[ 29.051218] BUG: Bad rss-counter state mm:000000001a83e6e5 type:MM_FILEPAGES val:33 [ 29.052184] BUG: Bad rss-counter state mm:000000001a83e6e5 type:MM_ANONPAGES val:22 [ 29.213719] ================================================================== [ 29.214635] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.215573] Read of size 8 at addr ffff88801a0ca798 by task sshd/221 [ 29.216344] [ 29.216561] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 29.217467] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.218433] Call Trace: [ 29.218748] [ 29.219035] dump_stack_lvl+0x91/0xf0 [ 29.219526] print_report+0xcc/0x620 [ 29.220011] ? __virt_addr_valid+0x102/0x340 [ 29.220559] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.221170] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.221809] kasan_report+0xbe/0xf0 [ 29.222288] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.222925] vma_interval_tree_remove+0xc75/0xec0 [ 29.223526] vma_prepare+0xc54/0x11a0 [ 29.224002] __split_vma+0x5af/0x950 [ 29.224473] ? __pfx___split_vma+0x10/0x10 [ 29.225005] ? find_held_lock+0x2c/0x110 [ 29.225539] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.226099] ? lock_is_held_type+0x9f/0x120 [ 29.226635] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.227247] ? mtree_range_walk+0x632/0x900 [ 29.227800] ? mas_walk+0x5c7/0x7c0 [ 29.228274] do_vmi_munmap+0x1f1/0x2b0 [ 29.228768] mmap_region+0x1f9/0x2660 [ 29.229249] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.229790] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.230500] ? __pfx_lock_acquire+0x10/0x10 [ 29.231031] ? __pfx_mmap_region+0x10/0x10 [ 29.231564] ? security_mmap_addr+0x7d/0xa0 [ 29.232094] ? get_unmapped_area+0x1f5/0x3f0 [ 29.232643] do_mmap+0x854/0xf00 [ 29.233085] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.233583] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.234144] ksys_mmap_pgoff+0x3af/0x500 [ 29.234660] do_syscall_64+0x3f/0x90 [ 29.235150] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.235798] RIP: 0033:0x7f347a04fd82 [ 29.236261] 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 [ 29.238368] RSP: 002b:00007ffe09e498e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.239266] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f347a04fd82 [ 29.240111] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3479489000 [ 29.240952] RBP: 00007f3479489000 R08: 0000000000000009 R09: 0000000000001000 [ 29.241818] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562284b4bd90 [ 29.242653] R13: 00007ffe09e49900 R14: 00007ffe09e49930 R15: 00007ffe09e49c90 [ 29.243497] [ 29.243787] [ 29.244005] Allocated by task 214: [ 29.244435] kasan_save_stack+0x22/0x50 [ 29.244937] kasan_set_track+0x25/0x30 [ 29.245434] __kasan_slab_alloc+0x59/0x70 [ 29.245955] kmem_cache_alloc+0x16b/0x370 [ 29.246475] vm_area_dup+0x20/0x160 [ 29.246927] __split_vma+0x170/0x950 [ 29.247394] split_vma+0xc6/0x110 [ 29.247834] mprotect_fixup+0x8d2/0xb30 [ 29.248333] do_mprotect_pkey+0x87e/0xd40 [ 29.248847] __x64_sys_mprotect+0x78/0xc0 [ 29.249384] do_syscall_64+0x3f/0x90 [ 29.249862] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.250500] [ 29.250716] Freed by task 214: [ 29.251109] kasan_save_stack+0x22/0x50 [ 29.251613] kasan_set_track+0x25/0x30 [ 29.252115] kasan_save_free_info+0x2b/0x50 [ 29.252639] __kasan_slab_free+0x10a/0x190 [ 29.253172] kmem_cache_free+0x10d/0x4d0 [ 29.253706] rcu_core+0x8c8/0x2860 [ 29.254166] __do_softirq+0x1b7/0x7d4 [ 29.254646] [ 29.254862] Last potentially related work creation: [ 29.255449] kasan_save_stack+0x22/0x50 [ 29.255964] __kasan_record_aux_stack+0x8e/0xa0 [ 29.256538] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.257187] remove_vma+0x139/0x170 [ 29.257658] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.258230] do_vmi_munmap+0x1f1/0x2b0 [ 29.258715] __vm_munmap+0x138/0x3a0 [ 29.259197] __x64_sys_munmap+0x59/0x80 [ 29.259701] do_syscall_64+0x3f/0x90 [ 29.260177] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.260830] [ 29.261050] The buggy address belongs to the object at ffff88801a0ca740 [ 29.261050] which belongs to the cache vm_area_struct of size 168 [ 29.262549] The buggy address is located 88 bytes inside of [ 29.262549] freed 168-byte region [ffff88801a0ca740, ffff88801a0ca7e8) [ 29.263974] [ 29.264199] The buggy address belongs to the physical page: [ 29.264865] page:000000005ed5d64e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a0ca [ 29.265976] memcg:ffff88800e360a01 [ 29.266421] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.267062] page_type: 0xffffffff() [ 29.267530] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 29.268455] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e360a01 [ 29.269388] page dumped because: kasan: bad access detected [ 29.270057] [ 29.270272] Memory state around the buggy address: [ 29.270856] ffff88801a0ca680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.271725] ffff88801a0ca700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 29.272592] >ffff88801a0ca780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 29.273453] ^ [ 29.273955] ffff88801a0ca800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 29.274822] ffff88801a0ca880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 29.275677] ================================================================== [ 29.276665] Disabling lock debugging due to kernel taint [ 31.204063] BUG: Bad rss-counter state mm:00000000b03d8cc8 type:MM_FILEPAGES val:33 [ 31.205052] BUG: Bad rss-counter state mm:00000000b03d8cc8 type:MM_ANONPAGES val:22 [ 31.688240] BUG: Bad rss-counter state mm:0000000066bc3d61 type:MM_FILEPAGES val:33 [ 31.689483] BUG: Bad rss-counter state mm:0000000066bc3d61 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:34660' (ECDSA) to the list of known hosts. 2023/06/20 11:51:04 fuzzer started 2023/06/20 11:51:04 dialing manager at localhost:36067 2023/06/20 11:51:04 checking machine... 2023/06/20 11:51:04 checking revisions... [ 32.420259] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:51:05 testing simple program... [ 32.476706] cgroup: Unknown subsys name 'net' [ 32.525562] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:51:04 Registers: info registers vcpu 0 RAX=1ffff11001c998f7 RBX=ffff88800e4cc788 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800e4cc7b8 RBP=ffff888016570eb0 RSP=ffff88806ce09dd8 R8 =0000000000000001 R9 =ffffed100d9c13af R10=0000000000000003 R11=0000000000000000 R12=dffffc0000000000 R13=ffff888016571028 R14=ffffffff813782f8 R15=ffff88800daebd80 RIP=ffffffff818464ec 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 0000000000000000 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=00007f5f7462ee80 CR3=00000000159c4000 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=2034303a31353a3131203032206e754a XMM01=6964206465766965636552203a5d3033 XMM02=6f63736964203a31313a303530363320 XMM03=7266207463656e6e6f63736964206465 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034303a31353a3131203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff856167e8 RBX=0000000000006400 RCX=ffffffff81364ade RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff856167f1 RBP=ffffffff85616780 RSP=ffff888008da7d68 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=1ffff1100d9e7479 R12=ffffffff85616740 R13=ffffffff85616740 R14=dffffc0000000000 R15=ffffffff85d3e490 RIP=ffffffff8136c626 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 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=00007faa400e90b0 CR3=000000001bfbc000 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=2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c XMM01=00000000000000000000000000ff0000 XMM02=00000000000000000000000000ff0000 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=6c6f636f746f72702f6374652f006563 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000