[ 24.215269] BUG: Bad rss-counter state mm:00000000b90809d1 type:MM_FILEPAGES val:33 [ 24.216776] BUG: Bad rss-counter state mm:00000000b90809d1 type:MM_ANONPAGES val:22 [ 24.371989] ================================================================== [ 24.373115] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.374341] Read of size 8 at addr ffff88800e15ded8 by task sshd/218 [ 24.375061] [ 24.375268] CPU: 1 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.376082] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.377006] Call Trace: [ 24.377313] [ 24.377586] dump_stack_lvl+0x91/0xf0 [ 24.378062] print_report+0xcc/0x620 [ 24.378549] ? __virt_addr_valid+0x102/0x340 [ 24.379093] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.379704] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.380313] kasan_report+0xbe/0xf0 [ 24.380781] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.381419] vma_interval_tree_remove+0xc75/0xec0 [ 24.382008] vma_prepare+0xc54/0x11a0 [ 24.382480] __split_vma+0x5af/0x950 [ 24.382960] ? __pfx___split_vma+0x10/0x10 [ 24.383481] ? find_held_lock+0x2c/0x110 [ 24.383995] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.384561] ? lock_is_held_type+0x9f/0x120 [ 24.385126] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.385732] ? mtree_range_walk+0x632/0x900 [ 24.386279] ? mas_walk+0x5c7/0x7c0 [ 24.386739] do_vmi_munmap+0x1f1/0x2b0 [ 24.387227] mmap_region+0x1f9/0x2660 [ 24.387701] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.388212] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.388917] ? __pfx_lock_acquire+0x10/0x10 [ 24.389477] ? __pfx_mmap_region+0x10/0x10 [ 24.389996] ? security_mmap_addr+0x7d/0xa0 [ 24.390515] ? get_unmapped_area+0x1f5/0x3f0 [ 24.391070] do_mmap+0x854/0xf00 [ 24.391511] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.392009] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.392557] ksys_mmap_pgoff+0x3af/0x500 [ 24.393091] do_syscall_64+0x3f/0x90 [ 24.393566] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.394226] RIP: 0033:0x7fc46376ad82 [ 24.394688] 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 [ 24.396828] RSP: 002b:00007ffcef156cc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.397747] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc46376ad82 [ 24.398600] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc462ba4000 [ 24.399447] RBP: 00007fc462ba4000 R08: 0000000000000009 R09: 0000000000001000 [ 24.400304] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d6eb372ec0 [ 24.401176] R13: 00007ffcef156ce0 R14: 00007ffcef156d10 R15: 00007ffcef157070 [ 24.402050] [ 24.402346] [ 24.402560] Allocated by task 210: [ 24.402988] kasan_save_stack+0x22/0x50 [ 24.403488] kasan_set_track+0x25/0x30 [ 24.403983] __kasan_slab_alloc+0x59/0x70 [ 24.404504] kmem_cache_alloc+0x16b/0x370 [ 24.405026] vm_area_dup+0x20/0x160 [ 24.405476] __split_vma+0x170/0x950 [ 24.405947] split_vma+0xc6/0x110 [ 24.406382] mprotect_fixup+0x8d2/0xb30 [ 24.406880] do_mprotect_pkey+0x87e/0xd40 [ 24.407397] __x64_sys_mprotect+0x78/0xc0 [ 24.407915] do_syscall_64+0x3f/0x90 [ 24.408390] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.409043] [ 24.409258] Freed by task 210: [ 24.409645] kasan_save_stack+0x22/0x50 [ 24.410149] kasan_set_track+0x25/0x30 [ 24.410663] kasan_save_free_info+0x2b/0x50 [ 24.411239] __kasan_slab_free+0x10a/0x190 [ 24.411779] kmem_cache_free+0x10d/0x4d0 [ 24.412280] rcu_core+0x8c8/0x2860 [ 24.412716] __do_softirq+0x1b7/0x7d4 [ 24.413195] [ 24.413411] Last potentially related work creation: [ 24.413989] kasan_save_stack+0x22/0x50 [ 24.414569] __kasan_record_aux_stack+0x8e/0xa0 [ 24.415132] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.415772] remove_vma+0x139/0x170 [ 24.416216] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.416764] do_vmi_munmap+0x1f1/0x2b0 [ 24.417260] __vm_munmap+0x138/0x3a0 [ 24.417730] __x64_sys_munmap+0x59/0x80 [ 24.418219] do_syscall_64+0x3f/0x90 [ 24.418690] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.419386] [ 24.419615] Second to last potentially related work creation: [ 24.420351] kasan_save_stack+0x22/0x50 [ 24.420877] __kasan_record_aux_stack+0x8e/0xa0 [ 24.421478] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.422143] remove_vma+0x139/0x170 [ 24.422622] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.423210] do_vmi_munmap+0x1f1/0x2b0 [ 24.423714] mmap_region+0x1f9/0x2660 [ 24.424208] do_mmap+0x854/0xf00 [ 24.424653] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.425182] ksys_mmap_pgoff+0x3af/0x500 [ 24.425704] do_syscall_64+0x3f/0x90 [ 24.426199] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.426893] [ 24.427114] The buggy address belongs to the object at ffff88800e15de80 [ 24.427114] which belongs to the cache vm_area_struct of size 168 [ 24.428559] The buggy address is located 88 bytes inside of [ 24.428559] freed 168-byte region [ffff88800e15de80, ffff88800e15df28) [ 24.430030] [ 24.430255] The buggy address belongs to the physical page: [ 24.430937] page:00000000ea7791fb refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe15d [ 24.432050] memcg:ffff8880099dc101 [ 24.432487] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.433238] page_type: 0xffffffff() [ 24.433708] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 24.434657] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880099dc101 [ 24.435591] page dumped because: kasan: bad access detected [ 24.436276] [ 24.436502] Memory state around the buggy address: [ 24.437107] ffff88800e15dd80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.438030] ffff88800e15de00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 24.439141] >ffff88800e15de80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.440244] ^ [ 24.441202] ffff88800e15df00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 24.442313] ffff88800e15df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.443419] ================================================================== [ 24.444656] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.460443] BUG: Bad rss-counter state mm:00000000b777e4fa type:MM_FILEPAGES val:33 [ 26.461482] BUG: Bad rss-counter state mm:00000000b777e4fa type:MM_ANONPAGES val:22 [ 26.989930] BUG: Bad rss-counter state mm:0000000057d7a1d7 type:MM_FILEPAGES val:33 [ 26.991262] BUG: Bad rss-counter state mm:0000000057d7a1d7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:57361' (ECDSA) to the list of known hosts. 2023/06/21 03:15:13 fuzzer started 2023/06/21 03:15:13 dialing manager at localhost:36067 2023/06/21 03:15:13 checking machine... 2023/06/21 03:15:13 checking revisions... [ 27.738986] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:15:13 testing simple program... [ 27.797422] cgroup: Unknown subsys name 'net' [ 27.886725] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:15:12 Registers: info registers vcpu 0 RAX=ffff88800f36f488 RBX=ffff88800f370198 RCX=1ffff11001e6e03a RDX=dffffc0000000000 RSI=ffff88800f65a680 RDI=ffff88800f3701d0 RBP=ffff88800f3701a8 RSP=ffff88801c97fa38 R8 =0000000000000001 R9 =0000000000000246 R10=0000000000000003 R11=00000000000b6a61 R12=ffff88800f65a400 R13=0000000000000000 R14=ffff88801bca5508 R15=ffff88801bca54c0 RIP=ffffffff8184769c RFL=00000016 [----AP-] 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 00007fb0d721c900 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=00007fb0d77d3618 CR3=00000000167ce000 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=dffffc0000000000 RBX=ffff88806cf09a70 RCX=0000000000000001 RDX=1ffff1100d9e1359 RSI=ffff88806cf09dc8 RDI=ffffffff81370a8a RBP=ffff88806cf09ac8 RSP=ffff88806cf09a58 R8 =0000000000000001 R9 =ffff88806cf09ab0 R10=0000000000038001 R11=0000000000020ed2 R12=ffff88806cf09b38 R13=0000000000000000 R14=ffff888008d951c0 R15=ffff88800e491400 RIP=ffffffff811303b2 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 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=00007f9b24d60c50 CR3=000000000cac2000 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=de6303d0d91982b2b94860a3cc94a78e XMM02=ec2efd57dc4c00df000000000011a478 XMM03=60fdad0dfb346e91000000000011a548 XMM04=ebc427352b78fbf100000000000ae988 XMM05=751b9502027dc0b90000000000132108 XMM06=0ed222c435200c7500000000001308a8 XMM07=e042d86d42eb936e0000000000121208 XMM08=60fdad0dfb346e91000000000011a548 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000