[ 32.731453] BUG: Bad rss-counter state mm:000000003d0410b1 type:MM_FILEPAGES val:33 [ 32.732443] BUG: Bad rss-counter state mm:000000003d0410b1 type:MM_ANONPAGES val:22 [ 32.893161] ================================================================== [ 32.894063] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.895005] Read of size 8 at addr ffff8880164da228 by task sshd/219 [ 32.895769] [ 32.895986] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.897019] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.898011] Call Trace: [ 32.898333] [ 32.898659] dump_stack_lvl+0x91/0xf0 [ 32.899157] print_report+0xcc/0x620 [ 32.899644] ? __virt_addr_valid+0x102/0x340 [ 32.900201] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.900824] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.901444] kasan_report+0xbe/0xf0 [ 32.901920] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.902544] vma_interval_tree_remove+0xc75/0xec0 [ 32.903180] vma_prepare+0xc54/0x11a0 [ 32.903671] __split_vma+0x5af/0x950 [ 32.904144] ? __pfx___split_vma+0x10/0x10 [ 32.904674] ? find_held_lock+0x2c/0x110 [ 32.905203] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.905781] ? lock_is_held_type+0x9f/0x120 [ 32.906332] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.906988] ? mtree_range_walk+0x632/0x900 [ 32.907550] ? mas_walk+0x5c7/0x7c0 [ 32.908035] do_vmi_munmap+0x1f1/0x2b0 [ 32.908537] mmap_region+0x1f9/0x2660 [ 32.909036] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.909563] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.910296] ? __pfx_lock_acquire+0x10/0x10 [ 32.910854] ? __pfx_mmap_region+0x10/0x10 [ 32.911397] ? security_mmap_addr+0x7d/0xa0 [ 32.911945] ? get_unmapped_area+0x1f5/0x3f0 [ 32.912505] do_mmap+0x854/0xf00 [ 32.912950] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.913467] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.914046] ksys_mmap_pgoff+0x3af/0x500 [ 32.914559] do_syscall_64+0x3f/0x90 [ 32.915056] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.915723] RIP: 0033:0x7f1f09e9dd82 [ 32.916189] 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 [ 32.918364] RSP: 002b:00007ffd6ff671d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.919307] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1f09e9dd82 [ 32.920172] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1f092d7000 [ 32.921033] RBP: 00007f1f092d7000 R08: 0000000000000009 R09: 0000000000001000 [ 32.921904] R10: 0000000000000812 R11: 0000000000000206 R12: 00005618ebbf0f70 [ 32.922788] R13: 00007ffd6ff671f0 R14: 00007ffd6ff67220 R15: 00007ffd6ff67580 [ 32.923667] [ 32.923971] [ 32.924193] Allocated by task 212: [ 32.924633] kasan_save_stack+0x22/0x50 [ 32.925149] kasan_set_track+0x25/0x30 [ 32.925654] __kasan_slab_alloc+0x59/0x70 [ 32.926193] kmem_cache_alloc+0x16b/0x370 [ 32.926725] vm_area_dup+0x20/0x160 [ 32.927187] __split_vma+0x170/0x950 [ 32.927663] split_vma+0xc6/0x110 [ 32.928110] mprotect_fixup+0x8d2/0xb30 [ 32.928623] do_mprotect_pkey+0x87e/0xd40 [ 32.929152] __x64_sys_mprotect+0x78/0xc0 [ 32.929686] do_syscall_64+0x3f/0x90 [ 32.930170] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.930841] [ 32.931057] Freed by task 19: [ 32.931455] kasan_save_stack+0x22/0x50 [ 32.931978] kasan_set_track+0x25/0x30 [ 32.932476] kasan_save_free_info+0x2b/0x50 [ 32.933030] __kasan_slab_free+0x10a/0x190 [ 32.933571] kmem_cache_free+0x10d/0x4d0 [ 32.934091] rcu_core+0x8c8/0x2860 [ 32.934543] __do_softirq+0x1b7/0x7d4 [ 32.935039] [ 32.935259] Last potentially related work creation: [ 32.935857] kasan_save_stack+0x22/0x50 [ 32.936367] __kasan_record_aux_stack+0x8e/0xa0 [ 32.936959] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.937697] remove_vma+0x139/0x170 [ 32.938161] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.938754] do_vmi_munmap+0x1f1/0x2b0 [ 32.939255] __vm_munmap+0x138/0x3a0 [ 32.939730] __x64_sys_munmap+0x59/0x80 [ 32.940247] do_syscall_64+0x3f/0x90 [ 32.940727] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.941383] [ 32.941606] Second to last potentially related work creation: [ 32.942312] kasan_save_stack+0x22/0x50 [ 32.942840] __kasan_record_aux_stack+0x8e/0xa0 [ 32.943426] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.944079] remove_vma+0x139/0x170 [ 32.944536] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.945112] do_vmi_munmap+0x1f1/0x2b0 [ 32.945607] __vm_munmap+0x138/0x3a0 [ 32.946083] __x64_sys_munmap+0x59/0x80 [ 32.946595] do_syscall_64+0x3f/0x90 [ 32.947075] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.947740] [ 32.947961] The buggy address belongs to the object at ffff8880164da1d0 [ 32.947961] which belongs to the cache vm_area_struct of size 168 [ 32.949472] The buggy address is located 88 bytes inside of [ 32.949472] freed 168-byte region [ffff8880164da1d0, ffff8880164da278) [ 32.950945] [ 32.951172] The buggy address belongs to the physical page: [ 32.951842] page:00000000c8947046 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x164da [ 32.952971] memcg:ffff8880164db001 [ 32.953413] flags: 0x100000000000200(slab|node=0|zone=1) [ 32.954071] page_type: 0xffffffff() [ 32.954531] raw: 0100000000000200 ffff88800879fc80 ffffea0000330240 dead000000000004 [ 32.955482] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880164db001 [ 32.956427] page dumped because: kasan: bad access detected [ 32.957111] [ 32.957326] Memory state around the buggy address: [ 32.957919] ffff8880164da100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.958834] ffff8880164da180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 32.959713] >ffff8880164da200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 32.960590] ^ [ 32.961173] ffff8880164da280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 32.962050] ffff8880164da300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 32.962943] ================================================================== [ 32.963973] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.910381] BUG: Bad rss-counter state mm:0000000034d446c2 type:MM_FILEPAGES val:33 [ 34.910992] BUG: Bad rss-counter state mm:0000000034d446c2 type:MM_ANONPAGES val:22 [ 35.366979] BUG: Bad rss-counter state mm:000000007fd4cebf type:MM_FILEPAGES val:33 [ 35.368205] BUG: Bad rss-counter state mm:000000007fd4cebf type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:53329' (ECDSA) to the list of known hosts. 2023/06/19 13:02:19 fuzzer started 2023/06/19 13:02:20 dialing manager at localhost:44161 2023/06/19 13:02:20 checking machine... 2023/06/19 13:02:20 checking revisions... [ 36.099492] kmemleak: Automatic memory scanning thread ended 2023/06/19 13:02:20 testing simple program... [ 36.154064] cgroup: Unknown subsys name 'net' [ 36.215372] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:02:10 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=ffff88800ffeb680 RCX=0000000080000000 RDX=0000000000000000 RSI=ffffffff81704bf2 RDI=ffffffff85d3bed0 RBP=ffffffff849f03c0 RSP=ffff888016767c80 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000000 R12=000000000000000e R13=ffff888016767e10 R14=000000000000000c R15=0000000000000000 RIP=ffffffff814c07f1 RFL=00000286 [--S--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 00007fa9e193b900 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=00007fa9e1ef2618 CR3=000000000ef6e000 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=0000000000000000 RBX=ffff88806cf09b30 RCX=ffff88806cf0a000 RDX=1ffff1100d9e1353 RSI=0000000000000002 RDI=ffff88806cf09a48 RBP=ffff888008d751c0 RSP=ffff88806cf09a48 R8 =0000000000000000 R9 =0000000000000000 R10=ffff88806cf09a98 R11=0000000000000000 R12=ffff88806cf09ab8 R13=ffff88806cf09ac0 R14=ffff88806cf09ae0 R15=ffff88806cf09a98 RIP=ffffffff81132f33 RFL=00000216 [----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 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=00007faed0ab2040 CR3=000000000c6c0000 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=5e36f4656d915e9a4d429031921c26af XMM02=ec2efd57dc4c00df000000000011cb88 XMM03=ae05c568eb971edd000000000011cc58 XMM04=13589f740f0a089b00000000000ae988 XMM05=dfcdbad4f1609c3700000000001343b8 XMM06=1b337359cb627ddb0000000000133590 XMM07=e042d86d42eb936e0000000000123d58 XMM08=ae05c568eb971edd000000000011cc58 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000