[ 24.698237] BUG: Bad rss-counter state mm:000000007f9a7212 type:MM_FILEPAGES val:33 [ 24.700427] BUG: Bad rss-counter state mm:000000007f9a7212 type:MM_ANONPAGES val:22 [ 24.863543] ================================================================== [ 24.864448] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.865387] Read of size 8 at addr ffff88800e0f5b38 by task sshd/219 [ 24.866162] [ 24.866383] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.867316] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.868284] Call Trace: [ 24.868604] [ 24.868894] dump_stack_lvl+0x91/0xf0 [ 24.869389] print_report+0xcc/0x620 [ 24.869876] ? __virt_addr_valid+0x102/0x340 [ 24.870455] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.871073] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.871692] kasan_report+0xbe/0xf0 [ 24.872171] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.872802] vma_interval_tree_remove+0xc75/0xec0 [ 24.873409] vma_prepare+0xc54/0x11a0 [ 24.873895] __split_vma+0x5af/0x950 [ 24.874379] ? __pfx___split_vma+0x10/0x10 [ 24.874914] ? find_held_lock+0x2c/0x110 [ 24.875436] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.876008] ? lock_is_held_type+0x9f/0x120 [ 24.876549] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.877160] ? mtree_range_walk+0x632/0x900 [ 24.877714] ? mas_walk+0x5c7/0x7c0 [ 24.878209] do_vmi_munmap+0x1f1/0x2b0 [ 24.878702] mmap_region+0x1f9/0x2660 [ 24.879201] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.879717] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.880430] ? __pfx_lock_acquire+0x10/0x10 [ 24.880975] ? __pfx_mmap_region+0x10/0x10 [ 24.881509] ? security_mmap_addr+0x7d/0xa0 [ 24.882044] ? get_unmapped_area+0x1f5/0x3f0 [ 24.882608] do_mmap+0x854/0xf00 [ 24.883049] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.883540] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.884105] ksys_mmap_pgoff+0x3af/0x500 [ 24.884618] do_syscall_64+0x3f/0x90 [ 24.885104] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.885756] RIP: 0033:0x7f46edeb3d82 [ 24.886223] 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 [ 24.888379] RSP: 002b:00007ffc76510798 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.889285] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f46edeb3d82 [ 24.890152] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f46ed2ed000 [ 24.891010] RBP: 00007f46ed2ed000 R08: 0000000000000009 R09: 0000000000001000 [ 24.891862] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b491097f70 [ 24.892709] R13: 00007ffc765107b0 R14: 00007ffc765107e0 R15: 00007ffc76510b40 [ 24.893582] [ 24.893875] [ 24.894098] Allocated by task 212: [ 24.894527] kasan_save_stack+0x22/0x50 [ 24.895030] kasan_set_track+0x25/0x30 [ 24.895530] __kasan_slab_alloc+0x59/0x70 [ 24.896056] kmem_cache_alloc+0x16b/0x370 [ 24.896579] vm_area_dup+0x20/0x160 [ 24.897030] __split_vma+0x170/0x950 [ 24.897500] split_vma+0xc6/0x110 [ 24.897947] mprotect_fixup+0x8d2/0xb30 [ 24.898467] do_mprotect_pkey+0x87e/0xd40 [ 24.898991] __x64_sys_mprotect+0x78/0xc0 [ 24.899508] do_syscall_64+0x3f/0x90 [ 24.899985] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.900628] [ 24.900844] Freed by task 212: [ 24.901239] kasan_save_stack+0x22/0x50 [ 24.901744] kasan_set_track+0x25/0x30 [ 24.902244] kasan_save_free_info+0x2b/0x50 [ 24.902775] __kasan_slab_free+0x10a/0x190 [ 24.903307] kmem_cache_free+0x10d/0x4d0 [ 24.903817] rcu_core+0x8c8/0x2860 [ 24.904264] __do_softirq+0x1b7/0x7d4 [ 24.904743] [ 24.904961] Last potentially related work creation: [ 24.905553] kasan_save_stack+0x22/0x50 [ 24.906080] __kasan_record_aux_stack+0x8e/0xa0 [ 24.906657] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.907303] remove_vma+0x139/0x170 [ 24.907757] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.908319] do_vmi_munmap+0x1f1/0x2b0 [ 24.908807] __vm_munmap+0x138/0x3a0 [ 24.909275] __x64_sys_munmap+0x59/0x80 [ 24.909781] do_syscall_64+0x3f/0x90 [ 24.910268] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.910908] [ 24.911129] Second to last potentially related work creation: [ 24.911817] kasan_save_stack+0x22/0x50 [ 24.912321] __kasan_record_aux_stack+0x8e/0xa0 [ 24.912897] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.913536] remove_vma+0x139/0x170 [ 24.913987] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.914563] do_vmi_munmap+0x1f1/0x2b0 [ 24.915050] mmap_region+0x1f9/0x2660 [ 24.915529] do_mmap+0x854/0xf00 [ 24.915958] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.916447] ksys_mmap_pgoff+0x3af/0x500 [ 24.916945] do_syscall_64+0x3f/0x90 [ 24.917417] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.918083] [ 24.918296] The buggy address belongs to the object at ffff88800e0f5ae0 [ 24.918296] which belongs to the cache vm_area_struct of size 168 [ 24.919780] The buggy address is located 88 bytes inside of [ 24.919780] freed 168-byte region [ffff88800e0f5ae0, ffff88800e0f5b88) [ 24.921175] [ 24.921390] The buggy address belongs to the physical page: [ 24.922084] page:00000000b30a9794 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe0f5 [ 24.923173] memcg:ffff88800c79be01 [ 24.923604] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.924308] page_type: 0xffffffff() [ 24.924759] raw: 0100000000000200 ffff88800879fc80 ffffea000032fb80 dead000000000005 [ 24.925687] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c79be01 [ 24.926620] page dumped because: kasan: bad access detected [ 24.927289] [ 24.927502] Memory state around the buggy address: [ 24.928083] ffff88800e0f5a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.928941] ffff88800e0f5a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 24.929803] >ffff88800e0f5b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.930656] ^ [ 24.931270] ffff88800e0f5b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 24.932121] ffff88800e0f5c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 24.932969] ================================================================== [ 24.933929] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.698045] BUG: Bad rss-counter state mm:000000004ca44073 type:MM_FILEPAGES val:33 [ 26.698822] BUG: Bad rss-counter state mm:000000004ca44073 type:MM_ANONPAGES val:22 [ 27.136166] BUG: Bad rss-counter state mm:00000000b64d7a4f type:MM_FILEPAGES val:33 [ 27.137323] BUG: Bad rss-counter state mm:00000000b64d7a4f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:21075' (ECDSA) to the list of known hosts. 2023/06/20 09:24:38 fuzzer started 2023/06/20 09:24:38 dialing manager at localhost:44161 2023/06/20 09:24:38 checking machine... 2023/06/20 09:24:38 checking revisions... [ 27.846175] kmemleak: Automatic memory scanning thread ended 2023/06/20 09:24:38 testing simple program... [ 27.897361] cgroup: Unknown subsys name 'net' [ 27.935436] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 09:24:37 Registers: info registers vcpu 0 RAX=1ffffffff0bf4871 RBX=ffffffff85fa438c RCX=ffffffff83644343 RDX=0000000000000000 RSI=ffffffff863b2b5a RDI=ffffffff85fa4388 RBP=ffffffff85fa4388 RSP=ffff88800f65f4f0 R8 =ffffffff863b2b5a R9 =ffff88800f65f5e8 R10=0000000000038001 R11=000000000008abed R12=ffffffff85fa4390 R13=ffffffff85fa4388 R14=ffffffff85fa4388 R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000217 [----APC] 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 00007fe8e5c11900 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=00007f69943012a0 CR3=000000000f2bc000 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=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 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=00007fe8e61c8618 CR3=000000000e394000 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=2037333a34323a3930203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037333a34323a3930203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000