syzkaller login: [ 30.547978] BUG: Bad rss-counter state mm:00000000a6743810 type:MM_FILEPAGES val:33 [ 30.549364] BUG: Bad rss-counter state mm:00000000a6743810 type:MM_ANONPAGES val:22 [ 30.707993] ================================================================== [ 30.709151] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.710182] Read of size 8 at addr ffff88800fcaa5c8 by task sshd/220 [ 30.711091] [ 30.711313] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.712193] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.713203] Call Trace: [ 30.713533] [ 30.713827] dump_stack_lvl+0x91/0xf0 [ 30.714326] print_report+0xcc/0x620 [ 30.714860] ? __virt_addr_valid+0x102/0x340 [ 30.715422] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.716117] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.716755] kasan_report+0xbe/0xf0 [ 30.717242] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.717883] vma_interval_tree_remove+0xc75/0xec0 [ 30.718501] vma_prepare+0xc54/0x11a0 [ 30.718985] __split_vma+0x5af/0x950 [ 30.719465] ? __pfx___split_vma+0x10/0x10 [ 30.719999] ? find_held_lock+0x2c/0x110 [ 30.720535] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.721169] ? lock_is_held_type+0x9f/0x120 [ 30.721768] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.722420] ? mtree_range_walk+0x632/0x900 [ 30.722989] ? mas_walk+0x5c7/0x7c0 [ 30.723475] do_vmi_munmap+0x1f1/0x2b0 [ 30.724003] mmap_region+0x1f9/0x2660 [ 30.724501] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.725104] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.725845] ? __pfx_lock_acquire+0x10/0x10 [ 30.726389] ? __pfx_mmap_region+0x10/0x10 [ 30.726924] ? security_mmap_addr+0x7d/0xa0 [ 30.727468] ? get_unmapped_area+0x1f5/0x3f0 [ 30.728080] do_mmap+0x854/0xf00 [ 30.728546] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.729122] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.729702] ksys_mmap_pgoff+0x3af/0x500 [ 30.730220] do_syscall_64+0x3f/0x90 [ 30.730708] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.731377] RIP: 0033:0x7fe4dd551d82 [ 30.731853] 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 [ 30.734045] RSP: 002b:00007ffe52e3b6a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.734981] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe4dd551d82 [ 30.735894] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe4dc98b000 [ 30.736809] RBP: 00007fe4dc98b000 R08: 0000000000000009 R09: 0000000000001000 [ 30.737701] R10: 0000000000000812 R11: 0000000000000206 R12: 00005559e3259ec0 [ 30.738590] R13: 00007ffe52e3b6c0 R14: 00007ffe52e3b6f0 R15: 00007ffe52e3ba50 [ 30.739499] [ 30.739843] [ 30.740087] Allocated by task 213: [ 30.740523] kasan_save_stack+0x22/0x50 [ 30.741047] kasan_set_track+0x25/0x30 [ 30.741548] __kasan_slab_alloc+0x59/0x70 [ 30.742093] kmem_cache_alloc+0x16b/0x370 [ 30.742634] vm_area_dup+0x20/0x160 [ 30.743123] __split_vma+0x170/0x950 [ 30.743612] split_vma+0xc6/0x110 [ 30.744120] mprotect_fixup+0x8d2/0xb30 [ 30.744635] do_mprotect_pkey+0x87e/0xd40 [ 30.745189] __x64_sys_mprotect+0x78/0xc0 [ 30.745723] do_syscall_64+0x3f/0x90 [ 30.746213] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.746916] [ 30.747136] Freed by task 213: [ 30.747538] kasan_save_stack+0x22/0x50 [ 30.748116] kasan_set_track+0x25/0x30 [ 30.748616] kasan_save_free_info+0x2b/0x50 [ 30.749175] __kasan_slab_free+0x10a/0x190 [ 30.749738] kmem_cache_free+0x10d/0x4d0 [ 30.750247] rcu_core+0x8c8/0x2860 [ 30.750724] __do_softirq+0x1b7/0x7d4 [ 30.751227] [ 30.751457] Last potentially related work creation: [ 30.752137] kasan_save_stack+0x22/0x50 [ 30.752653] __kasan_record_aux_stack+0x8e/0xa0 [ 30.753258] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.753912] remove_vma+0x139/0x170 [ 30.754373] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.754946] do_vmi_munmap+0x1f1/0x2b0 [ 30.755439] __vm_munmap+0x138/0x3a0 [ 30.755962] __x64_sys_munmap+0x59/0x80 [ 30.756472] do_syscall_64+0x3f/0x90 [ 30.757041] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.757704] [ 30.757924] Second to last potentially related work creation: [ 30.758624] kasan_save_stack+0x22/0x50 [ 30.759136] __kasan_record_aux_stack+0x8e/0xa0 [ 30.759753] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.760415] remove_vma+0x139/0x170 [ 30.760933] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.761519] do_vmi_munmap+0x1f1/0x2b0 [ 30.762021] mmap_region+0x1f9/0x2660 [ 30.762505] do_mmap+0x854/0xf00 [ 30.762940] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.763459] ksys_mmap_pgoff+0x3af/0x500 [ 30.763991] do_syscall_64+0x3f/0x90 [ 30.764511] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.765182] [ 30.765400] The buggy address belongs to the object at ffff88800fcaa570 [ 30.765400] which belongs to the cache vm_area_struct of size 168 [ 30.766941] The buggy address is located 88 bytes inside of [ 30.766941] freed 168-byte region [ffff88800fcaa570, ffff88800fcaa618) [ 30.768462] [ 30.768689] The buggy address belongs to the physical page: [ 30.769377] page:0000000001809be2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfcaa [ 30.770499] memcg:ffff888019ec3d01 [ 30.770951] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.771617] page_type: 0xffffffff() [ 30.772078] raw: 0100000000000200 ffff8880087a0c80 ffffea000057c980 dead000000000008 [ 30.773091] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019ec3d01 [ 30.774048] page dumped because: kasan: bad access detected [ 30.774743] [ 30.774964] Memory state around the buggy address: [ 30.775581] ffff88800fcaa480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.776514] ffff88800fcaa500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.777465] >ffff88800fcaa580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.778339] ^ [ 30.779018] ffff88800fcaa600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 [ 30.779959] ffff88800fcaa680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.780889] ================================================================== [ 30.781917] Disabling lock debugging due to kernel taint [ 32.665717] BUG: Bad rss-counter state mm:00000000d1ff52a7 type:MM_FILEPAGES val:33 [ 32.667093] BUG: Bad rss-counter state mm:00000000d1ff52a7 type:MM_ANONPAGES val:22 [ 33.140498] BUG: Bad rss-counter state mm:000000009df72dc2 type:MM_FILEPAGES val:33 [ 33.141512] BUG: Bad rss-counter state mm:000000009df72dc2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:3716' (ECDSA) to the list of known hosts. 2023/06/20 14:40:41 fuzzer started 2023/06/20 14:40:41 dialing manager at localhost:36067 2023/06/20 14:40:41 checking machine... 2023/06/20 14:40:41 checking revisions... [ 33.837599] kmemleak: Automatic memory scanning thread ended 2023/06/20 14:40:42 testing simple program... [ 33.893579] cgroup: Unknown subsys name 'net' [ 33.964248] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:40:41 Registers: info registers vcpu 0 RAX=ffff88800f00fd58 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff88800f00fc01 RSI=ffff88800f00fce0 RDI=ffff88800f00fce0 RBP=ffff88800f00fae8 RSP=ffff88800f00fa18 R8 =0000000000000001 R9 =ffff88800f00fad0 R10=0000000000038001 R11=0000000000021eef R12=ffff88800f00faf0 R13=ffff88800f00fad8 R14=ffff88800f00fce0 R15=ffff88800f00fa90 RIP=ffffffff8112fbf3 RFL=00000202 [-------] 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 00007fbdf5da3900 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=00007ffc01876000 CR3=00000000090f4000 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=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 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 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 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=00007fb2cf9c6090 CR3=00000000095cc000 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=45cc07f589b8c2ab18458e99e62569a3 XMM02=000000000011a510ec2efd57dc4c00df XMM03=00000000001219b0496ce8569c7cc51a XMM04=ca24839740c7717800000000000ae988 XMM05=19e9129bd510f2350000000000132bd8 XMM06=4fda316b135da52b0000000000132a60 XMM07=e042d86d42eb936e0000000000121c30 XMM08=496ce8569c7cc51a000000000011a570 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000