[ 26.271193] BUG: Bad rss-counter state mm:00000000a9056774 type:MM_FILEPAGES val:33 [ 26.273083] BUG: Bad rss-counter state mm:00000000a9056774 type:MM_ANONPAGES val:22 [ 26.441694] ================================================================== [ 26.442796] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 26.443950] Read of size 8 at addr ffff888014581880 by task sshd/219 [ 26.445004] [ 26.445238] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 26.446085] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.447068] Call Trace: [ 26.447381] [ 26.447659] dump_stack_lvl+0x91/0xf0 [ 26.448148] print_report+0xcc/0x620 [ 26.448640] ? __virt_addr_valid+0x102/0x340 [ 26.449188] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.449793] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.450404] kasan_report+0xbe/0xf0 [ 26.450873] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.451486] vma_interval_tree_remove+0xc75/0xec0 [ 26.452081] vma_prepare+0xc54/0x11a0 [ 26.452560] __split_vma+0x5af/0x950 [ 26.453052] ? __pfx___split_vma+0x10/0x10 [ 26.453582] ? find_held_lock+0x2c/0x110 [ 26.454096] do_vmi_align_munmap+0x2ba/0x11f0 [ 26.454659] ? lock_is_held_type+0x9f/0x120 [ 26.455218] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.455835] ? mtree_range_walk+0x632/0x900 [ 26.456395] ? mas_walk+0x5c7/0x7c0 [ 26.456887] do_vmi_munmap+0x1f1/0x2b0 [ 26.457388] mmap_region+0x1f9/0x2660 [ 26.457875] ? vm_mmap_pgoff+0x15c/0x3a0 [ 26.458398] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.459118] ? __pfx_lock_acquire+0x10/0x10 [ 26.459671] ? __pfx_mmap_region+0x10/0x10 [ 26.460208] ? security_mmap_addr+0x7d/0xa0 [ 26.460756] ? get_unmapped_area+0x1f5/0x3f0 [ 26.461309] do_mmap+0x854/0xf00 [ 26.461749] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.462251] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.462809] ksys_mmap_pgoff+0x3af/0x500 [ 26.463311] do_syscall_64+0x3f/0x90 [ 26.463790] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.464443] RIP: 0033:0x7fdce88b2d82 [ 26.464929] 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 [ 26.467049] RSP: 002b:00007fffc0ae7298 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.467954] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fdce88b2d82 [ 26.468814] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fdce7cec000 [ 26.469656] RBP: 00007fdce7cec000 R08: 0000000000000009 R09: 0000000000001000 [ 26.470497] R10: 0000000000000812 R11: 0000000000000206 R12: 000056018fe28980 [ 26.471370] R13: 00007fffc0ae72b0 R14: 00007fffc0ae72e0 R15: 00007fffc0ae7640 [ 26.472239] [ 26.472529] [ 26.472761] Allocated by task 212: [ 26.473188] kasan_save_stack+0x22/0x50 [ 26.473692] kasan_set_track+0x25/0x30 [ 26.474186] __kasan_slab_alloc+0x59/0x70 [ 26.474712] kmem_cache_alloc+0x16b/0x370 [ 26.475233] vm_area_dup+0x20/0x160 [ 26.475690] __split_vma+0x170/0x950 [ 26.476160] split_vma+0xc6/0x110 [ 26.476612] mprotect_fixup+0x8d2/0xb30 [ 26.477111] do_mprotect_pkey+0x87e/0xd40 [ 26.477633] __x64_sys_mprotect+0x78/0xc0 [ 26.478154] do_syscall_64+0x3f/0x90 [ 26.478623] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.479265] [ 26.479489] Freed by task 212: [ 26.479878] kasan_save_stack+0x22/0x50 [ 26.480386] kasan_set_track+0x25/0x30 [ 26.480902] kasan_save_free_info+0x2b/0x50 [ 26.481441] __kasan_slab_free+0x10a/0x190 [ 26.481967] kmem_cache_free+0x10d/0x4d0 [ 26.482476] rcu_core+0x8c8/0x2860 [ 26.482924] __do_softirq+0x1b7/0x7d4 [ 26.483402] [ 26.483615] Last potentially related work creation: [ 26.484198] kasan_save_stack+0x22/0x50 [ 26.484710] __kasan_record_aux_stack+0x8e/0xa0 [ 26.485289] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.486008] remove_vma+0x139/0x170 [ 26.486460] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.487014] do_vmi_munmap+0x1f1/0x2b0 [ 26.487498] __vm_munmap+0x138/0x3a0 [ 26.487965] __x64_sys_munmap+0x59/0x80 [ 26.488465] do_syscall_64+0x3f/0x90 [ 26.488947] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.489596] [ 26.489810] The buggy address belongs to the object at ffff888014581828 [ 26.489810] which belongs to the cache vm_area_struct of size 168 [ 26.491277] The buggy address is located 88 bytes inside of [ 26.491277] freed 168-byte region [ffff888014581828, ffff8880145818d0) [ 26.492686] [ 26.492903] The buggy address belongs to the physical page: [ 26.493563] page:000000008c36c1ea refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14581 [ 26.494669] memcg:ffff88800da02101 [ 26.495095] flags: 0x100000000000200(slab|node=0|zone=1) [ 26.495742] page_type: 0xffffffff() [ 26.496198] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 26.497134] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800da02101 [ 26.498037] page dumped because: kasan: bad access detected [ 26.498700] [ 26.498920] Memory state around the buggy address: [ 26.499498] ffff888014581780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 26.500355] ffff888014581800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 26.501218] >ffff888014581880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 26.502071] ^ [ 26.502482] ffff888014581900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 26.503333] ffff888014581980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc 00 [ 26.504176] ================================================================== [ 26.505212] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 29.330085] BUG: Bad rss-counter state mm:0000000048b96ccf type:MM_FILEPAGES val:33 [ 29.331284] BUG: Bad rss-counter state mm:0000000048b96ccf type:MM_ANONPAGES val:22 [ 29.839147] BUG: Bad rss-counter state mm:00000000bab5f6b7 type:MM_FILEPAGES val:33 [ 29.840921] BUG: Bad rss-counter state mm:00000000bab5f6b7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:1727' (ECDSA) to the list of known hosts. 2023/06/20 04:57:57 fuzzer started 2023/06/20 04:57:57 dialing manager at localhost:44161 2023/06/20 04:57:57 checking machine... 2023/06/20 04:57:57 checking revisions... [ 30.603790] kmemleak: Automatic memory scanning thread ended 2023/06/20 04:57:57 testing simple program... [ 30.651468] cgroup: Unknown subsys name 'net' [ 30.700815] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:57:54 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88806ce09b60 RCX=ffffffff8609fb01 RDX=0000000000000000 RSI=ffffffff8450b05e RDI=ffff88806ce09b6c RBP=0000000000000008 RSP=ffff88806ce09a78 R8 =ffffffff8609fb08 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=000000000000792d R12=ffff88806ce09b60 R13=0000000000000000 R14=ffffffff8542a6c0 R15=ffff88800e132ec0 RIP=ffffffff813ad49e RFL=00000213 [----A-C] 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 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=00007f2ef52b1000 CR3=000000000d91a000 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=bdbec17b76eb31ac0444c12b591de026 XMM02=000000000011d950eff9b2d0a8fce9cb XMM03=000000000011da202c67c8bc2e329bc3 XMM04=38f387be56628da600000000000ae988 XMM05=dfcdbad4f1609c370000000000133790 XMM06=b29c9b5746665fec0000000000132968 XMM07=e042d86d42eb936e0000000000123f80 XMM08=bf4056e5b5ef6c29000000000011da20 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff8880199af1f0 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff8880199af101 RSI=ffff8880199af128 RDI=ffff8880199af128 RBP=ffff8880199af1b0 RSP=ffff8880199af098 R8 =0000000000000001 R9 =ffff8880199af198 R10=0000000000038001 R11=0000000000006097 R12=ffff8880199af1b8 R13=ffff8880199af1a0 R14=ffff8880199af128 R15=ffff8880199af158 RIP=ffffffff81131236 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 00007f937b528900 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=00007f937b507020 CR3=00000000101d6000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000