[ 24.525312] BUG: Bad rss-counter state mm:00000000e6c51a7c type:MM_FILEPAGES val:33 [ 24.525344] BUG: Bad rss-counter state mm:00000000e6c51a7c type:MM_ANONPAGES val:22 [ 24.830417] ================================================================== [ 24.831404] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.832438] Read of size 8 at addr ffff88801a37c310 by task sshd/222 [ 24.833380] [ 24.833617] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.834589] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.835697] Call Trace: [ 24.836051] [ 24.836365] dump_stack_lvl+0x91/0xf0 [ 24.836899] print_report+0xcc/0x620 [ 24.837429] ? __virt_addr_valid+0x102/0x340 [ 24.838043] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.838719] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.839402] kasan_report+0xbe/0xf0 [ 24.839930] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.840610] vma_interval_tree_remove+0xc75/0xec0 [ 24.841271] vma_prepare+0xc54/0x11a0 [ 24.841793] __split_vma+0x5af/0x950 [ 24.842325] ? __pfx___split_vma+0x10/0x10 [ 24.842909] ? find_held_lock+0x2c/0x110 [ 24.843504] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.844108] ? lock_is_held_type+0x9f/0x120 [ 24.844683] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.845329] ? mtree_range_walk+0x632/0x900 [ 24.845913] ? mas_walk+0x5c7/0x7c0 [ 24.846429] do_vmi_munmap+0x1f1/0x2b0 [ 24.846948] mmap_region+0x1f9/0x2660 [ 24.847452] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.847992] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.848751] ? __pfx_lock_acquire+0x10/0x10 [ 24.849316] ? __pfx_mmap_region+0x10/0x10 [ 24.849875] ? security_mmap_addr+0x7d/0xa0 [ 24.850444] ? get_unmapped_area+0x1f5/0x3f0 [ 24.851036] do_mmap+0x854/0xf00 [ 24.851497] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.852025] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.852620] ksys_mmap_pgoff+0x3af/0x500 [ 24.853161] do_syscall_64+0x3f/0x90 [ 24.853667] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.854366] RIP: 0033:0x7fcde6699d82 [ 24.854861] 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 [ 24.857131] RSP: 002b:00007fff58d3eac8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.858097] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fcde6699d82 [ 24.859000] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fcde5ad3000 [ 24.859893] RBP: 00007fcde5ad3000 R08: 0000000000000009 R09: 0000000000001000 [ 24.860781] R10: 0000000000000812 R11: 0000000000000206 R12: 00005565f3579f60 [ 24.861679] R13: 00007fff58d3eae0 R14: 00007fff58d3eb10 R15: 00007fff58d3ee70 [ 24.862601] [ 24.862918] [ 24.863151] Allocated by task 208: [ 24.863606] kasan_save_stack+0x22/0x50 [ 24.864146] kasan_set_track+0x25/0x30 [ 24.864669] __kasan_slab_alloc+0x59/0x70 [ 24.865230] kmem_cache_alloc+0x16b/0x370 [ 24.865776] vm_area_dup+0x20/0x160 [ 24.866280] __split_vma+0x170/0x950 [ 24.866782] split_vma+0xc6/0x110 [ 24.867255] mprotect_fixup+0x8d2/0xb30 [ 24.867795] do_mprotect_pkey+0x87e/0xd40 [ 24.868354] __x64_sys_mprotect+0x78/0xc0 [ 24.868914] do_syscall_64+0x3f/0x90 [ 24.869420] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.870119] [ 24.870349] Freed by task 113: [ 24.870767] kasan_save_stack+0x22/0x50 [ 24.871300] kasan_set_track+0x25/0x30 [ 24.871823] kasan_save_free_info+0x2b/0x50 [ 24.872385] __kasan_slab_free+0x10a/0x190 [ 24.872945] kmem_cache_free+0x10d/0x4d0 [ 24.873483] rcu_core+0x8c8/0x2860 [ 24.873962] __do_softirq+0x1b7/0x7d4 [ 24.874492] [ 24.874722] Last potentially related work creation: [ 24.875342] kasan_save_stack+0x22/0x50 [ 24.875880] __kasan_record_aux_stack+0x8e/0xa0 [ 24.876492] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.877180] remove_vma+0x139/0x170 [ 24.877660] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.878257] do_vmi_munmap+0x1f1/0x2b0 [ 24.878770] __vm_munmap+0x138/0x3a0 [ 24.879265] __x64_sys_munmap+0x59/0x80 [ 24.879793] do_syscall_64+0x3f/0x90 [ 24.880300] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.880976] [ 24.881203] The buggy address belongs to the object at ffff88801a37c2b8 [ 24.881203] which belongs to the cache vm_area_struct of size 168 [ 24.882771] The buggy address is located 88 bytes inside of [ 24.882771] freed 168-byte region [ffff88801a37c2b8, ffff88801a37c360) [ 24.884241] [ 24.884468] The buggy address belongs to the physical page: [ 24.885173] page:00000000bd06dc35 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a37c [ 24.886338] memcg:ffff88801a36a401 [ 24.886794] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.887477] page_type: 0xffffffff() [ 24.887963] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 24.888957] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a36a401 [ 24.889923] page dumped because: kasan: bad access detected [ 24.890637] [ 24.890867] Memory state around the buggy address: [ 24.891490] ffff88801a37c200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 24.892405] ffff88801a37c280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 24.893319] >ffff88801a37c300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 24.894245] ^ [ 24.894744] ffff88801a37c380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 24.895660] ffff88801a37c400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 24.896573] ================================================================== [ 24.897755] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 27.126887] BUG: Bad rss-counter state mm:000000001b702b1e type:MM_FILEPAGES val:33 [ 27.128530] BUG: Bad rss-counter state mm:000000001b702b1e type:MM_ANONPAGES val:22 [ 27.536926] BUG: Bad rss-counter state mm:0000000087bd0d1b type:MM_FILEPAGES val:33 [ 27.538305] BUG: Bad rss-counter state mm:0000000087bd0d1b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18309' (ECDSA) to the list of known hosts. 2023/06/20 02:52:40 fuzzer started 2023/06/20 02:52:40 dialing manager at localhost:44161 2023/06/20 02:52:40 checking machine... 2023/06/20 02:52:40 checking revisions... [ 28.313154] kmemleak: Automatic memory scanning thread ended 2023/06/20 02:52:40 testing simple program... [ 28.361711] cgroup: Unknown subsys name 'net' [ 28.434129] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:52:39 Registers: info registers vcpu 0 RAX=ffffffff8613751f RBX=0000000000000001 RCX=ffffffff8613751a RDX=dffffc0000000000 RSI=0000000000000000 RDI=1ffffffff0c26ea3 RBP=ffff888008d7f9b0 RSP=ffff888008d7f8e8 R8 =ffffffff8613751e R9 =ffff888008d7f998 R10=0000000000038001 R11=0000000000020d8a R12=ffff888008d7f9b8 R13=ffff888008d7f9a0 R14=ffff888008d7f999 R15=ffff888008d7f958 RIP=ffffffff81130aa4 RFL=00000217 [----APC] 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 0000000000000000 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=00007fc36dc008e0 CR3=000000000dfba000 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=2039333a32353a3230203032206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039333a32353a3230203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffffffff856529e0 RCX=0000000000000000 RDX=ffff8880158d0000 RSI=ffffffff814c83e7 RDI=ffffffff856529e0 RBP=00007f7c0809c477 RSP=ffff888016cef930 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=00007f7c0809c477 R13=0000000000000000 R14=ffff8880158d0000 R15=0000000000000cc0 RIP=ffffffff8135bcf0 RFL=00000293 [--S-A-C] 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 00007f7c07ba9900 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=00007ffeb7576000 CR3=000000000ebae000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000