syzkaller login: [ 30.688450] BUG: Bad rss-counter state mm:0000000001bb53a6 type:MM_FILEPAGES val:33 [ 30.689630] BUG: Bad rss-counter state mm:0000000001bb53a6 type:MM_ANONPAGES val:22 [ 30.846168] ================================================================== [ 30.847112] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.848133] Read of size 8 at addr ffff8880146c95c8 by task sshd/222 [ 30.848995] [ 30.849468] CPU: 1 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.850439] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.851371] Call Trace: [ 30.851701] [ 30.851971] dump_stack_lvl+0x91/0xf0 [ 30.852433] print_report+0xcc/0x620 [ 30.852903] ? __virt_addr_valid+0x102/0x340 [ 30.853441] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.854035] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.854631] kasan_report+0xbe/0xf0 [ 30.855079] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.855674] vma_interval_tree_remove+0xc75/0xec0 [ 30.856239] vma_prepare+0xc54/0x11a0 [ 30.856708] __split_vma+0x5af/0x950 [ 30.857152] ? __pfx___split_vma+0x10/0x10 [ 30.857672] ? find_held_lock+0x2c/0x110 [ 30.858161] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.858708] ? lock_is_held_type+0x9f/0x120 [ 30.859218] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.859826] ? mtree_range_walk+0x632/0x900 [ 30.860370] ? mas_walk+0x5c7/0x7c0 [ 30.860852] do_vmi_munmap+0x1f1/0x2b0 [ 30.861364] mmap_region+0x1f9/0x2660 [ 30.861851] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.862358] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.863063] ? __pfx_lock_acquire+0x10/0x10 [ 30.863591] ? __pfx_mmap_region+0x10/0x10 [ 30.864110] ? security_mmap_addr+0x7d/0xa0 [ 30.864635] ? get_unmapped_area+0x1f5/0x3f0 [ 30.865180] do_mmap+0x854/0xf00 [ 30.865626] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.866115] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.866685] ksys_mmap_pgoff+0x3af/0x500 [ 30.867190] do_syscall_64+0x3f/0x90 [ 30.867669] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.868309] RIP: 0033:0x7fa594b7cd82 [ 30.868761] 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 [ 30.870872] RSP: 002b:00007ffd24b786d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.871763] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa594b7cd82 [ 30.872583] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa593fb6000 [ 30.873431] RBP: 00007fa593fb6000 R08: 0000000000000009 R09: 0000000000001000 [ 30.874256] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e82473dec0 [ 30.875088] R13: 00007ffd24b786f0 R14: 00007ffd24b78720 R15: 00007ffd24b78a80 [ 30.875901] [ 30.876175] [ 30.876377] Allocated by task 215: [ 30.876796] kasan_save_stack+0x22/0x50 [ 30.877289] kasan_set_track+0x25/0x30 [ 30.877766] __kasan_slab_alloc+0x59/0x70 [ 30.878263] kmem_cache_alloc+0x16b/0x370 [ 30.878766] vm_area_dup+0x20/0x160 [ 30.879192] __split_vma+0x170/0x950 [ 30.879644] split_vma+0xc6/0x110 [ 30.880057] mprotect_fixup+0x8d2/0xb30 [ 30.880535] do_mprotect_pkey+0x87e/0xd40 [ 30.881051] __x64_sys_mprotect+0x78/0xc0 [ 30.881556] do_syscall_64+0x3f/0x90 [ 30.882015] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.882630] [ 30.882841] Freed by task 215: [ 30.883215] kasan_save_stack+0x22/0x50 [ 30.883711] kasan_set_track+0x25/0x30 [ 30.884172] kasan_save_free_info+0x2b/0x50 [ 30.884693] __kasan_slab_free+0x10a/0x190 [ 30.885199] kmem_cache_free+0x10d/0x4d0 [ 30.885715] rcu_core+0x8c8/0x2860 [ 30.886139] __do_softirq+0x1b7/0x7d4 [ 30.886604] [ 30.886812] Last potentially related work creation: [ 30.887360] kasan_save_stack+0x22/0x50 [ 30.887851] __kasan_record_aux_stack+0x8e/0xa0 [ 30.888394] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.889008] remove_vma+0x139/0x170 [ 30.889448] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.890220] do_vmi_munmap+0x1f1/0x2b0 [ 30.890719] __vm_munmap+0x138/0x3a0 [ 30.891179] __x64_sys_munmap+0x59/0x80 [ 30.891663] do_syscall_64+0x3f/0x90 [ 30.892135] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.892755] [ 30.892961] The buggy address belongs to the object at ffff8880146c9570 [ 30.892961] which belongs to the cache vm_area_struct of size 168 [ 30.894448] The buggy address is located 88 bytes inside of [ 30.894448] freed 168-byte region [ffff8880146c9570, ffff8880146c9618) [ 30.895793] [ 30.895998] The buggy address belongs to the physical page: [ 30.896628] page:00000000619152c5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x146c9 [ 30.897681] memcg:ffff888016a79001 [ 30.898083] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.898696] page_type: 0xffffffff() [ 30.899122] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.899997] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016a79001 [ 30.900858] page dumped because: kasan: bad access detected [ 30.901500] [ 30.901720] Memory state around the buggy address: [ 30.902261] ffff8880146c9480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.903079] ffff8880146c9500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.903892] >ffff8880146c9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.904708] ^ [ 30.905342] ffff8880146c9600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.906154] ffff8880146c9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.906967] ================================================================== [ 30.907870] Disabling lock debugging due to kernel taint [ 33.183320] BUG: Bad rss-counter state mm:00000000445d79a2 type:MM_FILEPAGES val:33 [ 33.184453] BUG: Bad rss-counter state mm:00000000445d79a2 type:MM_ANONPAGES val:22 [ 33.763965] BUG: Bad rss-counter state mm:000000001cc88b41 type:MM_FILEPAGES val:33 [ 33.765198] BUG: Bad rss-counter state mm:000000001cc88b41 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13484' (ECDSA) to the list of known hosts. 2023/06/20 17:55:07 fuzzer started 2023/06/20 17:55:08 dialing manager at localhost:36067 2023/06/20 17:55:08 checking machine... 2023/06/20 17:55:08 checking revisions... [ 34.402687] kmemleak: Automatic memory scanning thread ended 2023/06/20 17:55:08 testing simple program... [ 34.448279] cgroup: Unknown subsys name 'net' [ 34.486795] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:55:07 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=ffff888008c04000 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=00007f2be9012f40 CR3=00000000096f6000 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=2037303a35353a3731203032206e754a XMM01=73732878696e755f6d6170203a5d3133 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3133325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037303a35353a3731203032 XMM08=747379733a755f6d65747379733d6a62 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff8180f5bb RBX=ffffffff813ad470 RCX=ffffffff86138e01 RDX=1ffff1100d9e135e RSI=ffffffff8180f5bb RDI=ffff88806cf09b60 RBP=ffff88806cf09b30 RSP=ffff88806cf09a90 R8 =ffffffff86138eb4 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=0000000000020d9c R12=ffff88806cf09b60 R13=0000000000000000 R14=ffff888016f51b40 R15=ffff88800edeab80 RIP=ffffffff813ad474 RFL=00000286 [--S--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 00007f76d6d81900 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=00007ffc6b21c000 CR3=000000000dfa4000 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=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000