syzkaller login: [ 30.753693] BUG: Bad rss-counter state mm:00000000d4c2cfed type:MM_FILEPAGES val:33 [ 30.754922] BUG: Bad rss-counter state mm:00000000d4c2cfed type:MM_ANONPAGES val:22 [ 30.795324] ================================================================== [ 30.796294] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.797267] Read of size 8 at addr ffff88800ef50140 by task sshd/220 [ 30.798069] [ 30.798291] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.799163] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.800143] Call Trace: [ 30.800463] [ 30.800748] dump_stack_lvl+0x91/0xf0 [ 30.801232] print_report+0xcc/0x620 [ 30.801715] ? __virt_addr_valid+0x102/0x340 [ 30.802293] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.802905] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.803542] kasan_report+0xbe/0xf0 [ 30.804015] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.804636] vma_interval_tree_remove+0xc75/0xec0 [ 30.805227] vma_prepare+0xc54/0x11a0 [ 30.805702] __split_vma+0x5af/0x950 [ 30.806207] ? __pfx___split_vma+0x10/0x10 [ 30.806731] ? find_held_lock+0x2c/0x110 [ 30.807249] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.807831] ? lock_is_held_type+0x9f/0x120 [ 30.808366] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.808968] ? mtree_range_walk+0x632/0x900 [ 30.809516] ? mas_walk+0x5c7/0x7c0 [ 30.810027] do_vmi_munmap+0x1f1/0x2b0 [ 30.810523] mmap_region+0x1f9/0x2660 [ 30.811013] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.811544] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.812266] ? __pfx_lock_acquire+0x10/0x10 [ 30.812804] ? __pfx_mmap_region+0x10/0x10 [ 30.813333] ? security_mmap_addr+0x7d/0xa0 [ 30.813899] ? get_unmapped_area+0x1f5/0x3f0 [ 30.814461] do_mmap+0x854/0xf00 [ 30.814912] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.815432] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.815997] ksys_mmap_pgoff+0x3af/0x500 [ 30.816498] do_syscall_64+0x3f/0x90 [ 30.816995] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.817643] RIP: 0033:0x7f68be748d82 [ 30.818138] 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 [ 30.820266] RSP: 002b:00007fff5baee258 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.821169] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f68be748d82 [ 30.822046] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f68bdb82000 [ 30.822891] RBP: 00007f68bdb82000 R08: 0000000000000009 R09: 0000000000001000 [ 30.823757] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561b63bdcb20 [ 30.824611] R13: 00007fff5baee270 R14: 00007fff5baee2a0 R15: 00007fff5baee600 [ 30.825475] [ 30.825766] [ 30.826023] Allocated by task 213: [ 30.826463] kasan_save_stack+0x22/0x50 [ 30.826970] kasan_set_track+0x25/0x30 [ 30.827482] __kasan_slab_alloc+0x59/0x70 [ 30.828010] kmem_cache_alloc+0x16b/0x370 [ 30.828534] vm_area_dup+0x20/0x160 [ 30.828993] __split_vma+0x170/0x950 [ 30.829476] split_vma+0xc6/0x110 [ 30.829966] mprotect_fixup+0x8d2/0xb30 [ 30.830488] do_mprotect_pkey+0x87e/0xd40 [ 30.831026] __x64_sys_mprotect+0x78/0xc0 [ 30.831574] do_syscall_64+0x3f/0x90 [ 30.832066] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.832726] [ 30.832946] Freed by task 213: [ 30.833347] kasan_save_stack+0x22/0x50 [ 30.833900] kasan_set_track+0x25/0x30 [ 30.834421] kasan_save_free_info+0x2b/0x50 [ 30.834970] __kasan_slab_free+0x10a/0x190 [ 30.835546] kmem_cache_free+0x10d/0x4d0 [ 30.836084] rcu_core+0x8c8/0x2860 [ 30.836552] __do_softirq+0x1b7/0x7d4 [ 30.837047] [ 30.837267] Last potentially related work creation: [ 30.837902] kasan_save_stack+0x22/0x50 [ 30.838431] __kasan_record_aux_stack+0x8e/0xa0 [ 30.839020] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.839703] remove_vma+0x139/0x170 [ 30.840172] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.840745] do_vmi_munmap+0x1f1/0x2b0 [ 30.841248] __vm_munmap+0x138/0x3a0 [ 30.841733] __x64_sys_munmap+0x59/0x80 [ 30.842280] do_syscall_64+0x3f/0x90 [ 30.842773] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.843480] [ 30.843701] Second to last potentially related work creation: [ 30.844417] kasan_save_stack+0x22/0x50 [ 30.844938] __kasan_record_aux_stack+0x8e/0xa0 [ 30.845535] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.846199] remove_vma+0x139/0x170 [ 30.846664] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.847273] do_vmi_munmap+0x1f1/0x2b0 [ 30.847815] mmap_region+0x1f9/0x2660 [ 30.848311] do_mmap+0x854/0xf00 [ 30.848758] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.849276] ksys_mmap_pgoff+0x3af/0x500 [ 30.849799] do_syscall_64+0x3f/0x90 [ 30.850287] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.850993] [ 30.851216] The buggy address belongs to the object at ffff88800ef500e8 [ 30.851216] which belongs to the cache vm_area_struct of size 168 [ 30.852746] The buggy address is located 88 bytes inside of [ 30.852746] freed 168-byte region [ffff88800ef500e8, ffff88800ef50190) [ 30.854197] [ 30.854418] The buggy address belongs to the physical page: [ 30.855135] page:0000000095a2d12f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xef50 [ 30.856274] memcg:ffff888009a4cb01 [ 30.856721] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.857447] page_type: 0xffffffff() [ 30.857911] raw: 0100000000000200 ffff8880087a0c80 ffffea0000355d40 dead000000000005 [ 30.858899] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888009a4cb01 [ 30.859884] page dumped because: kasan: bad access detected [ 30.860571] [ 30.860792] Memory state around the buggy address: [ 30.861410] ffff88800ef50000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.862295] ffff88800ef50080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 30.863226] >ffff88800ef50100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.864130] ^ [ 30.864792] ffff88800ef50180: fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 [ 30.865684] ffff88800ef50200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.866561] ================================================================== [ 30.867623] Disabling lock debugging due to kernel taint [ 32.570309] BUG: Bad rss-counter state mm:000000001a5b52fa type:MM_FILEPAGES val:33 [ 32.571311] BUG: Bad rss-counter state mm:000000001a5b52fa type:MM_ANONPAGES val:22 [ 33.089428] BUG: Bad rss-counter state mm:0000000064f70108 type:MM_FILEPAGES val:33 [ 33.090475] BUG: Bad rss-counter state mm:0000000064f70108 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:22796' (ECDSA) to the list of known hosts. 2023/06/21 05:58:04 fuzzer started 2023/06/21 05:58:04 dialing manager at localhost:36067 2023/06/21 05:58:04 checking machine... 2023/06/21 05:58:04 checking revisions... [ 33.798264] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:58:04 testing simple program... [ 33.860055] cgroup: Unknown subsys name 'net' [ 33.921200] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:58:03 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff864136b6 RDX=1ffff11002b13ea2 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff88801589f520 RSP=ffff88801589f458 R8 =ffffffff864136ba R9 =ffff88801589f508 R10=0000000000038001 R11=000000000009a99d R12=ffff88801589f528 R13=ffff88801589f510 R14=0000000000000005 R15=ffff88801589f4c8 RIP=ffffffff81130b54 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 00007f57cde44900 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=00007f57cd246190 CR3=000000000c644000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=d6945d499cfb6ce300000000000ae988 XMM05=a0a3a5e12bff5f150000000000133c28 XMM06=4fda316b135da52b0000000000132a18 XMM07=fb795ef6d65770560000000000121a00 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff88806cf3a360 RCX=1ffff1100d9e745c RDX=1ffff1100d9e7401 RSI=ffff88800ef83fa0 RDI=ffff88806cf3a360 RBP=0000000000000200 RSP=ffff88806cf09d70 R8 =ffffffff85616740 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=ffffffff81213110 R13=ffff88806cf3a3a8 R14=ffff88806cf3a2c0 R15=0000000000000000 RIP=ffffffff81380693 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 00007f9f145bf900 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=00007ffec5293000 CR3=000000000e700000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000