syzkaller login: [ 30.719516] BUG: Bad rss-counter state mm:0000000009676790 type:MM_FILEPAGES val:33 [ 30.720929] BUG: Bad rss-counter state mm:0000000009676790 type:MM_ANONPAGES val:22 [ 30.883912] ================================================================== [ 30.884916] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.885957] Read of size 8 at addr ffff88800f1ff3f8 by task sshd/221 [ 30.886860] [ 30.887136] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.888074] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.889169] Call Trace: [ 30.889530] [ 30.889837] dump_stack_lvl+0x91/0xf0 [ 30.890381] print_report+0xcc/0x620 [ 30.890905] ? __virt_addr_valid+0x102/0x340 [ 30.891497] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.892166] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.892834] kasan_report+0xbe/0xf0 [ 30.893368] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.894061] vma_interval_tree_remove+0xc75/0xec0 [ 30.894733] vma_prepare+0xc54/0x11a0 [ 30.895267] __split_vma+0x5af/0x950 [ 30.895795] ? __pfx___split_vma+0x10/0x10 [ 30.896377] ? find_held_lock+0x2c/0x110 [ 30.896958] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.897611] ? lock_is_held_type+0x9f/0x120 [ 30.898217] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.898892] ? mtree_range_walk+0x632/0x900 [ 30.899508] ? mas_walk+0x5c7/0x7c0 [ 30.900040] do_vmi_munmap+0x1f1/0x2b0 [ 30.900592] mmap_region+0x1f9/0x2660 [ 30.901132] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.901712] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.902504] ? __pfx_lock_acquire+0x10/0x10 [ 30.903097] ? __pfx_mmap_region+0x10/0x10 [ 30.903684] ? security_mmap_addr+0x7d/0xa0 [ 30.904274] ? get_unmapped_area+0x1f5/0x3f0 [ 30.904886] do_mmap+0x854/0xf00 [ 30.905392] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.905948] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.906572] ksys_mmap_pgoff+0x3af/0x500 [ 30.907139] do_syscall_64+0x3f/0x90 [ 30.907667] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.908380] RIP: 0033:0x7f945089bd82 [ 30.908894] 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 [ 30.911259] RSP: 002b:00007fff14bcbc88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.912264] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f945089bd82 [ 30.913202] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f944fcd5000 [ 30.914154] RBP: 00007f944fcd5000 R08: 0000000000000009 R09: 0000000000001000 [ 30.915091] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d3d650aec0 [ 30.916030] R13: 00007fff14bcbca0 R14: 00007fff14bcbcd0 R15: 00007fff14bcc030 [ 30.916979] [ 30.917320] [ 30.917555] Allocated by task 214: [ 30.918027] kasan_save_stack+0x22/0x50 [ 30.918582] kasan_set_track+0x25/0x30 [ 30.919126] __kasan_slab_alloc+0x59/0x70 [ 30.919702] kmem_cache_alloc+0x16b/0x370 [ 30.920265] vm_area_dup+0x20/0x160 [ 30.920760] __split_vma+0x170/0x950 [ 30.921276] split_vma+0xc6/0x110 [ 30.921763] mprotect_fixup+0x8d2/0xb30 [ 30.922316] do_mprotect_pkey+0x87e/0xd40 [ 30.922886] __x64_sys_mprotect+0x78/0xc0 [ 30.923453] do_syscall_64+0x3f/0x90 [ 30.923973] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.924681] [ 30.924918] Freed by task 214: [ 30.925363] kasan_save_stack+0x22/0x50 [ 30.925916] kasan_set_track+0x25/0x30 [ 30.926460] kasan_save_free_info+0x2b/0x50 [ 30.927046] __kasan_slab_free+0x10a/0x190 [ 30.927630] kmem_cache_free+0x10d/0x4d0 [ 30.928283] rcu_core+0x8c8/0x2860 [ 30.928771] __do_softirq+0x1b7/0x7d4 [ 30.929305] [ 30.929542] Last potentially related work creation: [ 30.930186] kasan_save_stack+0x22/0x50 [ 30.930740] __kasan_record_aux_stack+0x8e/0xa0 [ 30.931361] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.932067] remove_vma+0x139/0x170 [ 30.932562] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.933170] do_vmi_munmap+0x1f1/0x2b0 [ 30.933710] __vm_munmap+0x138/0x3a0 [ 30.934219] __x64_sys_munmap+0x59/0x80 [ 30.934758] do_syscall_64+0x3f/0x90 [ 30.935285] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.935987] [ 30.936219] The buggy address belongs to the object at ffff88800f1ff3a0 [ 30.936219] which belongs to the cache vm_area_struct of size 168 [ 30.937840] The buggy address is located 88 bytes inside of [ 30.937840] freed 168-byte region [ffff88800f1ff3a0, ffff88800f1ff448) [ 30.939379] [ 30.939614] The buggy address belongs to the physical page: [ 30.940340] page:00000000267c803f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf1ff [ 30.941538] memcg:ffff88800fde8d01 [ 30.942007] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.942713] page_type: 0xffffffff() [ 30.943204] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.944205] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fde8d01 [ 30.945197] page dumped because: kasan: bad access detected [ 30.945933] [ 30.946163] Memory state around the buggy address: [ 30.946795] ffff88800f1ff280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.947733] ffff88800f1ff300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.948664] >ffff88800f1ff380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.949608] ^ [ 30.950530] ffff88800f1ff400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.951462] ffff88800f1ff480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.952396] ================================================================== [ 30.953542] Disabling lock debugging due to kernel taint [ 33.094904] BUG: Bad rss-counter state mm:00000000e119f29d type:MM_FILEPAGES val:33 [ 33.095702] BUG: Bad rss-counter state mm:00000000e119f29d type:MM_ANONPAGES val:22 [ 33.516338] BUG: Bad rss-counter state mm:000000001647849e type:MM_FILEPAGES val:33 [ 33.517534] BUG: Bad rss-counter state mm:000000001647849e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:16867' (ECDSA) to the list of known hosts. 2023/06/21 01:44:59 fuzzer started 2023/06/21 01:44:59 dialing manager at localhost:36067 2023/06/21 01:44:59 checking machine... 2023/06/21 01:44:59 checking revisions... [ 34.252999] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:45:00 testing simple program... [ 34.295529] cgroup: Unknown subsys name 'net' [ 34.346654] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:44:59 Registers: info registers vcpu 0 RAX=000000000008a84f RBX=0000000000000001 RCX=ffffffff83636215 RDX=000000000008a850 RSI=0000000000026362 RDI=000000000019f8ed RBP=ffff888017fef5d8 RSP=ffff888017fef510 R8 =ffffffff863b2ee2 R9 =ffff888017fef5c0 R10=0000000000038001 R11=000000000008a84f R12=ffff888017fef5e0 R13=ffff888017fef5c8 R14=ffff888017fef5c1 R15=ffff888017fef580 RIP=ffffffff81130853 RFL=00000293 [--S-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 00007f9ff37d0900 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=00007f9ff3d87618 CR3=000000001bc1e000 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=ffffffff8180ce89 RBX=ffffffff813ad470 RCX=ffffffff86138e01 RDX=1ffff110028f7f26 RSI=0000000000000000 RDI=ffffffff8180ce89 RBP=ffff8880147bf970 RSP=ffff8880147bf8d8 R8 =ffffffff86138eb4 R9 =ffff8880147bf918 R10=0000000000038001 R11=0000000000020d9c R12=ffff8880147bf9a0 R13=0000000000000000 R14=ffff8880144fd1c0 R15=0000000000092cc0 RIP=ffffffff810bd06d 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f9099193900 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=00007f90986b1000 CR3=000000000c588000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=f3d851e9abd88a4400000000000ae988 XMM05=263f0256d78cb8230000000000132ea8 XMM06=0c85a005ff2867390000000000131c48 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000