[ 59.114169] BUG: Bad rss-counter state mm:0000000054f761eb type:MM_FILEPAGES val:33 [ 59.116302] BUG: Bad rss-counter state mm:0000000054f761eb type:MM_ANONPAGES val:22 [ 59.278016] ================================================================== [ 59.278870] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 59.279748] Read of size 8 at addr ffff88800e64eb38 by task sshd/219 [ 59.280461] [ 59.280673] CPU: 0 PID: 219 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 59.281753] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 59.282734] Call Trace: [ 59.283047] [ 59.283351] dump_stack_lvl+0x91/0xf0 [ 59.283822] print_report+0xcc/0x620 [ 59.284286] ? __virt_addr_valid+0x102/0x340 [ 59.284824] ? vma_interval_tree_remove+0xc75/0xec0 [ 59.285425] ? vma_interval_tree_remove+0xc75/0xec0 [ 59.286029] kasan_report+0xbe/0xf0 [ 59.286503] ? vma_interval_tree_remove+0xc75/0xec0 [ 59.287100] vma_interval_tree_remove+0xc75/0xec0 [ 59.287693] vma_prepare+0xc54/0x11a0 [ 59.288161] __split_vma+0x5af/0x950 [ 59.288623] ? __pfx___split_vma+0x10/0x10 [ 59.289143] ? find_held_lock+0x2c/0x110 [ 59.289654] do_vmi_align_munmap+0x2ba/0x11f0 [ 59.290211] ? lock_is_held_type+0x9f/0x120 [ 59.290736] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 59.291330] ? mtree_range_walk+0x632/0x900 [ 59.291870] ? mas_walk+0x5c7/0x7c0 [ 59.292342] do_vmi_munmap+0x1f1/0x2b0 [ 59.292826] mmap_region+0x1f9/0x2660 [ 59.293301] ? vm_mmap_pgoff+0x15c/0x3a0 [ 59.293807] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 59.294526] ? __pfx_lock_acquire+0x10/0x10 [ 59.295046] ? __pfx_mmap_region+0x10/0x10 [ 59.295563] ? security_mmap_addr+0x7d/0xa0 [ 59.296087] ? get_unmapped_area+0x1f5/0x3f0 [ 59.296625] do_mmap+0x854/0xf00 [ 59.297049] vm_mmap_pgoff+0x1a6/0x3a0 [ 59.297524] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 59.298083] ksys_mmap_pgoff+0x3af/0x500 [ 59.298584] do_syscall_64+0x3f/0x90 [ 59.299057] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 59.299692] RIP: 0033:0x7f1a71d4fd82 [ 59.300139] 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 [ 59.302201] RSP: 002b:00007ffe31bfcad8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 59.303086] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1a71d4fd82 [ 59.303921] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1a71189000 [ 59.304764] RBP: 00007f1a71189000 R08: 0000000000000009 R09: 0000000000001000 [ 59.305588] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d4cb87ff70 [ 59.306440] R13: 00007ffe31bfcaf0 R14: 00007ffe31bfcb20 R15: 00007ffe31bfce80 [ 59.307281] [ 59.307561] [ 59.307768] Allocated by task 212: [ 59.308188] kasan_save_stack+0x22/0x50 [ 59.308685] kasan_set_track+0x25/0x30 [ 59.309173] __kasan_slab_alloc+0x59/0x70 [ 59.309678] kmem_cache_alloc+0x16b/0x370 [ 59.310192] vm_area_dup+0x20/0x160 [ 59.310642] __split_vma+0x170/0x950 [ 59.311093] split_vma+0xc6/0x110 [ 59.311533] mprotect_fixup+0x8d2/0xb30 [ 59.312017] do_mprotect_pkey+0x87e/0xd40 [ 59.312528] __x64_sys_mprotect+0x78/0xc0 [ 59.313033] do_syscall_64+0x3f/0x90 [ 59.313507] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 59.314140] [ 59.314358] Freed by task 13: [ 59.314739] kasan_save_stack+0x22/0x50 [ 59.315232] kasan_set_track+0x25/0x30 [ 59.315719] kasan_save_free_info+0x2b/0x50 [ 59.316241] __kasan_slab_free+0x10a/0x190 [ 59.316767] kmem_cache_free+0x10d/0x4d0 [ 59.317270] rcu_core+0x8c8/0x2860 [ 59.317706] __do_softirq+0x1b7/0x7d4 [ 59.318183] [ 59.318389] Last potentially related work creation: [ 59.318961] kasan_save_stack+0x22/0x50 [ 59.319456] __kasan_record_aux_stack+0x8e/0xa0 [ 59.320034] __call_rcu_common.constprop.0+0x6a/0xb90 [ 59.320671] remove_vma+0x139/0x170 [ 59.321107] do_vmi_align_munmap+0xd4a/0x11f0 [ 59.321649] do_vmi_munmap+0x1f1/0x2b0 [ 59.322150] __vm_munmap+0x138/0x3a0 [ 59.322613] __x64_sys_munmap+0x59/0x80 [ 59.323094] do_syscall_64+0x3f/0x90 [ 59.323560] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 59.324187] [ 59.324396] The buggy address belongs to the object at ffff88800e64eae0 [ 59.324396] which belongs to the cache vm_area_struct of size 168 [ 59.325849] The buggy address is located 88 bytes inside of [ 59.325849] freed 168-byte region [ffff88800e64eae0, ffff88800e64eb88) [ 59.327179] [ 59.327384] The buggy address belongs to the physical page: [ 59.328007] page:000000008f725bf7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe64e [ 59.329015] memcg:ffff88800c692001 [ 59.329424] flags: 0x100000000000200(slab|node=0|zone=1) [ 59.330031] page_type: 0xffffffff() [ 59.330470] raw: 0100000000000200 ffff88800879fc80 ffffea00003aa400 dead000000000004 [ 59.331330] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c692001 [ 59.332209] page dumped because: kasan: bad access detected [ 59.332862] [ 59.333068] Memory state around the buggy address: [ 59.333637] ffff88800e64ea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 59.334484] ffff88800e64ea80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 59.335323] >ffff88800e64eb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 59.336156] ^ [ 59.336754] ffff88800e64eb80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 59.337601] ffff88800e64ec00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 59.338443] ================================================================== [ 59.339376] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 60.911843] BUG: Bad rss-counter state mm:00000000b1d78e84 type:MM_FILEPAGES val:33 [ 60.912915] BUG: Bad rss-counter state mm:00000000b1d78e84 type:MM_ANONPAGES val:22 [ 61.388848] BUG: Bad rss-counter state mm:00000000ea5dc024 type:MM_FILEPAGES val:33 [ 61.390075] BUG: Bad rss-counter state mm:00000000ea5dc024 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:43211' (ECDSA) to the list of known hosts. 2023/06/19 19:50:06 fuzzer started 2023/06/19 19:50:07 dialing manager at localhost:44161 2023/06/19 19:50:07 checking machine... 2023/06/19 19:50:07 checking revisions... [ 62.070540] kmemleak: Automatic memory scanning thread ended 2023/06/19 19:50:07 testing simple program... [ 62.119006] cgroup: Unknown subsys name 'net' [ 62.168670] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:49:31 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=1ffff11002f8bfac RCX=0000000000000000 RDX=1ffff11002cfdf9d RSI=ffffffff817180cc RDI=0000000000000007 RBP=ffff8880167ef000 RSP=ffff888017c5fd40 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=ffff8880167efce8 R13=ffffffff852c41f8 R14=ffff88800fcdef00 R15=00000000167ef067 RIP=ffffffff817180e1 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fd7ffb3f900 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=00007ffd33a51f2c CR3=000000000f32a000 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=000000000000000000000000000000ff XMM02=c15f4dd02458ef369f258b18bec18670 XMM03=fdde451c4bed82571c3f80ad3d2f594c XMM04=1a48c255fd9eae4800ba334974c1ad6e XMM05=0000000000000000ff000000000000ff XMM06=1a48451c4b9e8248003f33493d2f594c XMM07=672065736f6c635f6e6f69737365733a 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=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007fffc7b2b948 CR3=000000000f208000 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=30353a3931203931206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3832325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363235 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000