syzkaller login: [ 30.727225] BUG: Bad rss-counter state mm:0000000045867c25 type:MM_FILEPAGES val:33 [ 30.729123] BUG: Bad rss-counter state mm:0000000045867c25 type:MM_ANONPAGES val:22 [ 30.897116] ================================================================== [ 30.898094] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.899127] Read of size 8 at addr ffff888015877968 by task sshd/219 [ 30.900101] [ 30.900422] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.901462] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.902516] Call Trace: [ 30.902858] [ 30.903158] dump_stack_lvl+0x91/0xf0 [ 30.903698] print_report+0xcc/0x620 [ 30.904217] ? __virt_addr_valid+0x102/0x340 [ 30.904852] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.905530] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.906182] kasan_report+0xbe/0xf0 [ 30.906703] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.907371] vma_interval_tree_remove+0xc75/0xec0 [ 30.908013] vma_prepare+0xc54/0x11a0 [ 30.908568] __split_vma+0x5af/0x950 [ 30.909071] ? __pfx___split_vma+0x10/0x10 [ 30.909639] ? find_held_lock+0x2c/0x110 [ 30.910194] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.910816] ? lock_is_held_type+0x9f/0x120 [ 30.911413] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.912061] ? mtree_range_walk+0x632/0x900 [ 30.912682] ? mas_walk+0x5c7/0x7c0 [ 30.913191] do_vmi_munmap+0x1f1/0x2b0 [ 30.913740] mmap_region+0x1f9/0x2660 [ 30.914258] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.914824] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.915603] ? __pfx_lock_acquire+0x10/0x10 [ 30.916177] ? __pfx_mmap_region+0x10/0x10 [ 30.916789] ? security_mmap_addr+0x7d/0xa0 [ 30.917368] ? get_unmapped_area+0x1f5/0x3f0 [ 30.917964] do_mmap+0x854/0xf00 [ 30.918443] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.918965] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.919582] ksys_mmap_pgoff+0x3af/0x500 [ 30.920122] do_syscall_64+0x3f/0x90 [ 30.920671] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.921383] RIP: 0033:0x7fefc8e62d82 [ 30.921866] 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 [ 30.924158] RSP: 002b:00007ffc9b076b68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.925176] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fefc8e62d82 [ 30.926094] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fefc829c000 [ 30.927007] RBP: 00007fefc829c000 R08: 0000000000000009 R09: 0000000000001000 [ 30.927924] R10: 0000000000000812 R11: 0000000000000206 R12: 000055dc3143cec0 [ 30.928858] R13: 00007ffc9b076b80 R14: 00007ffc9b076bb0 R15: 00007ffc9b076f10 [ 30.929787] [ 30.930099] [ 30.930333] Allocated by task 212: [ 30.930799] kasan_save_stack+0x22/0x50 [ 30.931349] kasan_set_track+0x25/0x30 [ 30.931881] __kasan_slab_alloc+0x59/0x70 [ 30.932478] kmem_cache_alloc+0x16b/0x370 [ 30.933025] vm_area_dup+0x20/0x160 [ 30.933529] __split_vma+0x170/0x950 [ 30.934029] split_vma+0xc6/0x110 [ 30.934516] mprotect_fixup+0x8d2/0xb30 [ 30.935055] do_mprotect_pkey+0x87e/0xd40 [ 30.935628] __x64_sys_mprotect+0x78/0xc0 [ 30.936186] do_syscall_64+0x3f/0x90 [ 30.936739] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.937456] [ 30.937685] Freed by task 212: [ 30.938109] kasan_save_stack+0x22/0x50 [ 30.938668] kasan_set_track+0x25/0x30 [ 30.939190] kasan_save_free_info+0x2b/0x50 [ 30.939775] __kasan_slab_free+0x10a/0x190 [ 30.940346] kmem_cache_free+0x10d/0x4d0 [ 30.941089] rcu_core+0x8c8/0x2860 [ 30.941586] __do_softirq+0x1b7/0x7d4 [ 30.942094] [ 30.942322] Last potentially related work creation: [ 30.942950] kasan_save_stack+0x22/0x50 [ 30.943498] __kasan_record_aux_stack+0x8e/0xa0 [ 30.944103] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.944835] remove_vma+0x139/0x170 [ 30.945321] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.945926] do_vmi_munmap+0x1f1/0x2b0 [ 30.946458] __vm_munmap+0x138/0x3a0 [ 30.946951] __x64_sys_munmap+0x59/0x80 [ 30.947494] do_syscall_64+0x3f/0x90 [ 30.948010] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.948738] [ 30.948966] The buggy address belongs to the object at ffff888015877910 [ 30.948966] which belongs to the cache vm_area_struct of size 168 [ 30.950533] The buggy address is located 88 bytes inside of [ 30.950533] freed 168-byte region [ffff888015877910, ffff8880158779b8) [ 30.952037] [ 30.952264] The buggy address belongs to the physical page: [ 30.953010] page:00000000936f1d64 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15877 [ 30.954200] memcg:ffff888010339e01 [ 30.954663] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.955365] page_type: 0xffffffff() [ 30.955846] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.956865] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888010339e01 [ 30.957842] page dumped because: kasan: bad access detected [ 30.958550] [ 30.958777] Memory state around the buggy address: [ 30.959402] ffff888015877800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 30.960305] ffff888015877880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 30.961255] >ffff888015877900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.962177] ^ [ 30.963026] ffff888015877980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 30.963947] ffff888015877a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.964904] ================================================================== [ 30.965893] Disabling lock debugging due to kernel taint [ 33.690507] BUG: Bad rss-counter state mm:0000000029918707 type:MM_FILEPAGES val:33 [ 33.691433] BUG: Bad rss-counter state mm:0000000029918707 type:MM_ANONPAGES val:22 [ 34.210372] BUG: Bad rss-counter state mm:000000005a3da998 type:MM_FILEPAGES val:33 [ 34.211522] BUG: Bad rss-counter state mm:000000005a3da998 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:44055' (ECDSA) to the list of known hosts. 2023/06/21 10:28:58 fuzzer started 2023/06/21 10:28:58 dialing manager at localhost:36067 2023/06/21 10:28:58 checking machine... 2023/06/21 10:28:58 checking revisions... [ 34.933114] kmemleak: Automatic memory scanning thread ended 2023/06/21 10:28:58 testing simple program... [ 34.985175] cgroup: Unknown subsys name 'net' [ 35.027382] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 10:28:58 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff813ad470 RCX=ffffffff86138e01 RDX=1ffff1100343ef61 RSI=ffffffff8180c705 RDI=ffff88801a1f7b08 RBP=ffff88801a1f7ba0 RSP=ffff88801a1f7ae0 R8 =ffffffff86138e90 R9 =ffff88801a1f7b48 R10=0000000000038001 R11=0000000000020d8f R12=ffff88801a1f7bd0 R13=0000000000000000 R14=ffff8880145a51c0 R15=ffff88801a1f7b08 RIP=ffffffff811305f0 RFL=00000212 [----A--] 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 00007f73f277e900 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=00007f73f273201c CR3=000000000edea000 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=ffffffff00ffffffffffffffffffffff XMM01=707465675f6c697475646f6d6d61705f XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffff88806cf361a0 RCX=ffffffff8182e41e RDX=ffffed1001b65ba4 RSI=0000000000000004 RDI=ffff88800db2dd18 RBP=ffff88806cf361e0 RSP=ffff88806cf09d60 R8 =0000000000000001 R9 =ffffed1001b65ba3 R10=ffff88800db2dd1b R11=00000000000b6d53 R12=ffff88800db2dd00 R13=0000000000000000 R14=0000000000000a58 R15=ffff88806cf361f0 RIP=ffffffff8182e424 RFL=00000002 [-------] 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 00007f45c452d900 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=00007f45c3991520 CR3=000000000d630000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=704d9c91155fc52600000000000ae988 XMM05=af66ff8cfe66792200000000001327a8 XMM06=dfcdbad4f1609c370000000000131640 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000