[ 24.435706] BUG: Bad rss-counter state mm:00000000278a32dd type:MM_FILEPAGES val:33 [ 24.437769] BUG: Bad rss-counter state mm:00000000278a32dd type:MM_ANONPAGES val:22 [ 24.602258] ================================================================== [ 24.603127] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.604131] Read of size 8 at addr ffff8880164b96b0 by task sshd/219 [ 24.604857] [ 24.605065] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.605875] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.606785] Call Trace: [ 24.607088] [ 24.607356] dump_stack_lvl+0x91/0xf0 [ 24.607820] print_report+0xcc/0x620 [ 24.608288] ? __virt_addr_valid+0x102/0x340 [ 24.608807] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.609386] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.609965] kasan_report+0xbe/0xf0 [ 24.610417] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.611006] vma_interval_tree_remove+0xc75/0xec0 [ 24.611583] vma_prepare+0xc54/0x11a0 [ 24.612065] __split_vma+0x5af/0x950 [ 24.612512] ? __pfx___split_vma+0x10/0x10 [ 24.613016] ? find_held_lock+0x2c/0x110 [ 24.613524] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.614087] ? lock_is_held_type+0x9f/0x120 [ 24.614619] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.615216] ? mtree_range_walk+0x632/0x900 [ 24.615754] ? mas_walk+0x5c7/0x7c0 [ 24.616233] do_vmi_munmap+0x1f1/0x2b0 [ 24.616720] mmap_region+0x1f9/0x2660 [ 24.617192] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.617692] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.618390] ? __pfx_lock_acquire+0x10/0x10 [ 24.618916] ? __pfx_mmap_region+0x10/0x10 [ 24.619438] ? security_mmap_addr+0x7d/0xa0 [ 24.619970] ? get_unmapped_area+0x1f5/0x3f0 [ 24.620534] do_mmap+0x854/0xf00 [ 24.620965] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.621444] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.622007] ksys_mmap_pgoff+0x3af/0x500 [ 24.622505] do_syscall_64+0x3f/0x90 [ 24.622975] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.623604] RIP: 0033:0x7ffab5a6bd82 [ 24.624076] 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 [ 24.626187] RSP: 002b:00007ffebbf3c048 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.627074] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ffab5a6bd82 [ 24.627910] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ffab4ea5000 [ 24.628746] RBP: 00007ffab4ea5000 R08: 0000000000000009 R09: 0000000000001000 [ 24.629578] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c4f0c5eec0 [ 24.630419] R13: 00007ffebbf3c060 R14: 00007ffebbf3c090 R15: 00007ffebbf3c3f0 [ 24.631248] [ 24.631541] [ 24.631756] Allocated by task 212: [ 24.632202] kasan_save_stack+0x22/0x50 [ 24.632695] kasan_set_track+0x25/0x30 [ 24.633181] __kasan_slab_alloc+0x59/0x70 [ 24.633693] kmem_cache_alloc+0x16b/0x370 [ 24.634203] vm_area_dup+0x20/0x160 [ 24.634657] __split_vma+0x170/0x950 [ 24.635120] split_vma+0xc6/0x110 [ 24.635558] mprotect_fixup+0x8d2/0xb30 [ 24.636062] do_mprotect_pkey+0x87e/0xd40 [ 24.636578] __x64_sys_mprotect+0x78/0xc0 [ 24.637095] do_syscall_64+0x3f/0x90 [ 24.637561] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.638195] [ 24.638402] Freed by task 212: [ 24.638790] kasan_save_stack+0x22/0x50 [ 24.639291] kasan_set_track+0x25/0x30 [ 24.639777] kasan_save_free_info+0x2b/0x50 [ 24.640320] __kasan_slab_free+0x10a/0x190 [ 24.640851] kmem_cache_free+0x10d/0x4d0 [ 24.641357] rcu_core+0x8c8/0x2860 [ 24.641802] __do_softirq+0x1b7/0x7d4 [ 24.642276] [ 24.642493] Last potentially related work creation: [ 24.643074] kasan_save_stack+0x22/0x50 [ 24.643566] __kasan_record_aux_stack+0x8e/0xa0 [ 24.644148] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.644777] remove_vma+0x139/0x170 [ 24.645220] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.645768] do_vmi_munmap+0x1f1/0x2b0 [ 24.646253] __vm_munmap+0x138/0x3a0 [ 24.646714] __x64_sys_munmap+0x59/0x80 [ 24.647210] do_syscall_64+0x3f/0x90 [ 24.647686] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.648319] [ 24.648532] Second to last potentially related work creation: [ 24.649212] kasan_save_stack+0x22/0x50 [ 24.649699] __kasan_record_aux_stack+0x8e/0xa0 [ 24.650274] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.650908] remove_vma+0x139/0x170 [ 24.651354] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.651917] do_vmi_munmap+0x1f1/0x2b0 [ 24.652412] mmap_region+0x1f9/0x2660 [ 24.652889] do_mmap+0x854/0xf00 [ 24.653315] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.653799] ksys_mmap_pgoff+0x3af/0x500 [ 24.654299] do_syscall_64+0x3f/0x90 [ 24.654772] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.655407] [ 24.655620] The buggy address belongs to the object at ffff8880164b9658 [ 24.655620] which belongs to the cache vm_area_struct of size 168 [ 24.657030] The buggy address is located 88 bytes inside of [ 24.657030] freed 168-byte region [ffff8880164b9658, ffff8880164b9700) [ 24.658351] [ 24.658555] The buggy address belongs to the physical page: [ 24.659171] page:0000000014dd21c4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x164b9 [ 24.660206] memcg:ffff88800e772e01 [ 24.660610] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.661222] page_type: 0xffffffff() [ 24.661649] raw: 0100000000000200 ffff88800879fc80 ffffea00003d5c40 dead00000000000a [ 24.662507] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e772e01 [ 24.663360] page dumped because: kasan: bad access detected [ 24.663990] [ 24.664202] Memory state around the buggy address: [ 24.664746] ffff8880164b9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.665542] ffff8880164b9600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 24.666344] >ffff8880164b9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.667137] ^ [ 24.667682] ffff8880164b9700: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 24.668490] ffff8880164b9780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 24.669291] ================================================================== [ 24.670416] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.415774] BUG: Bad rss-counter state mm:00000000ae7eed3a type:MM_FILEPAGES val:33 [ 26.416489] BUG: Bad rss-counter state mm:00000000ae7eed3a type:MM_ANONPAGES val:22 [ 26.786814] BUG: Bad rss-counter state mm:00000000e5bbc54a type:MM_FILEPAGES val:33 [ 26.787453] BUG: Bad rss-counter state mm:00000000e5bbc54a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:12265' (ECDSA) to the list of known hosts. 2023/06/20 00:44:10 fuzzer started 2023/06/20 00:44:10 dialing manager at localhost:44161 2023/06/20 00:44:10 checking machine... 2023/06/20 00:44:10 checking revisions... [ 27.353616] kmemleak: Automatic memory scanning thread ended 2023/06/20 00:44:10 testing simple program... [ 27.405304] cgroup: Unknown subsys name 'net' [ 27.439864] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:44:09 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffffff813ad420 RCX=ffffffff812d869a RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=ffff88800ee2f010 RSP=ffff88800ee2efa8 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=ffff88800ee2f080 R13=0000000000000000 R14=ffff888015c19b40 R15=0000000000092800 RIP=ffffffff8113036f RFL=00000246 [---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 00007f359d66e900 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=00007f359d64d020 CR3=00000000146de000 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=00000000000000000000000000000000 XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffff88806cf35000 RCX=ffffffff812d8ec3 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=0000000000000000 RSP=ffff88806cf09be0 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000000 R12=0000000000000002 R13=0000000000000000 R14=ffffffff8560b640 R15=0000000000000000 RIP=ffffffff8135b930 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 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=00007f21f96a5ca0 CR3=000000001a056000 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=2030313a34343a3030203032206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039303a34343a3030203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000