syzkaller login: [ 30.732799] BUG: Bad rss-counter state mm:00000000f5baaae2 type:MM_FILEPAGES val:33 [ 30.734076] BUG: Bad rss-counter state mm:00000000f5baaae2 type:MM_ANONPAGES val:22 [ 30.889118] ================================================================== [ 30.890228] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.891276] Read of size 8 at addr ffff88800da07d08 by task sshd/219 [ 30.892129] [ 30.892347] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.893197] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.894166] Call Trace: [ 30.894482] [ 30.894763] dump_stack_lvl+0x91/0xf0 [ 30.895253] print_report+0xcc/0x620 [ 30.895726] ? __virt_addr_valid+0x102/0x340 [ 30.896266] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.896869] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.897585] kasan_report+0xbe/0xf0 [ 30.898151] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.898873] vma_interval_tree_remove+0xc75/0xec0 [ 30.899577] vma_prepare+0xc54/0x11a0 [ 30.900136] __split_vma+0x5af/0x950 [ 30.900689] ? __pfx___split_vma+0x10/0x10 [ 30.901305] ? find_held_lock+0x2c/0x110 [ 30.901933] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.902593] ? lock_is_held_type+0x9f/0x120 [ 30.903225] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.903932] ? mtree_range_walk+0x632/0x900 [ 30.904579] ? mas_walk+0x5c7/0x7c0 [ 30.905136] do_vmi_munmap+0x1f1/0x2b0 [ 30.905712] mmap_region+0x1f9/0x2660 [ 30.906278] ? mark_held_locks+0x9e/0xe0 [ 30.906868] ? lockdep_hardirqs_on_prepare+0x27b/0x3f0 [ 30.907616] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.908386] ? __pfx_mmap_region+0x10/0x10 [ 30.908998] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 30.909771] ? do_mmap+0x2c8/0xf00 [ 30.910327] do_mmap+0x854/0xf00 [ 30.910837] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.911415] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.912072] ksys_mmap_pgoff+0x3af/0x500 [ 30.912667] do_syscall_64+0x3f/0x90 [ 30.913225] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.913992] RIP: 0033:0x7f7b537e7d82 [ 30.914529] 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 [ 30.917015] RSP: 002b:00007fffc68edb18 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.918083] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7b537e7d82 [ 30.919074] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7b52c21000 [ 30.920063] RBP: 00007f7b52c21000 R08: 0000000000000009 R09: 0000000000001000 [ 30.921055] R10: 0000000000000812 R11: 0000000000000206 R12: 000055bad24a5ec0 [ 30.922059] R13: 00007fffc68edb30 R14: 00007fffc68edb60 R15: 00007fffc68edec0 [ 30.923063] [ 30.923402] [ 30.923652] Allocated by task 212: [ 30.924152] kasan_save_stack+0x22/0x50 [ 30.924737] kasan_set_track+0x25/0x30 [ 30.925314] __kasan_slab_alloc+0x59/0x70 [ 30.925938] kmem_cache_alloc+0x16b/0x370 [ 30.926539] vm_area_dup+0x20/0x160 [ 30.927068] __split_vma+0x170/0x950 [ 30.927610] split_vma+0xc6/0x110 [ 30.928121] mprotect_fixup+0x8d2/0xb30 [ 30.928705] do_mprotect_pkey+0x87e/0xd40 [ 30.929310] __x64_sys_mprotect+0x78/0xc0 [ 30.929925] do_syscall_64+0x3f/0x90 [ 30.930478] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.931232] [ 30.931481] Freed by task 212: [ 30.931939] kasan_save_stack+0x22/0x50 [ 30.932527] kasan_set_track+0x25/0x30 [ 30.933104] kasan_save_free_info+0x2b/0x50 [ 30.933725] __kasan_slab_free+0x10a/0x190 [ 30.934370] kmem_cache_free+0x10d/0x4d0 [ 30.934968] rcu_core+0x8c8/0x2860 [ 30.935491] __do_softirq+0x1b7/0x7d4 [ 30.936050] [ 30.936301] Last potentially related work creation: [ 30.936983] kasan_save_stack+0x22/0x50 [ 30.937569] __kasan_record_aux_stack+0x8e/0xa0 [ 30.938250] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.939000] remove_vma+0x139/0x170 [ 30.939535] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.940185] do_vmi_munmap+0x1f1/0x2b0 [ 30.940750] __vm_munmap+0x138/0x3a0 [ 30.941299] __x64_sys_munmap+0x59/0x80 [ 30.941933] do_syscall_64+0x3f/0x90 [ 30.942566] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.943444] [ 30.943728] The buggy address belongs to the object at ffff88800da07cb0 [ 30.943728] which belongs to the cache vm_area_struct of size 168 [ 30.945764] The buggy address is located 88 bytes inside of [ 30.945764] freed 168-byte region [ffff88800da07cb0, ffff88800da07d58) [ 30.947735] [ 30.948023] The buggy address belongs to the physical page: [ 30.948922] page:00000000bcee2826 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xda07 [ 30.950396] memcg:ffff88800dbbef01 [ 30.950918] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.951731] page_type: 0xffffffff() [ 30.952284] raw: 0100000000000200 ffff8880087a0c80 ffffea00003b5e80 dead000000000002 [ 30.953423] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dbbef01 [ 30.954568] page dumped because: kasan: bad access detected [ 30.955391] [ 30.955648] Memory state around the buggy address: [ 30.956361] ffff88800da07c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 30.957431] ffff88800da07c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 30.958502] >ffff88800da07d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 30.959573] ^ [ 30.960121] ffff88800da07d80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.961193] ffff88800da07e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 30.962162] ================================================================== [ 30.963142] Disabling lock debugging due to kernel taint [ 32.984374] BUG: Bad rss-counter state mm:000000004f4556f9 type:MM_FILEPAGES val:33 [ 32.985532] BUG: Bad rss-counter state mm:000000004f4556f9 type:MM_ANONPAGES val:22 [ 33.576851] BUG: Bad rss-counter state mm:000000009a8cb802 type:MM_FILEPAGES val:33 [ 33.578053] BUG: Bad rss-counter state mm:000000009a8cb802 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:51805' (ECDSA) to the list of known hosts. 2023/06/21 00:20:04 fuzzer started 2023/06/21 00:20:04 dialing manager at localhost:36067 2023/06/21 00:20:04 checking machine... 2023/06/21 00:20:04 checking revisions... [ 34.248363] kmemleak: Automatic memory scanning thread ended 2023/06/21 00:20:05 testing simple program... [ 34.294551] cgroup: Unknown subsys name 'net' [ 34.331802] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:20:04 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffffff85d3e490 RDX=dffffc0000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffffff81378557 RSP=ffff888008d9fd18 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000128 R12=fffffffffffffff6 R13=ffff888008d9fdc8 R14=ffff88806ce3a360 R15=0000000000000200 RIP=ffffffff812d134d RFL=00000046 [---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 0000000000000000 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=00007f1d99f77650 CR3=000000000c572000 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=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffffff0bbfc03 RBX=ffffffff85dfe018 RCX=ffffffff8180c6a1 RDX=0000000000000000 RSI=ffffffff86138e62 RDI=ffffffff85dfe000 RBP=ffffffff85dfe000 RSP=ffff888008e378c0 R8 =ffffffff86138e62 R9 =ffff888008e379b8 R10=0000000000038001 R11=0000000000020d8f R12=ffffffff85dfe034 R13=ffffffff85dfe000 R14=ffffffff85dfe000 R15=dffffc0000000000 RIP=ffffffff8112fc7f 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=00007efdfc0d64b0 CR3=000000000cc58000 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=48bbc727cc426eb2624f8dcaf69d9b6a XMM02=eff9b2d0a8fce9cb000000000011dbf0 XMM03=2c67c8bc2e329bc3000000000011dd18 XMM04=4aae0c73b62b9a8700000000000ae988 XMM05=3bf7aa2a310febb80000000000133448 XMM06=aa56958082f2de3c00000000001321e8 XMM07=fb795ef6d657705600000000001221e8 XMM08=2c67c8bc2e329bc3000000000011dd18 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000