[ 24.071300] BUG: Bad rss-counter state mm:0000000099e8fb2b type:MM_FILEPAGES val:33 [ 24.073063] BUG: Bad rss-counter state mm:0000000099e8fb2b type:MM_ANONPAGES val:22 [ 24.229746] ================================================================== [ 24.230841] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.231965] Read of size 8 at addr ffff88801b856228 by task sshd/219 [ 24.233028] [ 24.233300] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.234305] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.235436] Call Trace: [ 24.235765] [ 24.236050] dump_stack_lvl+0x91/0xf0 [ 24.236556] print_report+0xcc/0x620 [ 24.237047] ? __virt_addr_valid+0x102/0x340 [ 24.237602] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.238224] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.238844] kasan_report+0xbe/0xf0 [ 24.239328] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.239955] vma_interval_tree_remove+0xc75/0xec0 [ 24.240562] vma_prepare+0xc54/0x11a0 [ 24.241048] __split_vma+0x5af/0x950 [ 24.241531] ? __pfx___split_vma+0x10/0x10 [ 24.242062] ? find_held_lock+0x2c/0x110 [ 24.242594] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.243170] ? lock_is_held_type+0x9f/0x120 [ 24.243742] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.244354] ? mtree_range_walk+0x632/0x900 [ 24.244907] ? mas_walk+0x5c7/0x7c0 [ 24.245395] do_vmi_munmap+0x1f1/0x2b0 [ 24.245898] mmap_region+0x1f9/0x2660 [ 24.246388] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.246900] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.247637] ? __pfx_lock_acquire+0x10/0x10 [ 24.248182] ? __pfx_mmap_region+0x10/0x10 [ 24.248721] ? security_mmap_addr+0x7d/0xa0 [ 24.249252] ? get_unmapped_area+0x1f5/0x3f0 [ 24.249798] do_mmap+0x854/0xf00 [ 24.250249] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.250749] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.251319] ksys_mmap_pgoff+0x3af/0x500 [ 24.251857] do_syscall_64+0x3f/0x90 [ 24.252337] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.252984] RIP: 0033:0x7fd1b8704d82 [ 24.253447] 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 [ 24.255611] RSP: 002b:00007ffe09e1ca48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.256527] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd1b8704d82 [ 24.257375] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd1b7b3e000 [ 24.258244] RBP: 00007fd1b7b3e000 R08: 0000000000000009 R09: 0000000000001000 [ 24.259102] R10: 0000000000000812 R11: 0000000000000206 R12: 000055af8a517f70 [ 24.259956] R13: 00007ffe09e1ca60 R14: 00007ffe09e1ca90 R15: 00007ffe09e1cdf0 [ 24.260812] [ 24.261110] [ 24.261328] Allocated by task 210: [ 24.261753] kasan_save_stack+0x22/0x50 [ 24.262260] kasan_set_track+0x25/0x30 [ 24.262760] __kasan_slab_alloc+0x59/0x70 [ 24.263289] kmem_cache_alloc+0x16b/0x370 [ 24.263837] vm_area_dup+0x20/0x160 [ 24.264292] __split_vma+0x170/0x950 [ 24.264764] split_vma+0xc6/0x110 [ 24.265206] mprotect_fixup+0x8d2/0xb30 [ 24.265712] do_mprotect_pkey+0x87e/0xd40 [ 24.266236] __x64_sys_mprotect+0x78/0xc0 [ 24.266752] do_syscall_64+0x3f/0x90 [ 24.267229] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.267882] [ 24.268101] Freed by task 203: [ 24.268503] kasan_save_stack+0x22/0x50 [ 24.269004] kasan_set_track+0x25/0x30 [ 24.269502] kasan_save_free_info+0x2b/0x50 [ 24.270036] __kasan_slab_free+0x10a/0x190 [ 24.270573] kmem_cache_free+0x10d/0x4d0 [ 24.271082] rcu_core+0x8c8/0x2860 [ 24.271540] __do_softirq+0x1b7/0x7d4 [ 24.272022] [ 24.272240] Last potentially related work creation: [ 24.272823] kasan_save_stack+0x22/0x50 [ 24.273329] __kasan_record_aux_stack+0x8e/0xa0 [ 24.273997] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.274636] remove_vma+0x139/0x170 [ 24.275087] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.275677] do_vmi_munmap+0x1f1/0x2b0 [ 24.276167] __vm_munmap+0x138/0x3a0 [ 24.276640] __x64_sys_munmap+0x59/0x80 [ 24.277144] do_syscall_64+0x3f/0x90 [ 24.277619] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.278259] [ 24.278474] The buggy address belongs to the object at ffff88801b8561d0 [ 24.278474] which belongs to the cache vm_area_struct of size 168 [ 24.279968] The buggy address is located 88 bytes inside of [ 24.279968] freed 168-byte region [ffff88801b8561d0, ffff88801b856278) [ 24.281389] [ 24.281604] The buggy address belongs to the physical page: [ 24.282284] page:0000000091787a19 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b856 [ 24.283386] memcg:ffff88801b844301 [ 24.283834] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.284486] page_type: 0xffffffff() [ 24.284935] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 24.285866] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801b844301 [ 24.286773] page dumped because: kasan: bad access detected [ 24.287432] [ 24.287655] Memory state around the buggy address: [ 24.288238] ffff88801b856100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.289104] ffff88801b856180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 24.289975] >ffff88801b856200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 24.290821] ^ [ 24.291394] ffff88801b856280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 24.292269] ffff88801b856300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 24.293137] ================================================================== [ 24.294053] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.314236] BUG: Bad rss-counter state mm:00000000fbbeaf70 type:MM_FILEPAGES val:33 [ 26.315819] BUG: Bad rss-counter state mm:00000000fbbeaf70 type:MM_ANONPAGES val:22 [ 26.800517] BUG: Bad rss-counter state mm:000000001e542fd1 type:MM_FILEPAGES val:33 [ 26.801678] BUG: Bad rss-counter state mm:000000001e542fd1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:19519' (ECDSA) to the list of known hosts. 2023/06/20 16:10:46 fuzzer started 2023/06/20 16:10:47 dialing manager at localhost:36067 2023/06/20 16:10:47 checking machine... 2023/06/20 16:10:47 checking revisions... [ 27.530437] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:10:47 testing simple program... [ 27.584877] cgroup: Unknown subsys name 'net' [ 27.627924] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:10:46 Registers: info registers vcpu 0 RAX=ffffed1002cf6873 RBX=ffffed1002cf6874 RCX=ffffffff8182e41e RDX=ffffed1002cf6874 RSI=0000000000000004 RDI=ffff8880167b4398 RBP=ffffed1002cf6873 RSP=ffff888014357968 R8 =0000000000000001 R9 =ffffed1002cf6873 R10=ffff8880167b439b R11=0000000000000000 R12=ffff8880167b4380 R13=0000000000000000 R14=0000000000000ea0 R15=ffff88806ce361f0 RIP=ffffffff8180f189 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 00007f3a1a67e900 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=00007f3a19aa2560 CR3=000000000946a000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=2456eb10f47b416900000000000ae988 XMM05=61e4642e3b479cb800000000001326c0 XMM06=806171799158d9670000000000131140 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffffff0c09d7d RBX=ffffffff8604ebe8 RCX=ffffffff8450cc7e RDX=0000000000000000 RSI=ffffffff864b2008 RDI=ffffffff8604ebc4 RBP=ffffffff8604ebe0 RSP=ffff88801ca6f8d0 R8 =ffffffff864b2008 R9 =ffff88801ca6f9c8 R10=0000000000038001 R11=00000000000b5080 R12=ffffffff8604ebf4 R13=ffffffff8604ebc4 R14=ffffffff8604ebdc R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000216 [----AP-] 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 00007fa03039e900 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=00007ffedef46000 CR3=000000000f2ca000 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