[ 26.425143] BUG: Bad rss-counter state mm:0000000074c0d999 type:MM_FILEPAGES val:33 [ 26.426407] BUG: Bad rss-counter state mm:0000000074c0d999 type:MM_ANONPAGES val:22 [ 26.582470] ================================================================== [ 26.583390] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 26.584319] Read of size 8 at addr ffff888009a07c20 by task sshd/220 [ 26.585082] [ 26.585300] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 26.586268] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.587245] Call Trace: [ 26.587568] [ 26.587855] dump_stack_lvl+0x91/0xf0 [ 26.588536] print_report+0xcc/0x620 [ 26.589141] ? __virt_addr_valid+0x102/0x340 [ 26.589790] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.590516] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.591252] kasan_report+0xbe/0xf0 [ 26.591837] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.592580] vma_interval_tree_remove+0xc75/0xec0 [ 26.593326] vma_prepare+0xc54/0x11a0 [ 26.593913] __split_vma+0x5af/0x950 [ 26.594485] ? __pfx___split_vma+0x10/0x10 [ 26.595130] ? find_held_lock+0x2c/0x110 [ 26.595760] do_vmi_align_munmap+0x2ba/0x11f0 [ 26.596442] ? lock_is_held_type+0x9f/0x120 [ 26.597120] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.597764] ? mtree_range_walk+0x632/0x900 [ 26.598321] ? mas_walk+0x5c7/0x7c0 [ 26.598803] do_vmi_munmap+0x1f1/0x2b0 [ 26.599298] mmap_region+0x1f9/0x2660 [ 26.599781] ? vm_mmap_pgoff+0x15c/0x3a0 [ 26.600301] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.601022] ? __pfx_lock_acquire+0x10/0x10 [ 26.601558] ? __pfx_mmap_region+0x10/0x10 [ 26.602092] ? security_mmap_addr+0x7d/0xa0 [ 26.602624] ? get_unmapped_area+0x1f5/0x3f0 [ 26.603177] do_mmap+0x854/0xf00 [ 26.603614] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.604127] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.604701] ksys_mmap_pgoff+0x3af/0x500 [ 26.605217] do_syscall_64+0x3f/0x90 [ 26.605697] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.606344] RIP: 0033:0x7f50f315fd82 [ 26.606803] 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 [ 26.608963] RSP: 002b:00007ffec3ba9c48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.609868] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f50f315fd82 [ 26.610718] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f50f2599000 [ 26.611562] RBP: 00007f50f2599000 R08: 0000000000000009 R09: 0000000000001000 [ 26.612413] R10: 0000000000000812 R11: 0000000000000206 R12: 0000563812ea0f70 [ 26.613267] R13: 00007ffec3ba9c60 R14: 00007ffec3ba9c90 R15: 00007ffec3ba9ff0 [ 26.614125] [ 26.614417] [ 26.614635] Allocated by task 213: [ 26.615063] kasan_save_stack+0x22/0x50 [ 26.615566] kasan_set_track+0x25/0x30 [ 26.616056] __kasan_slab_alloc+0x59/0x70 [ 26.616581] kmem_cache_alloc+0x16b/0x370 [ 26.617121] vm_area_dup+0x20/0x160 [ 26.617605] __split_vma+0x170/0x950 [ 26.618180] split_vma+0xc6/0x110 [ 26.618626] mprotect_fixup+0x8d2/0xb30 [ 26.619130] do_mprotect_pkey+0x87e/0xd40 [ 26.619648] __x64_sys_mprotect+0x78/0xc0 [ 26.620166] do_syscall_64+0x3f/0x90 [ 26.620648] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.621288] [ 26.621504] Freed by task 213: [ 26.621899] kasan_save_stack+0x22/0x50 [ 26.622401] kasan_set_track+0x25/0x30 [ 26.622894] kasan_save_free_info+0x2b/0x50 [ 26.623424] __kasan_slab_free+0x10a/0x190 [ 26.623958] kmem_cache_free+0x10d/0x4d0 [ 26.624465] rcu_core+0x8c8/0x2860 [ 26.624928] __do_softirq+0x1b7/0x7d4 [ 26.625400] [ 26.625615] Last potentially related work creation: [ 26.626202] kasan_save_stack+0x22/0x50 [ 26.626712] __kasan_record_aux_stack+0x8e/0xa0 [ 26.627289] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.627942] remove_vma+0x139/0x170 [ 26.628397] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.628976] do_vmi_munmap+0x1f1/0x2b0 [ 26.629460] __vm_munmap+0x138/0x3a0 [ 26.629931] __x64_sys_munmap+0x59/0x80 [ 26.630425] do_syscall_64+0x3f/0x90 [ 26.630902] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.631548] [ 26.631765] Second to last potentially related work creation: [ 26.632455] kasan_save_stack+0x22/0x50 [ 26.632969] __kasan_record_aux_stack+0x8e/0xa0 [ 26.633538] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.634175] remove_vma+0x139/0x170 [ 26.634631] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.635184] do_vmi_munmap+0x1f1/0x2b0 [ 26.635667] mmap_region+0x1f9/0x2660 [ 26.636145] do_mmap+0x854/0xf00 [ 26.636572] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.637074] ksys_mmap_pgoff+0x3af/0x500 [ 26.637575] do_syscall_64+0x3f/0x90 [ 26.638047] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.638691] [ 26.638907] The buggy address belongs to the object at ffff888009a07bc8 [ 26.638907] which belongs to the cache vm_area_struct of size 168 [ 26.640372] The buggy address is located 88 bytes inside of [ 26.640372] freed 168-byte region [ffff888009a07bc8, ffff888009a07c70) [ 26.641773] [ 26.641990] The buggy address belongs to the physical page: [ 26.642644] page:00000000372068d3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9a07 [ 26.643723] memcg:ffff88800f1fc401 [ 26.644158] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 26.644873] page_type: 0xffffffff() [ 26.645325] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 26.646249] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f1fc401 [ 26.647154] page dumped because: kasan: bad access detected [ 26.647814] [ 26.648030] Memory state around the buggy address: [ 26.648636] ffff888009a07b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 26.649496] ffff888009a07b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 26.650344] >ffff888009a07c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 26.651210] ^ [ 26.651736] ffff888009a07c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 26.652592] ffff888009a07d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 26.653457] ================================================================== [ 26.654523] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 28.514792] BUG: Bad rss-counter state mm:0000000080dd850a type:MM_FILEPAGES val:33 [ 28.516000] BUG: Bad rss-counter state mm:0000000080dd850a type:MM_ANONPAGES val:22 [ 29.026626] BUG: Bad rss-counter state mm:00000000b4ddb62a type:MM_FILEPAGES val:33 [ 29.027788] BUG: Bad rss-counter state mm:00000000b4ddb62a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:21231' (ECDSA) to the list of known hosts. 2023/06/19 23:00:22 fuzzer started 2023/06/19 23:00:22 dialing manager at localhost:44161 2023/06/19 23:00:22 checking machine... 2023/06/19 23:00:22 checking revisions... [ 29.665477] kmemleak: Automatic memory scanning thread ended 2023/06/19 23:00:22 testing simple program... [ 29.710562] cgroup: Unknown subsys name 'net' [ 29.759473] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:00:19 Registers: info registers vcpu 0 RAX=ffff888019f4f4a0 RBX=ffffffff85d3d00c RCX=ffffffff812bdeb6 RDX=0000000000000001 RSI=0000000000000008 RDI=ffff888019f4f4a0 RBP=ffff888019f4f4a0 RSP=ffff888019bdfd48 R8 =0000000000000001 R9 =ffffed10033e9e95 R10=ffff888019f4f4af R11=00000000000b6996 R12=ffff888019f4f4a8 R13=ffff888019f4f508 R14=0000000000000000 R15=ffff88800ea55d00 RIP=ffffffff8180eeb2 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 00007f3591a02900 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=00007ffd0f4f2000 CR3=000000001836e000 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=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007f9c6d349270 CR3=000000000ca32000 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=2c5bf5222eb90a855a4ed95471993b7c XMM02=ec2efd57dc4c00df000000000011c7b8 XMM03=4ca7d9ea335610a3000000000011c888 XMM04=6513aa808cbd35cf00000000000ae988 XMM05=19e9129bd510f23500000000001345f8 XMM06=1cc839378a5107a700000000001337d0 XMM07=e042d86d42eb936e0000000000123d58 XMM08=4ca7d9ea335610a3000000000011c888 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000