syzkaller login: [ 30.679081] BUG: Bad rss-counter state mm:000000001b73beb2 type:MM_FILEPAGES val:33 [ 30.680434] BUG: Bad rss-counter state mm:000000001b73beb2 type:MM_ANONPAGES val:22 [ 30.729432] ================================================================== [ 30.730769] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.731838] Read of size 8 at addr ffff88800e667df0 by task sshd/219 [ 30.732729] [ 30.732974] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.733957] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.735056] Call Trace: [ 30.735437] [ 30.735758] dump_stack_lvl+0x91/0xf0 [ 30.736330] print_report+0xcc/0x620 [ 30.736881] ? __virt_addr_valid+0x102/0x340 [ 30.737518] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.738208] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.738933] kasan_report+0xbe/0xf0 [ 30.739501] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.740253] vma_interval_tree_remove+0xc75/0xec0 [ 30.740986] vma_prepare+0xc54/0x11a0 [ 30.741564] __split_vma+0x5af/0x950 [ 30.742112] ? __pfx___split_vma+0x10/0x10 [ 30.742737] ? find_held_lock+0x2c/0x110 [ 30.743353] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.744009] ? lock_is_held_type+0x9f/0x120 [ 30.744664] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.745393] ? mtree_range_walk+0x632/0x900 [ 30.746027] ? mas_walk+0x5c7/0x7c0 [ 30.746595] do_vmi_munmap+0x1f1/0x2b0 [ 30.747159] mmap_region+0x1f9/0x2660 [ 30.747728] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.748336] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.749183] ? __pfx_lock_acquire+0x10/0x10 [ 30.749809] ? __pfx_mmap_region+0x10/0x10 [ 30.750440] ? security_mmap_addr+0x7d/0xa0 [ 30.751058] ? get_unmapped_area+0x1f5/0x3f0 [ 30.751707] do_mmap+0x854/0xf00 [ 30.752225] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.752814] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.753485] ksys_mmap_pgoff+0x3af/0x500 [ 30.754075] do_syscall_64+0x3f/0x90 [ 30.754645] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.755416] RIP: 0033:0x7fb59cb0bd82 [ 30.755945] 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 [ 30.758464] RSP: 002b:00007ffd732348e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.759523] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb59cb0bd82 [ 30.760522] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb59bf45000 [ 30.761536] RBP: 00007fb59bf45000 R08: 0000000000000009 R09: 0000000000001000 [ 30.762531] R10: 0000000000000812 R11: 0000000000000206 R12: 00005622d7c20ec0 [ 30.763524] R13: 00007ffd73234900 R14: 00007ffd73234930 R15: 00007ffd73234c90 [ 30.764526] [ 30.764875] [ 30.765122] Allocated by task 212: [ 30.765638] kasan_save_stack+0x22/0x50 [ 30.766218] kasan_set_track+0x25/0x30 [ 30.766800] __kasan_slab_alloc+0x59/0x70 [ 30.767419] kmem_cache_alloc+0x16b/0x370 [ 30.768015] vm_area_dup+0x20/0x160 [ 30.768548] __split_vma+0x170/0x950 [ 30.769110] split_vma+0xc6/0x110 [ 30.769624] mprotect_fixup+0x8d2/0xb30 [ 30.770216] do_mprotect_pkey+0x87e/0xd40 [ 30.770820] __x64_sys_mprotect+0x78/0xc0 [ 30.771438] do_syscall_64+0x3f/0x90 [ 30.771984] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.772746] [ 30.772996] Freed by task 212: [ 30.773455] kasan_save_stack+0x22/0x50 [ 30.774032] kasan_set_track+0x25/0x30 [ 30.774615] kasan_save_free_info+0x2b/0x50 [ 30.775228] __kasan_slab_free+0x10a/0x190 [ 30.775847] kmem_cache_free+0x10d/0x4d0 [ 30.776447] rcu_core+0x8c8/0x2860 [ 30.776960] __do_softirq+0x1b7/0x7d4 [ 30.777513] [ 30.777761] Last potentially related work creation: [ 30.778439] kasan_save_stack+0x22/0x50 [ 30.779009] __kasan_record_aux_stack+0x8e/0xa0 [ 30.779670] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.780427] remove_vma+0x139/0x170 [ 30.780950] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.781596] do_vmi_munmap+0x1f1/0x2b0 [ 30.782146] __vm_munmap+0x138/0x3a0 [ 30.782684] __x64_sys_munmap+0x59/0x80 [ 30.783267] do_syscall_64+0x3f/0x90 [ 30.783805] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.784545] [ 30.784794] Second to last potentially related work creation: [ 30.785588] kasan_save_stack+0x22/0x50 [ 30.786158] __kasan_record_aux_stack+0x8e/0xa0 [ 30.786815] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.787550] remove_vma+0x139/0x170 [ 30.788057] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.788733] do_vmi_munmap+0x1f1/0x2b0 [ 30.789296] mmap_region+0x1f9/0x2660 [ 30.789839] do_mmap+0x854/0xf00 [ 30.790343] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.790897] ksys_mmap_pgoff+0x3af/0x500 [ 30.791476] do_syscall_64+0x3f/0x90 [ 30.792013] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.792769] [ 30.793011] The buggy address belongs to the object at ffff88800e667d98 [ 30.793011] which belongs to the cache vm_area_struct of size 168 [ 30.794691] The buggy address is located 88 bytes inside of [ 30.794691] freed 168-byte region [ffff88800e667d98, ffff88800e667e40) [ 30.796309] [ 30.796554] The buggy address belongs to the physical page: [ 30.797324] page:000000009c94ea0d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe667 [ 30.798549] memcg:ffff88800eb4c101 [ 30.799026] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.799764] page_type: 0xffffffff() [ 30.800288] raw: 0100000000000200 ffff8880087a0c80 ffffea00003a9e80 0000000000000006 [ 30.801352] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800eb4c101 [ 30.802372] page dumped because: kasan: bad access detected [ 30.803111] [ 30.803369] Memory state around the buggy address: [ 30.804020] ffff88800e667c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 30.805001] ffff88800e667d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 30.805954] >ffff88800e667d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 30.806880] ^ [ 30.807774] ffff88800e667e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.808720] ffff88800e667e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.809652] ================================================================== [ 30.811445] Disabling lock debugging due to kernel taint [ 32.780944] BUG: Bad rss-counter state mm:00000000344d3246 type:MM_FILEPAGES val:33 [ 32.781970] BUG: Bad rss-counter state mm:00000000344d3246 type:MM_ANONPAGES val:22 [ 33.345597] BUG: Bad rss-counter state mm:00000000fb462860 type:MM_FILEPAGES val:33 [ 33.346792] BUG: Bad rss-counter state mm:00000000fb462860 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7329' (ECDSA) to the list of known hosts. 2023/06/20 14:39:11 fuzzer started 2023/06/20 14:39:11 dialing manager at localhost:36067 2023/06/20 14:39:11 checking machine... 2023/06/20 14:39:11 checking revisions... [ 34.008305] kmemleak: Automatic memory scanning thread ended 2023/06/20 14:39:11 testing simple program... [ 34.073437] cgroup: Unknown subsys name 'net' [ 34.139307] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:39:10 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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=00007ffcafca3738 CR3=0000000005482000 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=00007f82d91e451000005624f48a3790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88801ca4b8c0 RCX=ffffffff8367561a RDX=ffff888015fe51c0 RSI=0000000000000000 RDI=0000000000000005 RBP=0000000000000140 RSP=ffff88800d627788 R8 =0000000000000005 R9 =0000000000000140 R10=0000000000000140 R11=00000000000b6a61 R12=ffff8880146acf00 R13=0000000000000000 R14=0000000000000000 R15=ffff888014637600 RIP=ffffffff814c0864 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 00007f0e1ae73900 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=00007f0e1b42a618 CR3=0000000010058000 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=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