syzkaller login: [ 31.670141] BUG: Bad rss-counter state mm:00000000e9903ae8 type:MM_FILEPAGES val:33 [ 31.671391] BUG: Bad rss-counter state mm:00000000e9903ae8 type:MM_ANONPAGES val:22 [ 31.814813] ================================================================== [ 31.815729] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.816665] Read of size 8 at addr ffff88800e51aa50 by task sshd/220 [ 31.817434] [ 31.817650] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.818647] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.819617] Call Trace: [ 31.819944] [ 31.820241] dump_stack_lvl+0x91/0xf0 [ 31.820731] print_report+0xcc/0x620 [ 31.821243] ? __virt_addr_valid+0x102/0x340 [ 31.821788] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.822404] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.823021] kasan_report+0xbe/0xf0 [ 31.823495] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.824118] vma_interval_tree_remove+0xc75/0xec0 [ 31.824724] vma_prepare+0xc54/0x11a0 [ 31.825221] __split_vma+0x5af/0x950 [ 31.825692] ? __pfx___split_vma+0x10/0x10 [ 31.826224] ? find_held_lock+0x2c/0x110 [ 31.826739] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.827298] ? lock_is_held_type+0x9f/0x120 [ 31.827829] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.828434] ? mtree_range_walk+0x632/0x900 [ 31.828995] ? mas_walk+0x5c7/0x7c0 [ 31.829465] do_vmi_munmap+0x1f1/0x2b0 [ 31.829956] mmap_region+0x1f9/0x2660 [ 31.830438] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.830944] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.831661] ? __pfx_lock_acquire+0x10/0x10 [ 31.832193] ? __pfx_mmap_region+0x10/0x10 [ 31.832717] ? security_mmap_addr+0x7d/0xa0 [ 31.833269] ? get_unmapped_area+0x1f5/0x3f0 [ 31.833821] do_mmap+0x854/0xf00 [ 31.834292] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.834850] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.835394] ksys_mmap_pgoff+0x3af/0x500 [ 31.835876] do_syscall_64+0x3f/0x90 [ 31.836336] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.836961] RIP: 0033:0x7efcc6275d82 [ 31.837398] 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 [ 31.839397] RSP: 002b:00007ffde775b398 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.840256] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007efcc6275d82 [ 31.841065] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007efcc56af000 [ 31.841864] RBP: 00007efcc56af000 R08: 0000000000000009 R09: 0000000000001000 [ 31.842674] R10: 0000000000000812 R11: 0000000000000206 R12: 00005643d325cec0 [ 31.843495] R13: 00007ffde775b3b0 R14: 00007ffde775b3e0 R15: 00007ffde775b740 [ 31.844331] [ 31.844617] [ 31.844847] Allocated by task 213: [ 31.845277] kasan_save_stack+0x22/0x50 [ 31.845775] kasan_set_track+0x25/0x30 [ 31.846257] __kasan_slab_alloc+0x59/0x70 [ 31.846782] kmem_cache_alloc+0x16b/0x370 [ 31.847285] vm_area_dup+0x20/0x160 [ 31.847741] __split_vma+0x170/0x950 [ 31.848197] split_vma+0xc6/0x110 [ 31.848627] mprotect_fixup+0x8d2/0xb30 [ 31.849133] do_mprotect_pkey+0x87e/0xd40 [ 31.849643] __x64_sys_mprotect+0x78/0xc0 [ 31.850158] do_syscall_64+0x3f/0x90 [ 31.850619] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.851262] [ 31.851479] Freed by task 213: [ 31.851870] kasan_save_stack+0x22/0x50 [ 31.852359] kasan_set_track+0x25/0x30 [ 31.852852] kasan_save_free_info+0x2b/0x50 [ 31.853372] __kasan_slab_free+0x10a/0x190 [ 31.853906] kmem_cache_free+0x10d/0x4d0 [ 31.854403] rcu_core+0x8c8/0x2860 [ 31.854844] __do_softirq+0x1b7/0x7d4 [ 31.855314] [ 31.855529] Last potentially related work creation: [ 31.856103] kasan_save_stack+0x22/0x50 [ 31.856587] __kasan_record_aux_stack+0x8e/0xa0 [ 31.857162] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.857775] remove_vma+0x139/0x170 [ 31.858222] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.858768] do_vmi_munmap+0x1f1/0x2b0 [ 31.859256] __vm_munmap+0x138/0x3a0 [ 31.859711] __x64_sys_munmap+0x59/0x80 [ 31.860291] do_syscall_64+0x3f/0x90 [ 31.860784] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.861413] [ 31.861631] Second to last potentially related work creation: [ 31.862302] kasan_save_stack+0x22/0x50 [ 31.862804] __kasan_record_aux_stack+0x8e/0xa0 [ 31.863359] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.863982] remove_vma+0x139/0x170 [ 31.864415] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.864967] do_vmi_munmap+0x1f1/0x2b0 [ 31.865433] mmap_region+0x1f9/0x2660 [ 31.865896] do_mmap+0x854/0xf00 [ 31.866322] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.866807] ksys_mmap_pgoff+0x3af/0x500 [ 31.867291] do_syscall_64+0x3f/0x90 [ 31.867757] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.868388] [ 31.868597] The buggy address belongs to the object at ffff88800e51a9f8 [ 31.868597] which belongs to the cache vm_area_struct of size 168 [ 31.870051] The buggy address is located 88 bytes inside of [ 31.870051] freed 168-byte region [ffff88800e51a9f8, ffff88800e51aaa0) [ 31.871423] [ 31.871639] The buggy address belongs to the physical page: [ 31.872289] page:00000000c6cf2c95 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe51a [ 31.873371] memcg:ffff88800e562401 [ 31.873792] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.874427] page_type: 0xffffffff() [ 31.874866] raw: 0100000000000200 ffff88800879fc80 ffffea000037c600 dead000000000002 [ 31.875776] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e562401 [ 31.876670] page dumped because: kasan: bad access detected [ 31.877321] [ 31.877530] Memory state around the buggy address: [ 31.878107] ffff88800e51a900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.878930] ffff88800e51a980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 31.879774] >ffff88800e51aa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.880606] ^ [ 31.881325] ffff88800e51aa80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 31.882164] ffff88800e51ab00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.883004] ================================================================== [ 31.884107] Disabling lock debugging due to kernel taint [ 33.875194] BUG: Bad rss-counter state mm:0000000034d70449 type:MM_FILEPAGES val:33 [ 33.876380] BUG: Bad rss-counter state mm:0000000034d70449 type:MM_ANONPAGES val:22 [ 34.461572] BUG: Bad rss-counter state mm:000000004e826ccd type:MM_FILEPAGES val:33 [ 34.462554] BUG: Bad rss-counter state mm:000000004e826ccd type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:47961' (ECDSA) to the list of known hosts. 2023/06/19 12:40:36 fuzzer started 2023/06/19 12:40:36 dialing manager at localhost:44161 2023/06/19 12:40:36 checking machine... 2023/06/19 12:40:36 checking revisions... [ 35.127744] kmemleak: Automatic memory scanning thread ended 2023/06/19 12:40:36 testing simple program... [ 35.170876] cgroup: Unknown subsys name 'net' [ 35.235643] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:40:35 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff860acb48 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff888008d7f9a8 RSP=ffff888008d7f8e0 R8 =ffffffff860acb4c R9 =ffff888008d7f990 R10=0000000000038001 R11=0000000000009bea R12=ffff888008d7f9b0 R13=ffff888008d7f998 R14=0000000000000005 R15=ffff888008d7f950 RIP=ffffffff81130b2b RFL=00000297 [--S-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 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=00007fa96edc60b0 CR3=000000000e2c6000 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=30343a3231203931206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383435 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffffffff8180c8da RCX=ffffffff86137d01 RDX=1ffff1100d9e135a RSI=0000000000000000 RDI=ffffffff8180c8da RBP=ffffffff8180c8da RSP=ffff88806cf09a40 R8 =ffffffff86137dd6 R9 =ffff88806cf09ab8 R10=0000000000038001 R11=0000000000020f00 R12=ffff88806cf09b40 R13=0000000000000000 R14=ffff888008d751c0 R15=ffff88800cc19d80 RIP=ffffffff811fc7be RFL=00000292 [--S-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 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=00007f5ddd56aa60 CR3=000000000c9ec000 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=6ea93cee18a95abc8448875c9f568853 XMM02=ec2efd57dc4c00df000000000011fb38 XMM03=6c1f8230be5f0b5a000000000011fc08 XMM04=6386fb18d889953c00000000000ae988 XMM05=19e9129bd510f2350000000000135238 XMM06=be7807cd1a7301a100000000001340a0 XMM07=e042d86d42eb936e00000000001245c8 XMM08=6c1f8230be5f0b5a000000000011fc08 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000