syzkaller login: [ 30.721211] BUG: Bad rss-counter state mm:0000000002534083 type:MM_FILEPAGES val:33 [ 30.722444] BUG: Bad rss-counter state mm:0000000002534083 type:MM_ANONPAGES val:22 [ 30.824859] ================================================================== [ 30.825805] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.826756] Read of size 8 at addr ffff88800e2db798 by task sshd/220 [ 30.827550] [ 30.827772] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.828837] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.829891] Call Trace: [ 30.830241] [ 30.830539] dump_stack_lvl+0x91/0xf0 [ 30.831070] print_report+0xcc/0x620 [ 30.831577] ? __virt_addr_valid+0x102/0x340 [ 30.832158] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.832800] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.833452] kasan_report+0xbe/0xf0 [ 30.833954] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.834578] vma_interval_tree_remove+0xc75/0xec0 [ 30.835181] vma_prepare+0xc54/0x11a0 [ 30.835655] __split_vma+0x5af/0x950 [ 30.836138] ? __pfx___split_vma+0x10/0x10 [ 30.836668] ? find_held_lock+0x2c/0x110 [ 30.837192] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.837787] ? lock_is_held_type+0x9f/0x120 [ 30.838333] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.838955] ? mtree_range_walk+0x632/0x900 [ 30.839513] ? mas_walk+0x5c7/0x7c0 [ 30.840000] do_vmi_munmap+0x1f1/0x2b0 [ 30.840492] mmap_region+0x1f9/0x2660 [ 30.840980] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.841499] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.842225] ? __pfx_lock_acquire+0x10/0x10 [ 30.842762] ? __pfx_mmap_region+0x10/0x10 [ 30.843289] ? security_mmap_addr+0x7d/0xa0 [ 30.843829] ? get_unmapped_area+0x1f5/0x3f0 [ 30.844381] do_mmap+0x854/0xf00 [ 30.844825] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.845322] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.845906] ksys_mmap_pgoff+0x3af/0x500 [ 30.846425] do_syscall_64+0x3f/0x90 [ 30.846908] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.847565] RIP: 0033:0x7ff6f1a1bd82 [ 30.848026] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 30.850154] RSP: 002b:00007ffe8526c608 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.851065] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff6f1a1bd82 [ 30.851904] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ff6f0e55000 [ 30.852744] RBP: 00007ff6f0e55000 R08: 0000000000000009 R09: 0000000000001000 [ 30.853601] R10: 0000000000000812 R11: 0000000000000206 R12: 000055bf8488fb20 [ 30.854452] R13: 00007ffe8526c620 R14: 00007ffe8526c650 R15: 00007ffe8526c9b0 [ 30.855312] [ 30.855605] [ 30.855823] Allocated by task 213: [ 30.856251] kasan_save_stack+0x22/0x50 [ 30.856760] kasan_set_track+0x25/0x30 [ 30.857257] __kasan_slab_alloc+0x59/0x70 [ 30.857805] kmem_cache_alloc+0x16b/0x370 [ 30.858320] vm_area_dup+0x20/0x160 [ 30.858771] __split_vma+0x170/0x950 [ 30.859241] split_vma+0xc6/0x110 [ 30.859689] mprotect_fixup+0x8d2/0xb30 [ 30.860197] do_mprotect_pkey+0x87e/0xd40 [ 30.860719] __x64_sys_mprotect+0x78/0xc0 [ 30.861241] do_syscall_64+0x3f/0x90 [ 30.861731] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.862384] [ 30.862607] Freed by task 213: [ 30.863007] kasan_save_stack+0x22/0x50 [ 30.863527] kasan_set_track+0x25/0x30 [ 30.864025] kasan_save_free_info+0x2b/0x50 [ 30.864565] __kasan_slab_free+0x10a/0x190 [ 30.865109] kmem_cache_free+0x10d/0x4d0 [ 30.865633] rcu_core+0x8c8/0x2860 [ 30.866081] __do_softirq+0x1b7/0x7d4 [ 30.866557] [ 30.866777] Last potentially related work creation: [ 30.867370] kasan_save_stack+0x22/0x50 [ 30.867888] __kasan_record_aux_stack+0x8e/0xa0 [ 30.868467] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.869105] remove_vma+0x139/0x170 [ 30.869572] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.870127] do_vmi_munmap+0x1f1/0x2b0 [ 30.870613] __vm_munmap+0x138/0x3a0 [ 30.871082] __x64_sys_munmap+0x59/0x80 [ 30.871582] do_syscall_64+0x3f/0x90 [ 30.872073] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.872723] [ 30.872951] Second to last potentially related work creation: [ 30.873642] kasan_save_stack+0x22/0x50 [ 30.874150] __kasan_record_aux_stack+0x8e/0xa0 [ 30.874731] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.875373] remove_vma+0x139/0x170 [ 30.875824] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.876401] do_vmi_munmap+0x1f1/0x2b0 [ 30.876911] __vm_munmap+0x138/0x3a0 [ 30.877401] elf_map+0x26f/0x310 [ 30.877892] load_elf_binary+0xd82/0x5030 [ 30.878442] bprm_execve+0x803/0x1940 [ 30.878934] do_execveat_common+0x734/0x8e0 [ 30.879484] __x64_sys_execve+0x93/0xc0 [ 30.879993] do_syscall_64+0x3f/0x90 [ 30.880488] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.881164] [ 30.881391] The buggy address belongs to the object at ffff88800e2db740 [ 30.881391] which belongs to the cache vm_area_struct of size 168 [ 30.882958] The buggy address is located 88 bytes inside of [ 30.882958] freed 168-byte region [ffff88800e2db740, ffff88800e2db7e8) [ 30.884439] [ 30.884656] The buggy address belongs to the physical page: [ 30.885319] page:0000000066974a28 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe2db [ 30.886425] memcg:ffff88800f23c101 [ 30.886852] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.887561] page_type: 0xffffffff() [ 30.888021] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 30.888960] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f23c101 [ 30.889885] page dumped because: kasan: bad access detected [ 30.890554] [ 30.890778] Memory state around the buggy address: [ 30.891374] ffff88800e2db680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.892261] ffff88800e2db700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.893126] >ffff88800e2db780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.893996] ^ [ 30.894487] ffff88800e2db800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 30.895384] ffff88800e2db880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 30.896246] ================================================================== [ 30.897370] Disabling lock debugging due to kernel taint [ 32.881949] BUG: Bad rss-counter state mm:0000000021fd4115 type:MM_FILEPAGES val:33 [ 32.883356] BUG: Bad rss-counter state mm:0000000021fd4115 type:MM_ANONPAGES val:22 [ 33.305988] BUG: Bad rss-counter state mm:000000007a9b5d6a type:MM_FILEPAGES val:33 [ 33.306764] BUG: Bad rss-counter state mm:000000007a9b5d6a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:60115' (ECDSA) to the list of known hosts. 2023/06/21 07:31:12 fuzzer started 2023/06/21 07:31:12 dialing manager at localhost:36067 2023/06/21 07:31:12 checking machine... 2023/06/21 07:31:12 checking revisions... [ 33.944874] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:31:12 testing simple program... [ 33.978300] cgroup: Unknown subsys name 'net' [ 34.020305] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:31:12 Registers: info registers vcpu 0 RAX=fffffffffb928bd2 RBX=ffffffff85df209c RCX=ffffffff8171adfe RDX=0000000000000000 RSI=ffffffff86126f4c RDI=ffffffff85df209c RBP=ffffffff85df209c RSP=ffff88806ce099b8 R8 =ffffffff86126f4c R9 =ffff88806ce09ab0 R10=0000000000038001 R11=000000000001ddb6 R12=ffffffff85df209c R13=ffffffff85df209c R14=ffffffff85df209c R15=dffffc0000000000 RIP=ffffffff8112fc93 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f7ad03b4900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f7acf7f9640 CR3=000000000c538000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=656e6e6f637369443d4547415353454d XMM01=2e303120746f6f722072657375206d6f XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=d9700a3895d922d500000000000ae988 XMM05=4a00b1285c9b9f440000000000133f18 XMM06=19e9129bd510f2350000000000133060 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007fffc0880fe8 CR3=000000000f482000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=2032313a31333a3730203132206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031313a31333a3730203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000