[ 30.645982] BUG: Bad rss-counter state mm:0000000086fedd04 type:MM_FILEPAGES val:33 [ 30.646685] BUG: Bad rss-counter state mm:0000000086fedd04 type:MM_ANONPAGES val:22 [ 30.840810] ================================================================== [ 30.841398] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.842008] Read of size 8 at addr ffff88800eaf2058 by task sshd/219 [ 30.842544] [ 30.842704] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.843287] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.843936] Call Trace: [ 30.844142] [ 30.844327] dump_stack_lvl+0x91/0xf0 [ 30.844645] print_report+0xcc/0x620 [ 30.844967] ? __virt_addr_valid+0x102/0x340 [ 30.845324] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.845717] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.846576] kasan_report+0xbe/0xf0 [ 30.846910] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.847474] vma_interval_tree_remove+0xc75/0xec0 [ 30.847909] vma_prepare+0xc54/0x11a0 [ 30.848298] __split_vma+0x5af/0x950 [ 30.848636] ? __pfx___split_vma+0x10/0x10 [ 30.849011] ? find_held_lock+0x2c/0x110 [ 30.849425] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.849832] ? lock_is_held_type+0x9f/0x120 [ 30.850747] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.851239] ? mtree_range_walk+0x632/0x900 [ 30.851640] ? mas_walk+0x5c7/0x7c0 [ 30.851982] do_vmi_munmap+0x1f1/0x2b0 [ 30.852381] mmap_region+0x1f9/0x2660 [ 30.852722] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.853092] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.853654] ? __pfx_lock_acquire+0x10/0x10 [ 30.858097] ? __pfx_mmap_region+0x10/0x10 [ 30.858497] ? security_mmap_addr+0x7d/0xa0 [ 30.858832] ? get_unmapped_area+0x1f5/0x3f0 [ 30.859215] do_mmap+0x854/0xf00 [ 30.859482] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.859797] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.860206] ksys_mmap_pgoff+0x3af/0x500 [ 30.860528] do_syscall_64+0x3f/0x90 [ 30.860837] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.861300] RIP: 0033:0x7f598078ed82 [ 30.861592] 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 [ 30.863058] RSP: 002b:00007fffc9e5c568 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.863758] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f598078ed82 [ 30.864396] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f597fbc8000 [ 30.864994] RBP: 00007f597fbc8000 R08: 0000000000000009 R09: 0000000000001000 [ 30.865629] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f97b551ec0 [ 30.866272] R13: 00007fffc9e5c580 R14: 00007fffc9e5c5b0 R15: 00007fffc9e5c910 [ 30.866865] [ 30.867065] [ 30.867266] Allocated by task 212: [ 30.867560] kasan_save_stack+0x22/0x50 [ 30.867923] kasan_set_track+0x25/0x30 [ 30.874181] __kasan_slab_alloc+0x59/0x70 [ 30.874521] kmem_cache_alloc+0x16b/0x370 [ 30.874853] vm_area_dup+0x20/0x160 [ 30.875190] __split_vma+0x170/0x950 [ 30.875490] split_vma+0xc6/0x110 [ 30.875769] mprotect_fixup+0x8d2/0xb30 [ 30.876097] do_mprotect_pkey+0x87e/0xd40 [ 30.876483] __x64_sys_mprotect+0x78/0xc0 [ 30.876816] do_syscall_64+0x3f/0x90 [ 30.877163] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.877584] [ 30.877727] Freed by task 212: [ 30.878000] kasan_save_stack+0x22/0x50 [ 30.878434] kasan_set_track+0x25/0x30 [ 30.878784] kasan_save_free_info+0x2b/0x50 [ 30.879218] __kasan_slab_free+0x10a/0x190 [ 30.879600] kmem_cache_free+0x10d/0x4d0 [ 30.879966] rcu_core+0x8c8/0x2860 [ 30.880325] __do_softirq+0x1b7/0x7d4 [ 30.880664] [ 30.880816] Last potentially related work creation: [ 30.881272] kasan_save_stack+0x22/0x50 [ 30.881625] __kasan_record_aux_stack+0x8e/0xa0 [ 30.882060] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.882556] remove_vma+0x139/0x170 [ 30.882880] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.883374] do_vmi_munmap+0x1f1/0x2b0 [ 30.883718] __vm_munmap+0x138/0x3a0 [ 30.884057] __x64_sys_munmap+0x59/0x80 [ 30.884457] do_syscall_64+0x3f/0x90 [ 30.884795] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.885294] [ 30.885444] The buggy address belongs to the object at ffff88800eaf2000 [ 30.885444] which belongs to the cache vm_area_struct of size 168 [ 30.886530] The buggy address is located 88 bytes inside of [ 30.886530] freed 168-byte region [ffff88800eaf2000, ffff88800eaf20a8) [ 30.887544] [ 30.887700] The buggy address belongs to the physical page: [ 30.888239] page:00000000047106cf refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeaf2 [ 30.889001] memcg:ffff88800fc4b801 [ 30.889346] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.889791] page_type: 0xffffffff() [ 30.890225] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.890877] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fc4b801 [ 30.891565] page dumped because: kasan: bad access detected [ 30.892004] [ 30.892202] Memory state around the buggy address: [ 30.892617] ffff88800eaf1f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.893280] ffff88800eaf1f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.893870] >ffff88800eaf2000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.894510] ^ [ 30.895213] ffff88800eaf2080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.895802] ffff88800eaf2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.896453] ================================================================== [ 30.897662] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.406897] BUG: Bad rss-counter state mm:00000000fec1110a type:MM_FILEPAGES val:33 [ 34.408605] BUG: Bad rss-counter state mm:00000000fec1110a type:MM_ANONPAGES val:22 [ 35.316564] BUG: Bad rss-counter state mm:0000000023df51aa type:MM_FILEPAGES val:33 [ 35.317221] BUG: Bad rss-counter state mm:0000000023df51aa type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:17243' (ECDSA) to the list of known hosts. 2023/06/21 10:19:55 fuzzer started 2023/06/21 10:19:55 dialing manager at localhost:36067 2023/06/21 10:19:55 checking machine... 2023/06/21 10:19:55 checking revisions... [ 36.182941] kmemleak: Automatic memory scanning thread ended 2023/06/21 10:19:55 testing simple program... [ 36.240410] cgroup: Unknown subsys name 'net' [ 36.322395] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 10:19:55 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=1ffff11002fd8e0c RSI=ffffffff844ab9dd RDI=0000000000000005 RBP=ffff888017ec7aa8 RSP=ffff888017ec6fd8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=ffff8880100cb2b8 R12=ffff888017ec7ae7 R13=0000000000000003 R14=ffff888017ec7048 R15=ffff888017ec71f8 RIP=ffffffff814c0864 RFL=00000282 [--S----] 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 00007f2c21c95900 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=00007f2c21c956f8 CR3=00000000161b0000 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=00000000000000000000000000000000 XMM01=ffffffffffff00000000000000000000 XMM02=ffffffffffff00000000000000000000 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=00000000000073707574726174732064 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=000000000000002f RCX=ffffffff818a3270 RDX=ffff88800e5f0000 RSI=0000000000000000 RDI=0000000000000001 RBP=0000000552008c24 RSP=ffff888018fa7710 R8 =0000000000000001 R9 =0000000000000000 R10=000000000000002f R11=0000000000000001 R12=ffff888018fa7984 R13=eaadeb94d1a50a24 R14=ffff888018fa7948 R15=ffff88800fee3326 RIP=ffffffff814c0860 RFL=00000202 [-------] 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 00007f2c21c95900 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=00007f2c220c5790 CR3=000000000e792000 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=0000000000000000fffffffe7ffbfeff XMM01=00000000000000020000000000000000 XMM02=00000000000000008000000000000006 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=2520737365726464616e657473696c00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000