prot 8000000000000025 anon_vma ffff88807a22c990 vm_ops 0000000000000000 pgoff 20000 file 0000000000000000 private_data 0000000000000000 flags: 0x8102172(write|mayread|maywrite|mayexec|growsdown|locked|account|softdirty) ------------[ cut here ]------------ kernel BUG at mm/mmap.c:1108! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6943 Comm: syz-executor127 Not tainted 6.2.0-syzkaller-12859-g528125268588 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:find_mergeable_anon_vma+0x6f0/0x840 mm/mmap.c:1108 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 6b 48 3b 6b 50 0f 85 08 fb ff ff e9 06 fb ff ff e8 38 ad bf ff 48 89 ef e8 70 a5 fa ff <0f> 0b 4c 89 f7 e8 06 29 11 00 e9 d2 f9 ff ff e8 fc 28 11 00 e9 a0 RSP: 0018:ffffc90005b4f888 EFLAGS: 00010286 RAX: 0000000000000130 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81693b2c RDI: 0000000000000005 RBP: ffff888028b5c0e0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: ffffc90005b4f8b0 R13: 1ffff92000b69f12 R14: ffff888028b5c0e8 R15: fff0000000000fff FS: 00007f8022f28700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8022fcbb38 CR3: 0000000075f88000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __anon_vma_prepare+0x7d/0x580 mm/rmap.c:199 anon_vma_prepare include/linux/rmap.h:159 [inline] do_anonymous_page mm/memory.c:4050 [inline] handle_pte_fault mm/memory.c:4907 [inline] __handle_mm_fault+0x3a8f/0x3e60 mm/memory.c:5051 handle_mm_fault+0x2ba/0x9c0 mm/memory.c:5197 faultin_page mm/gup.c:925 [inline] __get_user_pages+0x4da/0xf30 mm/gup.c:1147 populate_vma_page_range+0x2df/0x420 mm/gup.c:1543 __mm_populate+0x105/0x3b0 mm/gup.c:1652 mm_populate include/linux/mm.h:3026 [inline] vm_mmap_pgoff+0x201/0x280 mm/util.c:547 ksys_mmap_pgoff+0x7d/0x5a0 mm/mmap.c:1410 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8022f76959 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8022f282f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f8022f76959 RDX: 0000000000000002 RSI: 0000000000001000 RDI: 0000000020002000 RBP: 00007f8022ffe3e8 R08: 00000000ffffffff R09: 0000000000000000 R10: 840000000000a132 R11: 0000000000000246 R12: 840000000000a132 R13: 00007f8022ffe3e0 R14: 00007f8022ffe3ec R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:find_mergeable_anon_vma+0x6f0/0x840 mm/mmap.c:1108 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 6b 48 3b 6b 50 0f 85 08 fb ff ff e9 06 fb ff ff e8 38 ad bf ff 48 89 ef e8 70 a5 fa ff <0f> 0b 4c 89 f7 e8 06 29 11 00 e9 d2 f9 ff ff e8 fc 28 11 00 e9 a0 RSP: 0018:ffffc90005b4f888 EFLAGS: 00010286 RAX: 0000000000000130 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81693b2c RDI: 0000000000000005 RBP: ffff888028b5c0e0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: ffffc90005b4f8b0 R13: 1ffff92000b69f12 R14: ffff888028b5c0e8 R15: fff0000000000fff FS: 00007f8022f28700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc9efe7960 CR3: 0000000075f88000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400