[ 31.417960] BUG: Bad rss-counter state mm:000000005bb34a87 type:MM_FILEPAGES val:33 [ 31.419194] BUG: Bad rss-counter state mm:000000005bb34a87 type:MM_ANONPAGES val:22 [ 31.586974] ================================================================== [ 31.587897] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.588851] Read of size 8 at addr ffff88800e46dd08 by task sshd/221 [ 31.589761] [ 31.589983] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.590868] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.591877] Call Trace: [ 31.592204] [ 31.592487] dump_stack_lvl+0x91/0xf0 [ 31.592990] print_report+0xcc/0x620 [ 31.593492] ? __virt_addr_valid+0x102/0x340 [ 31.594069] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.594691] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.595337] kasan_report+0xbe/0xf0 [ 31.595816] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.596430] vma_interval_tree_remove+0xc75/0xec0 [ 31.597030] vma_prepare+0xc54/0x11a0 [ 31.597507] __split_vma+0x5af/0x950 [ 31.597982] ? __pfx___split_vma+0x10/0x10 [ 31.598508] ? find_held_lock+0x2c/0x110 [ 31.599055] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.599617] ? lock_is_held_type+0x9f/0x120 [ 31.600159] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.600761] ? mtree_range_walk+0x632/0x900 [ 31.601320] ? mas_walk+0x5c7/0x7c0 [ 31.601800] do_vmi_munmap+0x1f1/0x2b0 [ 31.602291] mmap_region+0x1f9/0x2660 [ 31.602791] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.603300] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.604012] ? __pfx_lock_acquire+0x10/0x10 [ 31.604542] ? __pfx_mmap_region+0x10/0x10 [ 31.605069] ? security_mmap_addr+0x7d/0xa0 [ 31.605597] ? get_unmapped_area+0x1f5/0x3f0 [ 31.606141] do_mmap+0x854/0xf00 [ 31.606584] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.607088] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.607656] ksys_mmap_pgoff+0x3af/0x500 [ 31.608161] do_syscall_64+0x3f/0x90 [ 31.608641] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.609283] RIP: 0033:0x7f3e4769fd82 [ 31.609741] 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 [ 31.611868] RSP: 002b:00007ffe9456c718 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.612782] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3e4769fd82 [ 31.613618] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3e46ad9000 [ 31.614468] RBP: 00007f3e46ad9000 R08: 0000000000000009 R09: 0000000000001000 [ 31.615324] R10: 0000000000000812 R11: 0000000000000206 R12: 000056198a03db20 [ 31.616164] R13: 00007ffe9456c730 R14: 00007ffe9456c760 R15: 00007ffe9456cac0 [ 31.617023] [ 31.617318] [ 31.617537] Allocated by task 213: [ 31.617961] kasan_save_stack+0x22/0x50 [ 31.618462] kasan_set_track+0x25/0x30 [ 31.618973] __kasan_slab_alloc+0x59/0x70 [ 31.619499] kmem_cache_alloc+0x16b/0x370 [ 31.620020] vm_area_dup+0x20/0x160 [ 31.620472] __split_vma+0x170/0x950 [ 31.620939] split_vma+0xc6/0x110 [ 31.621385] mprotect_fixup+0x8d2/0xb30 [ 31.621894] do_mprotect_pkey+0x87e/0xd40 [ 31.622418] __x64_sys_mprotect+0x78/0xc0 [ 31.622957] do_syscall_64+0x3f/0x90 [ 31.623436] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.624076] [ 31.624292] Freed by task 205: [ 31.624694] kasan_save_stack+0x22/0x50 [ 31.625202] kasan_set_track+0x25/0x30 [ 31.625691] kasan_save_free_info+0x2b/0x50 [ 31.626218] __kasan_slab_free+0x10a/0x190 [ 31.626756] kmem_cache_free+0x10d/0x4d0 [ 31.627261] rcu_core+0x8c8/0x2860 [ 31.627702] __do_softirq+0x1b7/0x7d4 [ 31.628176] [ 31.628392] Last potentially related work creation: [ 31.628971] kasan_save_stack+0x22/0x50 [ 31.629476] __kasan_record_aux_stack+0x8e/0xa0 [ 31.630049] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.630692] remove_vma+0x139/0x170 [ 31.631166] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.631723] do_vmi_munmap+0x1f1/0x2b0 [ 31.632210] __vm_munmap+0x138/0x3a0 [ 31.632686] __x64_sys_munmap+0x59/0x80 [ 31.633194] do_syscall_64+0x3f/0x90 [ 31.633670] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.634312] [ 31.634534] The buggy address belongs to the object at ffff88800e46dcb0 [ 31.634534] which belongs to the cache vm_area_struct of size 168 [ 31.636038] The buggy address is located 88 bytes inside of [ 31.636038] freed 168-byte region [ffff88800e46dcb0, ffff88800e46dd58) [ 31.637472] [ 31.637693] The buggy address belongs to the physical page: [ 31.638364] page:000000006fc09092 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe46d [ 31.639482] memcg:ffff88800dcb1601 [ 31.639913] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.640562] page_type: 0xffffffff() [ 31.641017] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 31.641938] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dcb1601 [ 31.642861] page dumped because: kasan: bad access detected [ 31.643528] [ 31.643748] Memory state around the buggy address: [ 31.644341] ffff88800e46dc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.645199] ffff88800e46dc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 31.646065] >ffff88800e46dd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 31.646932] ^ [ 31.647373] ffff88800e46dd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 31.648245] ffff88800e46de00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.649105] ================================================================== [ 31.650411] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.596428] BUG: Bad rss-counter state mm:00000000f636df9d type:MM_FILEPAGES val:33 [ 33.597879] BUG: Bad rss-counter state mm:00000000f636df9d type:MM_ANONPAGES val:22 [ 33.999513] BUG: Bad rss-counter state mm:0000000085e00c3a type:MM_FILEPAGES val:33 [ 34.000990] BUG: Bad rss-counter state mm:0000000085e00c3a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:9656' (ECDSA) to the list of known hosts. 2023/06/21 03:15:00 fuzzer started 2023/06/21 03:15:01 dialing manager at localhost:36067 2023/06/21 03:15:01 checking machine... 2023/06/21 03:15:01 checking revisions... [ 34.705212] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:15:01 testing simple program... [ 34.755915] cgroup: Unknown subsys name 'net' [ 34.791510] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:15:00 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88801637edc8 RCX=0000000000000002 RDX=ffffffff87f34700 RSI=ffffffff84905360 RDI=ffff88801637edc8 RBP=ffff888008f7a000 RSP=ffff88801024fd28 R8 =000000004b4e494c R9 =000000000000001f R10=0000000000000007 R11=00000000000b6a61 R12=ffff88801637ed38 R13=ffff88801637ed98 R14=ffff88801637ed40 R15=ffff88801637eda8 RIP=ffffffff812dfbc4 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 00007f0c107f6900 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=00007f0c10dad618 CR3=0000000016aca000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff110012db4f7 RBX=ffff8880096da788 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff8880096da7b8 RBP=ffff88800964c1d0 RSP=ffff88806cf09db8 R8 =0000000000000001 R9 =ffffed100d9e13ab R10=0000000000000003 R11=0000000000000000 R12=dffffc0000000000 R13=ffff8880096fd900 R14=ffffffff8186b835 R15=ffff888013d2d500 RIP=ffffffff818464e2 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 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=00007f1d3d53bf80 CR3=000000000c7de000 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=ec70e7dc41ee54b5a541ece340fa9735 XMM02=ec2efd57dc4c00df000000000011ca48 XMM03=c5b2770df8c281f8000000000011cb18 XMM04=95db1651cae866d400000000000ae988 XMM05=e4cb8bb95a7664b600000000001328c8 XMM06=3678b9681fb75bf30000000000131aa0 XMM07=e042d86d42eb936e0000000000122fb8 XMM08=c5b2770df8c281f8000000000011cb18 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000