[ 31.206289] BUG: Bad rss-counter state mm:00000000de931a11 type:MM_FILEPAGES val:33 [ 31.208221] BUG: Bad rss-counter state mm:00000000de931a11 type:MM_ANONPAGES val:22 [ 31.369541] ================================================================== [ 31.370440] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.371366] Read of size 8 at addr ffff88800dc0bd08 by task sshd/220 [ 31.372143] [ 31.372360] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.373341] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.374308] Call Trace: [ 31.374625] [ 31.374917] dump_stack_lvl+0x91/0xf0 [ 31.375406] print_report+0xcc/0x620 [ 31.375894] ? __virt_addr_valid+0x102/0x340 [ 31.376461] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.377079] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.377695] kasan_report+0xbe/0xf0 [ 31.378171] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.378794] vma_interval_tree_remove+0xc75/0xec0 [ 31.379397] vma_prepare+0xc54/0x11a0 [ 31.379881] __split_vma+0x5af/0x950 [ 31.380359] ? __pfx___split_vma+0x10/0x10 [ 31.380883] ? find_held_lock+0x2c/0x110 [ 31.381401] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.381965] ? lock_is_held_type+0x9f/0x120 [ 31.382496] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.383108] ? mtree_range_walk+0x632/0x900 [ 31.383660] ? mas_walk+0x5c7/0x7c0 [ 31.384142] do_vmi_munmap+0x1f1/0x2b0 [ 31.384630] mmap_region+0x1f9/0x2660 [ 31.385110] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.385617] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.386324] ? __pfx_lock_acquire+0x10/0x10 [ 31.386852] ? __pfx_mmap_region+0x10/0x10 [ 31.387381] ? security_mmap_addr+0x7d/0xa0 [ 31.387913] ? get_unmapped_area+0x1f5/0x3f0 [ 31.388491] do_mmap+0x854/0xf00 [ 31.388933] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.389425] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.389991] ksys_mmap_pgoff+0x3af/0x500 [ 31.390494] do_syscall_64+0x3f/0x90 [ 31.390978] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.391622] RIP: 0033:0x7f4714030d82 [ 31.392084] 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 [ 31.394197] RSP: 002b:00007ffcc644c1d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.395100] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f4714030d82 [ 31.395940] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f471346a000 [ 31.396797] RBP: 00007f471346a000 R08: 0000000000000009 R09: 0000000000001000 [ 31.397644] R10: 0000000000000812 R11: 0000000000000206 R12: 00005652c2eeeec0 [ 31.398488] R13: 00007ffcc644c1f0 R14: 00007ffcc644c220 R15: 00007ffcc644c580 [ 31.399334] [ 31.399638] [ 31.399853] Allocated by task 213: [ 31.400299] kasan_save_stack+0x22/0x50 [ 31.400797] kasan_set_track+0x25/0x30 [ 31.401288] __kasan_slab_alloc+0x59/0x70 [ 31.401804] kmem_cache_alloc+0x16b/0x370 [ 31.402321] vm_area_dup+0x20/0x160 [ 31.402776] __split_vma+0x170/0x950 [ 31.403246] split_vma+0xc6/0x110 [ 31.403684] mprotect_fixup+0x8d2/0xb30 [ 31.404195] do_mprotect_pkey+0x87e/0xd40 [ 31.404720] __x64_sys_mprotect+0x78/0xc0 [ 31.405244] do_syscall_64+0x3f/0x90 [ 31.405724] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.406373] [ 31.406588] Freed by task 213: [ 31.406980] kasan_save_stack+0x22/0x50 [ 31.407490] kasan_set_track+0x25/0x30 [ 31.407994] kasan_save_free_info+0x2b/0x50 [ 31.408528] __kasan_slab_free+0x10a/0x190 [ 31.409064] kmem_cache_free+0x10d/0x4d0 [ 31.409571] rcu_core+0x8c8/0x2860 [ 31.410010] __do_softirq+0x1b7/0x7d4 [ 31.410486] [ 31.410702] Last potentially related work creation: [ 31.411281] kasan_save_stack+0x22/0x50 [ 31.411781] __kasan_record_aux_stack+0x8e/0xa0 [ 31.412365] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.413003] remove_vma+0x139/0x170 [ 31.413450] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.414044] do_vmi_munmap+0x1f1/0x2b0 [ 31.414525] __vm_munmap+0x138/0x3a0 [ 31.415001] __x64_sys_munmap+0x59/0x80 [ 31.415493] do_syscall_64+0x3f/0x90 [ 31.415978] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.416616] [ 31.416833] Second to last potentially related work creation: [ 31.417523] kasan_save_stack+0x22/0x50 [ 31.418023] __kasan_record_aux_stack+0x8e/0xa0 [ 31.418596] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.419238] remove_vma+0x139/0x170 [ 31.419690] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.420266] do_vmi_munmap+0x1f1/0x2b0 [ 31.420754] mmap_region+0x1f9/0x2660 [ 31.421232] do_mmap+0x854/0xf00 [ 31.421660] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.422145] ksys_mmap_pgoff+0x3af/0x500 [ 31.422647] do_syscall_64+0x3f/0x90 [ 31.423122] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.423763] [ 31.423982] The buggy address belongs to the object at ffff88800dc0bcb0 [ 31.423982] which belongs to the cache vm_area_struct of size 168 [ 31.425447] The buggy address is located 88 bytes inside of [ 31.425447] freed 168-byte region [ffff88800dc0bcb0, ffff88800dc0bd58) [ 31.426846] [ 31.427059] The buggy address belongs to the physical page: [ 31.427715] page:00000000bbf7df6e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdc0b [ 31.428816] memcg:ffff88800d990201 [ 31.429250] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.429895] page_type: 0xffffffff() [ 31.430347] raw: 0100000000000200 ffff8880087a0c80 ffffea0000315340 dead000000000004 [ 31.431268] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d990201 [ 31.432187] page dumped because: kasan: bad access detected [ 31.432850] [ 31.433069] Memory state around the buggy address: [ 31.433647] ffff88800dc0bc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.434504] ffff88800dc0bc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 31.435359] >ffff88800dc0bd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 31.436225] ^ [ 31.436672] ffff88800dc0bd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 31.437547] ffff88800dc0be00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.438413] ================================================================== [ 31.439339] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.189661] BUG: Bad rss-counter state mm:000000003b25eb0e type:MM_FILEPAGES val:33 [ 34.191086] BUG: Bad rss-counter state mm:000000003b25eb0e type:MM_ANONPAGES val:22 [ 34.701628] BUG: Bad rss-counter state mm:00000000445aa0d5 type:MM_FILEPAGES val:33 [ 34.702790] BUG: Bad rss-counter state mm:00000000445aa0d5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:38872' (ECDSA) to the list of known hosts. 2023/06/20 19:29:57 fuzzer started 2023/06/20 19:29:58 dialing manager at localhost:36067 2023/06/20 19:29:58 checking machine... 2023/06/20 19:29:58 checking revisions... [ 35.370518] kmemleak: Automatic memory scanning thread ended 2023/06/20 19:29:58 testing simple program... [ 35.431567] cgroup: Unknown subsys name 'net' [ 35.503328] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:29:57 Registers: info registers vcpu 0 RAX=ffff88800f088001 RBX=ffff88800f087c50 RCX=0000000000000001 RDX=ffff88800f087c58 RSI=ffff88800f087c38 RDI=ffff88800f087880 RBP=ffff88800f080000 RSP=ffff88800f087800 R8 =0000000000000001 R9 =ffff88800f0878b0 R10=0000000000038001 R11=0000000000038c51 R12=ffff88800f0878d0 R13=ffff88800f0878b8 R14=ffff88800f087c38 R15=ffff88800f087870 RIP=ffffffff81131cda 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 00007f8e54d7e900 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=00007ffc863a0000 CR3=000000001befe000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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=00007f9cad4da740 CR3=000000000ca1e000 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=86dc47533210dca1f343bc2f0c602833 XMM02=ec2efd57dc4c00df000000000011bdf0 XMM03=d44cfda946131219000000000011bec0 XMM04=c252a9116a97edbb00000000000ae988 XMM05=19e9129bd510f2350000000000132f68 XMM06=7c85f2f72cccef950000000000132140 XMM07=e042d86d42eb936e0000000000122360 XMM08=d44cfda946131219000000000011bec0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000