page dumped because: VM_BUG_ON_PAGE(!unmap_success)
------------[ cut here ]------------
kernel BUG at mm/huge_memory.c:2349!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 10247 Comm: syz-executor.2 Not tainted 5.11.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unmap_page mm/huge_memory.c:2349 [inline]
RIP: 0010:split_huge_page_to_list+0x600/0x1320 mm/huge_memory.c:2718
Code: 4c 89 ff e8 a2 cc f8 ff 0f 0b 48 c7 c6 88 eb 6d 84 4c 89 ff e8 91 cc f8 ff 0f 0b 48 c7 c6 28 76 6e 84 4c 89 ff e8 80 cc f8 ff <0f> 0b 48 c7 c6 48 76 6e 84 4c 89 ff e8 6f cc f8 ff 0f 0b 49 8b 87
RSP: 0018:ffffc9000306bb00 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88810015ee60 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8493ec1e RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000004 R12: 0000000000000000
R13: ffff88810cf0ba28 R14: ffffea0004808000 R15: ffffea0004808000
FS:  00007f3d0e60f700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d937665160 CR3: 000000011e67e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 split_huge_page include/linux/huge_mm.h:187 [inline]
 madvise_free_pte_range+0x322/0x8e0 mm/madvise.c:633
 walk_pmd_range mm/pagewalk.c:89 [inline]
 walk_pud_range mm/pagewalk.c:160 [inline]
 walk_p4d_range mm/pagewalk.c:193 [inline]
 walk_pgd_range mm/pagewalk.c:229 [inline]
 __walk_page_range+0x32e/0x970 mm/pagewalk.c:331
 walk_page_range+0xc2/0x170 mm/pagewalk.c:427
 madvise_free_single_vma+0x177/0x200 mm/madvise.c:731
 madvise_dontneed_free mm/madvise.c:819 [inline]
 madvise_vma mm/madvise.c:936 [inline]
 do_madvise+0x497/0xde0 mm/madvise.c:1132
 __do_sys_madvise mm/madvise.c:1158 [inline]
 __se_sys_madvise mm/madvise.c:1156 [inline]
 __x64_sys_madvise+0x21/0x30 mm/madvise.c:1156
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3d0e60ec68 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219
RDX: 0000000000000008 RSI: 0000000000c00000 RDI: 0000000020400000
RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffc3a32e31f R14: 00007f3d0e60f9c0 R15: 000000000119bf8c
Modules linked in:
---[ end trace 0dbc2abf5d608179 ]---
RIP: 0010:unmap_page mm/huge_memory.c:2349 [inline]
RIP: 0010:split_huge_page_to_list+0x600/0x1320 mm/huge_memory.c:2718
Code: 4c 89 ff e8 a2 cc f8 ff 0f 0b 48 c7 c6 88 eb 6d 84 4c 89 ff e8 91 cc f8 ff 0f 0b 48 c7 c6 28 76 6e 84 4c 89 ff e8 80 cc f8 ff <0f> 0b 48 c7 c6 48 76 6e 84 4c 89 ff e8 6f cc f8 ff 0f 0b 49 8b 87
RSP: 0018:ffffc9000306bb00 EFLAGS: 00010282

RAX: 0000000000000000 RBX: ffff88810015ee60 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8493ec1e RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000004 R12: 0000000000000000
R13: ffff88810cf0ba28 R14: ffffea0004808000 R15: ffffea0004808000
FS:  00007f3d0e60f700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d937665160 CR3: 000000011e67e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400