syzkaller login: [ 30.654197] BUG: Bad rss-counter state mm:000000006200e5a2 type:MM_FILEPAGES val:33 [ 30.655372] BUG: Bad rss-counter state mm:000000006200e5a2 type:MM_ANONPAGES val:22 [ 30.831462] ================================================================== [ 30.832596] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.833704] Read of size 8 at addr ffff88800fcb16b0 by task sshd/222 [ 30.834790] [ 30.835051] CPU: 1 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.836055] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.837261] Call Trace: [ 30.837585] [ 30.837913] dump_stack_lvl+0x91/0xf0 [ 30.838416] print_report+0xcc/0x620 [ 30.838926] ? __virt_addr_valid+0x102/0x340 [ 30.839589] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.840341] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.841113] kasan_report+0xbe/0xf0 [ 30.841704] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.842501] vma_interval_tree_remove+0xc75/0xec0 [ 30.843264] vma_prepare+0xc54/0x11a0 [ 30.843870] __split_vma+0x5af/0x950 [ 30.844471] ? __pfx___split_vma+0x10/0x10 [ 30.845151] ? find_held_lock+0x2c/0x110 [ 30.845810] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.846505] ? lock_is_held_type+0x9f/0x120 [ 30.847167] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.847916] ? mtree_range_walk+0x632/0x900 [ 30.848599] ? mas_walk+0x5c7/0x7c0 [ 30.849180] do_vmi_munmap+0x1f1/0x2b0 [ 30.849807] mmap_region+0x1f9/0x2660 [ 30.850400] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.851024] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.851814] ? __pfx_lock_acquire+0x10/0x10 [ 30.852354] ? __pfx_mmap_region+0x10/0x10 [ 30.852891] ? security_mmap_addr+0x7d/0xa0 [ 30.853436] ? get_unmapped_area+0x1f5/0x3f0 [ 30.853993] do_mmap+0x854/0xf00 [ 30.854436] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.854930] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.855497] ksys_mmap_pgoff+0x3af/0x500 [ 30.856009] do_syscall_64+0x3f/0x90 [ 30.856488] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.857140] RIP: 0033:0x7fa99ce72d82 [ 30.857604] 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 [ 30.859768] RSP: 002b:00007ffed2063fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.860683] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa99ce72d82 [ 30.861540] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa99c2ac000 [ 30.862420] RBP: 00007fa99c2ac000 R08: 0000000000000009 R09: 0000000000001000 [ 30.863268] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c877787980 [ 30.864120] R13: 00007ffed2063ff0 R14: 00007ffed2064020 R15: 00007ffed2064380 [ 30.864983] [ 30.865277] [ 30.865490] Allocated by task 213: [ 30.865924] kasan_save_stack+0x22/0x50 [ 30.866437] kasan_set_track+0x25/0x30 [ 30.866938] __kasan_slab_alloc+0x59/0x70 [ 30.867468] kmem_cache_alloc+0x16b/0x370 [ 30.867991] vm_area_dup+0x20/0x160 [ 30.868448] __split_vma+0x170/0x950 [ 30.868912] split_vma+0xc6/0x110 [ 30.869360] mprotect_fixup+0x8d2/0xb30 [ 30.869883] do_mprotect_pkey+0x87e/0xd40 [ 30.870406] __x64_sys_mprotect+0x78/0xc0 [ 30.870928] do_syscall_64+0x3f/0x90 [ 30.871402] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.872040] [ 30.872256] Freed by task 213: [ 30.872648] kasan_save_stack+0x22/0x50 [ 30.873157] kasan_set_track+0x25/0x30 [ 30.873672] kasan_save_free_info+0x2b/0x50 [ 30.874291] __kasan_slab_free+0x10a/0x190 [ 30.874873] kmem_cache_free+0x10d/0x4d0 [ 30.875422] rcu_core+0x8c8/0x2860 [ 30.875896] __do_softirq+0x1b7/0x7d4 [ 30.876409] [ 30.876643] Last potentially related work creation: [ 30.877282] kasan_save_stack+0x22/0x50 [ 30.877835] __kasan_record_aux_stack+0x8e/0xa0 [ 30.878451] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.879149] remove_vma+0x139/0x170 [ 30.879642] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.880246] do_vmi_munmap+0x1f1/0x2b0 [ 30.880772] __vm_munmap+0x138/0x3a0 [ 30.881277] __x64_sys_munmap+0x59/0x80 [ 30.881828] do_syscall_64+0x3f/0x90 [ 30.882344] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.883042] [ 30.883269] The buggy address belongs to the object at ffff88800fcb1658 [ 30.883269] which belongs to the cache vm_area_struct of size 168 [ 30.884862] The buggy address is located 88 bytes inside of [ 30.884862] freed 168-byte region [ffff88800fcb1658, ffff88800fcb1700) [ 30.886402] [ 30.886631] The buggy address belongs to the physical page: [ 30.887343] page:0000000096a7c60d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfcb1 [ 30.888514] memcg:ffff88800fc78001 [ 30.888976] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.889679] page_type: 0xffffffff() [ 30.890179] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.891178] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fc78001 [ 30.892166] page dumped because: kasan: bad access detected [ 30.892889] [ 30.893123] Memory state around the buggy address: [ 30.893765] ffff88800fcb1580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.894696] ffff88800fcb1600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.895632] >ffff88800fcb1680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.896549] ^ [ 30.897178] ffff88800fcb1700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.898110] ffff88800fcb1780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.899036] ================================================================== [ 30.900261] Disabling lock debugging due to kernel taint [ 33.733233] BUG: Bad rss-counter state mm:0000000032408f14 type:MM_FILEPAGES val:33 [ 33.734605] BUG: Bad rss-counter state mm:0000000032408f14 type:MM_ANONPAGES val:22 [ 34.232313] BUG: Bad rss-counter state mm:0000000099ae3d82 type:MM_FILEPAGES val:33 [ 34.233547] BUG: Bad rss-counter state mm:0000000099ae3d82 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7522' (ECDSA) to the list of known hosts. 2023/06/20 16:48:02 fuzzer started 2023/06/20 16:48:02 dialing manager at localhost:36067 2023/06/20 16:48:02 checking machine... 2023/06/20 16:48:02 checking revisions... [ 34.949212] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:48:02 testing simple program... [ 35.003551] cgroup: Unknown subsys name 'net' [ 35.042645] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:48:01 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88800e46f683 RCX=0000000000000000 RDX=ffff888015e51b40 RSI=ffffffff81865355 RDI=0000000000000007 RBP=ffff88800e46f680 RSP=ffff888015fffea0 R8 =0000000000000007 R9 =0000000000000000 R10=000000000000011a R11=00000000000b6a61 R12=1ffff11002bfffd5 R13=000000000000011a R14=ffff88800e46f770 R15=0000000000000bd3 RIP=ffffffff814c089b 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f042d2b5700 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=00007fbb706b6b90 CR3=000000000d3aa000 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=2031303a38343a3631203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031303a38343a3631203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 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=ffff888008c04400 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=00007ffe4d693000 CR3=000000000946a000 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=00000000000000000000000000000000 XMM01=00ff0000000000000000000000000000 XMM02=2f00646f6874656d5f74707972636e65 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ff00ffffffffffffffffffffffffffff XMM08=20002020202020200020202020202020 XMM09=0000ffffffffffffffffffffffffffff XMM10=00002020202020200020202020202020 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000