[ 24.326350] BUG: Bad rss-counter state mm:0000000046b41241 type:MM_FILEPAGES val:33 [ 24.327547] BUG: Bad rss-counter state mm:0000000046b41241 type:MM_ANONPAGES val:22 [ 24.372889] ================================================================== [ 24.373950] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.374828] Read of size 8 at addr ffff88800e225ed8 by task sshd/220 [ 24.375567] [ 24.375774] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.376591] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.377513] Call Trace: [ 24.377818] [ 24.378098] dump_stack_lvl+0x91/0xf0 [ 24.378558] print_report+0xcc/0x620 [ 24.379019] ? __virt_addr_valid+0x102/0x340 [ 24.379543] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.380125] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.380706] kasan_report+0xbe/0xf0 [ 24.381159] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.381748] vma_interval_tree_remove+0xc75/0xec0 [ 24.382328] vma_prepare+0xc54/0x11a0 [ 24.382785] __split_vma+0x5af/0x950 [ 24.383236] ? __pfx___split_vma+0x10/0x10 [ 24.383737] ? find_held_lock+0x2c/0x110 [ 24.384244] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.384795] ? lock_is_held_type+0x9f/0x120 [ 24.385323] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.385977] ? mtree_range_walk+0x632/0x900 [ 24.386547] ? mas_walk+0x5c7/0x7c0 [ 24.387029] do_vmi_munmap+0x1f1/0x2b0 [ 24.387538] mmap_region+0x1f9/0x2660 [ 24.388047] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.388563] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.389326] ? __pfx_lock_acquire+0x10/0x10 [ 24.389860] ? __pfx_mmap_region+0x10/0x10 [ 24.390449] ? security_mmap_addr+0x7d/0xa0 [ 24.390984] ? get_unmapped_area+0x1f5/0x3f0 [ 24.391533] do_mmap+0x854/0xf00 [ 24.391971] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.392462] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.393030] ksys_mmap_pgoff+0x3af/0x500 [ 24.393539] do_syscall_64+0x3f/0x90 [ 24.394047] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.394717] RIP: 0033:0x7f3035fa3d82 [ 24.395189] 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 [ 24.397389] RSP: 002b:00007ffed6f0d918 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.398326] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3035fa3d82 [ 24.399232] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f30353dd000 [ 24.400120] RBP: 00007f30353dd000 R08: 0000000000000009 R09: 0000000000001000 [ 24.400996] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ca1dab7ec0 [ 24.401892] R13: 00007ffed6f0d930 R14: 00007ffed6f0d960 R15: 00007ffed6f0dcc0 [ 24.402770] [ 24.403068] [ 24.403282] Allocated by task 213: [ 24.403708] kasan_save_stack+0x22/0x50 [ 24.404231] kasan_set_track+0x25/0x30 [ 24.404740] __kasan_slab_alloc+0x59/0x70 [ 24.405279] kmem_cache_alloc+0x16b/0x370 [ 24.405796] vm_area_dup+0x20/0x160 [ 24.406273] __split_vma+0x170/0x950 [ 24.406741] split_vma+0xc6/0x110 [ 24.407181] mprotect_fixup+0x8d2/0xb30 [ 24.407686] do_mprotect_pkey+0x87e/0xd40 [ 24.408216] __x64_sys_mprotect+0x78/0xc0 [ 24.408738] do_syscall_64+0x3f/0x90 [ 24.409218] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.409865] [ 24.410087] Freed by task 213: [ 24.410477] kasan_save_stack+0x22/0x50 [ 24.410977] kasan_set_track+0x25/0x30 [ 24.411475] kasan_save_free_info+0x2b/0x50 [ 24.412028] __kasan_slab_free+0x10a/0x190 [ 24.412580] kmem_cache_free+0x10d/0x4d0 [ 24.413084] rcu_core+0x8c8/0x2860 [ 24.413525] __do_softirq+0x1b7/0x7d4 [ 24.414012] [ 24.414226] Last potentially related work creation: [ 24.414886] kasan_save_stack+0x22/0x50 [ 24.415391] __kasan_record_aux_stack+0x8e/0xa0 [ 24.415965] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.416602] remove_vma+0x139/0x170 [ 24.417048] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.417604] do_vmi_munmap+0x1f1/0x2b0 [ 24.418102] __vm_munmap+0x138/0x3a0 [ 24.418592] __x64_sys_munmap+0x59/0x80 [ 24.419113] do_syscall_64+0x3f/0x90 [ 24.419565] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.420175] [ 24.420383] Second to last potentially related work creation: [ 24.421033] kasan_save_stack+0x22/0x50 [ 24.421516] __kasan_record_aux_stack+0x8e/0xa0 [ 24.422084] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.422694] remove_vma+0x139/0x170 [ 24.423148] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.423715] do_vmi_munmap+0x1f1/0x2b0 [ 24.424202] mmap_region+0x1f9/0x2660 [ 24.424680] do_mmap+0x854/0xf00 [ 24.425120] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.425628] ksys_mmap_pgoff+0x3af/0x500 [ 24.426155] do_syscall_64+0x3f/0x90 [ 24.426636] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.427305] [ 24.427522] The buggy address belongs to the object at ffff88800e225e80 [ 24.427522] which belongs to the cache vm_area_struct of size 168 [ 24.429016] The buggy address is located 88 bytes inside of [ 24.429016] freed 168-byte region [ffff88800e225e80, ffff88800e225f28) [ 24.430552] [ 24.430770] The buggy address belongs to the physical page: [ 24.431442] page:0000000051580cb8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe225 [ 24.432538] memcg:ffff88800df6db01 [ 24.432966] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.433625] page_type: 0xffffffff() [ 24.434109] raw: 0100000000000200 ffff88800879fc80 ffffea0000690580 dead000000000008 [ 24.435038] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800df6db01 [ 24.435993] page dumped because: kasan: bad access detected [ 24.436679] [ 24.436899] Memory state around the buggy address: [ 24.437498] ffff88800e225d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 24.438360] ffff88800e225e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 24.439215] >ffff88800e225e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.440075] ^ [ 24.440820] ffff88800e225f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 24.441687] ffff88800e225f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.442600] ================================================================== [ 24.443548] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.539205] BUG: Bad rss-counter state mm:000000004069c62d type:MM_FILEPAGES val:33 [ 26.540370] BUG: Bad rss-counter state mm:000000004069c62d type:MM_ANONPAGES val:22 [ 26.957440] BUG: Bad rss-counter state mm:0000000017e39385 type:MM_FILEPAGES val:33 [ 26.958525] BUG: Bad rss-counter state mm:0000000017e39385 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13770' (ECDSA) to the list of known hosts. 2023/06/19 18:17:45 fuzzer started 2023/06/19 18:17:45 dialing manager at localhost:44161 2023/06/19 18:17:45 checking machine... 2023/06/19 18:17:45 checking revisions... [ 27.716625] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:17:45 testing simple program... [ 27.762503] cgroup: Unknown subsys name 'net' [ 27.803643] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:17:44 Registers: info registers vcpu 0 RAX=0000000080010001 RBX=000000000000c9a2 RCX=0000000080010001 RDX=ffff88800feb8000 RSI=ffffffff813bddca RDI=0000000000000005 RBP=ffff88806ce2b9c0 RSP=ffff88806ce09cc8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000001 R12=0000000000000000 R13=ffff88806ce3a100 R14=dffffc0000000000 R15=ffff88806ce395c0 RIP=ffffffff814c07f1 RFL=00000046 [---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 00007f15d1c07900 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=00007f15d21bc650 CR3=000000000f546000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007f28d50ea380 CR3=000000000c714000 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=d9da35212646dbbaa44d91eb3ee1b13a XMM02=ec2efd57dc4c00df000000000011dc08 XMM03=e68757dcedcaf612000000000011dcd8 XMM04=49ef50c031360f8700000000000ae988 XMM05=19e9129bd510f2350000000000134de8 XMM06=f726961d2b9678330000000000133fc0 XMM07=e042d86d42eb936e0000000000124200 XMM08=e68757dcedcaf612000000000011dcd8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000