syzkaller login: [ 38.671413] BUG: Bad rss-counter state mm:0000000057b7b590 type:MM_FILEPAGES val:33 [ 38.673465] BUG: Bad rss-counter state mm:0000000057b7b590 type:MM_ANONPAGES val:22 [ 38.836549] ================================================================== [ 38.837508] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.838653] Read of size 8 at addr ffff88801699fa50 by task sshd/224 [ 38.839432] [ 38.839650] CPU: 0 PID: 224 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.840509] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.841498] Call Trace: [ 38.841817] [ 38.842099] dump_stack_lvl+0x91/0xf0 [ 38.842623] print_report+0xcc/0x620 [ 38.843105] ? __virt_addr_valid+0x102/0x340 [ 38.843663] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.844281] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.844896] kasan_report+0xbe/0xf0 [ 38.845364] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.845988] vma_interval_tree_remove+0xc75/0xec0 [ 38.846622] vma_prepare+0xc54/0x11a0 [ 38.847112] __split_vma+0x5af/0x950 [ 38.847594] ? __pfx___split_vma+0x10/0x10 [ 38.848134] ? find_held_lock+0x2c/0x110 [ 38.848679] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.849257] ? lock_is_held_type+0x9f/0x120 [ 38.849798] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.850441] ? mtree_range_walk+0x632/0x900 [ 38.851013] ? mas_walk+0x5c7/0x7c0 [ 38.851489] do_vmi_munmap+0x1f1/0x2b0 [ 38.851997] mmap_region+0x1f9/0x2660 [ 38.852491] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.853009] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.853735] ? __pfx_lock_acquire+0x10/0x10 [ 38.854270] ? __pfx_mmap_region+0x10/0x10 [ 38.854833] ? security_mmap_addr+0x7d/0xa0 [ 38.855387] ? get_unmapped_area+0x1f5/0x3f0 [ 38.855936] do_mmap+0x854/0xf00 [ 38.856393] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.856909] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.857498] ksys_mmap_pgoff+0x3af/0x500 [ 38.858033] do_syscall_64+0x3f/0x90 [ 38.858552] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.859226] RIP: 0033:0x7f6bdecd3d82 [ 38.859708] 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 [ 38.861934] RSP: 002b:00007ffc713c2038 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.862876] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6bdecd3d82 [ 38.863732] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f6bde10d000 [ 38.864581] RBP: 00007f6bde10d000 R08: 0000000000000009 R09: 0000000000001000 [ 38.865441] R10: 0000000000000812 R11: 0000000000000206 R12: 000056247ec6aec0 [ 38.866300] R13: 00007ffc713c2050 R14: 00007ffc713c2080 R15: 00007ffc713c23e0 [ 38.867160] [ 38.867477] [ 38.867699] Allocated by task 217: [ 38.868144] kasan_save_stack+0x22/0x50 [ 38.868669] kasan_set_track+0x25/0x30 [ 38.869191] __kasan_slab_alloc+0x59/0x70 [ 38.869742] kmem_cache_alloc+0x16b/0x370 [ 38.870272] vm_area_dup+0x20/0x160 [ 38.870768] __split_vma+0x170/0x950 [ 38.871255] split_vma+0xc6/0x110 [ 38.871722] mprotect_fixup+0x8d2/0xb30 [ 38.872245] do_mprotect_pkey+0x87e/0xd40 [ 38.872797] __x64_sys_mprotect+0x78/0xc0 [ 38.873342] do_syscall_64+0x3f/0x90 [ 38.873843] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.874525] [ 38.874746] Freed by task 217: [ 38.875153] kasan_save_stack+0x22/0x50 [ 38.875680] kasan_set_track+0x25/0x30 [ 38.876196] kasan_save_free_info+0x2b/0x50 [ 38.876751] __kasan_slab_free+0x10a/0x190 [ 38.877305] kmem_cache_free+0x10d/0x4d0 [ 38.877838] rcu_core+0x8c8/0x2860 [ 38.878304] __do_softirq+0x1b7/0x7d4 [ 38.878823] [ 38.879049] Last potentially related work creation: [ 38.879660] kasan_save_stack+0x22/0x50 [ 38.880185] __kasan_record_aux_stack+0x8e/0xa0 [ 38.880784] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.881449] remove_vma+0x139/0x170 [ 38.881915] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.882514] do_vmi_munmap+0x1f1/0x2b0 [ 38.883020] __vm_munmap+0x138/0x3a0 [ 38.883510] __x64_sys_munmap+0x59/0x80 [ 38.884035] do_syscall_64+0x3f/0x90 [ 38.884537] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.885214] [ 38.885439] Second to last potentially related work creation: [ 38.886155] kasan_save_stack+0x22/0x50 [ 38.886683] __kasan_record_aux_stack+0x8e/0xa0 [ 38.887277] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.887959] remove_vma+0x139/0x170 [ 38.888427] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.889009] do_vmi_munmap+0x1f1/0x2b0 [ 38.889513] mmap_region+0x1f9/0x2660 [ 38.890002] do_mmap+0x854/0xf00 [ 38.890479] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.890991] ksys_mmap_pgoff+0x3af/0x500 [ 38.891514] do_syscall_64+0x3f/0x90 [ 38.892012] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.892695] [ 38.892915] The buggy address belongs to the object at ffff88801699f9f8 [ 38.892915] which belongs to the cache vm_area_struct of size 168 [ 38.894468] The buggy address is located 88 bytes inside of [ 38.894468] freed 168-byte region [ffff88801699f9f8, ffff88801699faa0) [ 38.895938] [ 38.896159] The buggy address belongs to the physical page: [ 38.896846] page:000000001741a805 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1699f [ 38.897998] memcg:ffff88801699a001 [ 38.898462] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.899139] page_type: 0xffffffff() [ 38.899609] raw: 0100000000000200 ffff8880087a0c80 ffffea00003f5c80 dead000000000008 [ 38.900574] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801699a001 [ 38.901535] page dumped because: kasan: bad access detected [ 38.902219] [ 38.902455] Memory state around the buggy address: [ 38.903076] ffff88801699f900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.903971] ffff88801699f980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 38.904877] >ffff88801699fa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.905770] ^ [ 38.906529] ffff88801699fa80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 38.907430] ffff88801699fb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.908332] ================================================================== [ 38.909508] Disabling lock debugging due to kernel taint [ 40.964658] BUG: Bad rss-counter state mm:00000000e65fb545 type:MM_FILEPAGES val:33 [ 40.965811] BUG: Bad rss-counter state mm:00000000e65fb545 type:MM_ANONPAGES val:22 [ 41.460662] BUG: Bad rss-counter state mm:0000000049409c3e type:MM_FILEPAGES val:33 [ 41.461772] BUG: Bad rss-counter state mm:0000000049409c3e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:40950' (ECDSA) to the list of known hosts. 2023/06/20 14:53:50 fuzzer started 2023/06/20 14:53:50 dialing manager at localhost:36067 2023/06/20 14:53:50 checking machine... 2023/06/20 14:53:50 checking revisions... [ 42.175934] kmemleak: Automatic memory scanning thread ended 2023/06/20 14:53:50 testing simple program... [ 42.222792] cgroup: Unknown subsys name 'net' [ 42.287205] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:53:49 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88800e434600 RCX=ffffffff8119ceb1 RDX=ffff8880146d9b40 RSI=0000000000000015 RDI=0000000000000028 RBP=0000000000000000 RSP=ffff888015c0f870 R8 =0000000000000004 R9 =00000000000000e9 R10=0000000000000057 R11=0000000000000000 R12=0000000000000015 R13=ffffffff854ee9e0 R14=ffff888015c0fb80 R15=ffff8880146d9b40 RIP=ffffffff814c0408 RFL=00000293 [--S-A-C] 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 00007f2cff9d9900 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=00007f2cfee2cdc0 CR3=000000000c6ba000 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=f53d021d3338b77500000000000ae988 XMM05=811826587b19a0710000000000135520 XMM06=993088549562ad030000000000134310 XMM07=fb795ef6d65770560000000000122ad0 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffffffff84d2ec80 RCX=0000000000000000 RDX=1ffff11003241135 RSI=ffffffff818cc034 RDI=ffffffff813710b9 RBP=ffff8880192088d0 RSP=ffff88800c9a7d38 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3d357 R11=00000000000b6a61 R12=ffff8880192089d8 R13=ffff888019208960 R14=ffff8880192089a8 R15=0000000000000000 RIP=ffffffff814c0864 RFL=00000282 [--S----] 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 00007fad13032900 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=00007ffeb698d000 CR3=000000000e930000 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