c0(0000) GS:ffff88812433c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7389fa8d58 CR3: 000000002a6b6000 CR4: 0000000000350ef0