[ 36.742545] BUG: Bad rss-counter state mm:0000000063148280 type:MM_FILEPAGES val:33 [ 36.743632] BUG: Bad rss-counter state mm:0000000063148280 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 37.221732] ================================================================== [ 37.222670] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 37.223619] Read of size 8 at addr ffff88801a307b38 by task sshd/219 [ 37.224388] [ 37.224605] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 37.225518] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 37.226496] Call Trace: [ 37.226859] [ 37.227143] dump_stack_lvl+0x91/0xf0 [ 37.227635] print_report+0xcc/0x620 [ 37.228122] ? __virt_addr_valid+0x102/0x340 [ 37.228669] ? vma_interval_tree_remove+0xc75/0xec0 [ 37.229292] ? vma_interval_tree_remove+0xc75/0xec0 [ 37.229912] kasan_report+0xbe/0xf0 [ 37.230390] ? vma_interval_tree_remove+0xc75/0xec0 [ 37.231021] vma_interval_tree_remove+0xc75/0xec0 [ 37.231631] vma_prepare+0xc54/0x11a0 [ 37.232109] __split_vma+0x5af/0x950 [ 37.232580] ? __pfx___split_vma+0x10/0x10 [ 37.233114] ? find_held_lock+0x2c/0x110 [ 37.233634] do_vmi_align_munmap+0x2ba/0x11f0 [ 37.234201] ? lock_is_held_type+0x9f/0x120 [ 37.234755] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 37.235369] ? mtree_range_walk+0x632/0x900 [ 37.235918] ? mas_walk+0x5c7/0x7c0 [ 37.236396] do_vmi_munmap+0x1f1/0x2b0 [ 37.236891] mmap_region+0x1f9/0x2660 [ 37.237381] ? vm_mmap_pgoff+0x15c/0x3a0 [ 37.237898] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 37.238627] ? __pfx_lock_acquire+0x10/0x10 [ 37.239161] ? __pfx_mmap_region+0x10/0x10 [ 37.239693] ? security_mmap_addr+0x7d/0xa0 [ 37.240238] ? get_unmapped_area+0x1f5/0x3f0 [ 37.240800] do_mmap+0x854/0xf00 [ 37.241248] vm_mmap_pgoff+0x1a6/0x3a0 [ 37.241747] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 37.242315] ksys_mmap_pgoff+0x3af/0x500 [ 37.242832] do_syscall_64+0x3f/0x90 [ 37.243319] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 37.243971] RIP: 0033:0x7fa6f2fc5d82 [ 37.244433] 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 [ 37.246575] RSP: 002b:00007ffc2c991fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 37.247494] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa6f2fc5d82 [ 37.248347] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa6f23ff000 [ 37.249199] RBP: 00007fa6f23ff000 R08: 0000000000000009 R09: 0000000000001000 [ 37.250051] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a3e7673f60 [ 37.250904] R13: 00007ffc2c991ff0 R14: 00007ffc2c992020 R15: 00007ffc2c992380 [ 37.251771] [ 37.252063] [ 37.252289] Allocated by task 205: [ 37.252725] kasan_save_stack+0x22/0x50 [ 37.253239] kasan_set_track+0x25/0x30 [ 37.253732] __kasan_slab_alloc+0x59/0x70 [ 37.254268] kmem_cache_alloc+0x16b/0x370 [ 37.254805] vm_area_dup+0x20/0x160 [ 37.255262] __split_vma+0x170/0x950 [ 37.255731] split_vma+0xc6/0x110 [ 37.256180] mprotect_fixup+0x8d2/0xb30 [ 37.256687] do_mprotect_pkey+0x87e/0xd40 [ 37.257213] __x64_sys_mprotect+0x78/0xc0 [ 37.257740] do_syscall_64+0x3f/0x90 [ 37.258209] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 37.258847] [ 37.259064] Freed by task 203: [ 37.259468] kasan_save_stack+0x22/0x50 [ 37.259986] kasan_set_track+0x25/0x30 [ 37.260484] kasan_save_free_info+0x2b/0x50 [ 37.261018] __kasan_slab_free+0x10a/0x190 [ 37.261553] kmem_cache_free+0x10d/0x4d0 [ 37.262068] rcu_core+0x8c8/0x2860 [ 37.262534] __do_softirq+0x1b7/0x7d4 [ 37.263024] [ 37.263238] Last potentially related work creation: [ 37.263833] kasan_save_stack+0x22/0x50 [ 37.264351] __kasan_record_aux_stack+0x8e/0xa0 [ 37.264944] __call_rcu_common.constprop.0+0x6a/0xb90 [ 37.265593] remove_vma+0x139/0x170 [ 37.266053] do_vmi_align_munmap+0xd4a/0x11f0 [ 37.266632] do_vmi_munmap+0x1f1/0x2b0 [ 37.267129] __vm_munmap+0x138/0x3a0 [ 37.267604] __x64_sys_munmap+0x59/0x80 [ 37.268104] do_syscall_64+0x3f/0x90 [ 37.268585] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 37.269230] [ 37.269445] The buggy address belongs to the object at ffff88801a307ae0 [ 37.269445] which belongs to the cache vm_area_struct of size 168 [ 37.270933] The buggy address is located 88 bytes inside of [ 37.270933] freed 168-byte region [ffff88801a307ae0, ffff88801a307b88) [ 37.272333] [ 37.272548] The buggy address belongs to the physical page: [ 37.273202] page:00000000b8d47c9f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a307 [ 37.274310] memcg:ffff88801a308001 [ 37.274756] flags: 0x100000000000200(slab|node=0|zone=1) [ 37.275397] page_type: 0xffffffff() [ 37.275849] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 37.276773] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a308001 [ 37.277689] page dumped because: kasan: bad access detected [ 37.278353] [ 37.278574] Memory state around the buggy address: [ 37.279152] ffff88801a307a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 37.280002] ffff88801a307a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 37.280863] >ffff88801a307b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.281735] ^ [ 37.282363] ffff88801a307b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 37.283240] ffff88801a307c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 37.284099] ================================================================== [ 37.285508] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 39.258825] BUG: Bad rss-counter state mm:000000006f13e359 type:MM_FILEPAGES val:33 [ 39.260004] BUG: Bad rss-counter state mm:000000006f13e359 type:MM_ANONPAGES val:22 [ 39.634350] BUG: Bad rss-counter state mm:000000005f8e38c8 type:MM_FILEPAGES val:33 [ 39.635560] BUG: Bad rss-counter state mm:000000005f8e38c8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:52492' (ECDSA) to the list of known hosts. 2023/06/19 21:49:24 fuzzer started 2023/06/19 21:49:24 dialing manager at localhost:44161 2023/06/19 21:49:25 checking machine... 2023/06/19 21:49:25 checking revisions... [ 40.383919] kmemleak: Automatic memory scanning thread ended 2023/06/19 21:49:25 testing simple program... [ 40.430241] cgroup: Unknown subsys name 'net' [ 40.485734] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 21:49:11 Registers: info registers vcpu 0 RAX=ffff7fffffffffff RBX=0000000000000000 RCX=ffffffff812d869a RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=1ffff1100d9c1329 RSP=ffff88806ce09918 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=00000000000b6996 R12=ffffffff8560b640 R13=ffffffff814c84f5 R14=ffffffff85652988 R15=ffff88801a1d7da8 RIP=ffffffff8180eef9 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 00007fb69c57a900 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=00007fed48e28650 CR3=0000000013a10000 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=5305f274c92f50e200000000000ae988 XMM05=ca4a7e533e5909810000000000134b20 XMM06=c65ab9a86852ea580000000000133550 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=000000000000000a RBX=0000564bc4df2bf0 RCX=0000000000000030 RDX=0000564bc4dec3b0 RSI=0000000000000007 RDI=0000564bc4dec3b0 RBP=0000000000000000 RSP=00007ffe4ba48c68 R8 =00007fed493a2983 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000297 R12=0000000000000008 R13=0000564bc4dcf350 R14=0000000000000030 R15=0000564bc4def640 RIP=00007fed48dc6acf RFL=00000202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fed48873900 00000000 00000000 GS =0000 0000000000000000 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=00007fed48e2b0b0 CR3=000000000e9a2000 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=ffffff0000ff00000000000000000000 XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=662079726f6d656d20666f2074756f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000