[ 23.844879] BUG: Bad rss-counter state mm:00000000400c4a1a type:MM_FILEPAGES val:33 [ 23.846211] BUG: Bad rss-counter state mm:00000000400c4a1a type:MM_ANONPAGES val:22 [ 23.883193] ================================================================== [ 23.884063] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.884948] Read of size 8 at addr ffff88800e703968 by task sshd/220 [ 23.885677] [ 23.885884] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.886907] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.887836] Call Trace: [ 23.888138] [ 23.888412] dump_stack_lvl+0x91/0xf0 [ 23.888907] print_report+0xcc/0x620 [ 23.889367] ? __virt_addr_valid+0x102/0x340 [ 23.889891] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.890497] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.891082] kasan_report+0xbe/0xf0 [ 23.891538] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.892129] vma_interval_tree_remove+0xc75/0xec0 [ 23.892702] vma_prepare+0xc54/0x11a0 [ 23.893155] __split_vma+0x5af/0x950 [ 23.893606] ? __pfx___split_vma+0x10/0x10 [ 23.894109] ? find_held_lock+0x2c/0x110 [ 23.894623] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.895160] ? lock_is_held_type+0x9f/0x120 [ 23.895682] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.896291] ? mtree_range_walk+0x632/0x900 [ 23.896855] ? mas_walk+0x5c7/0x7c0 [ 23.897328] do_vmi_munmap+0x1f1/0x2b0 [ 23.897829] mmap_region+0x1f9/0x2660 [ 23.898327] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.898847] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.899555] ? __pfx_lock_acquire+0x10/0x10 [ 23.900092] ? __pfx_mmap_region+0x10/0x10 [ 23.900634] ? security_mmap_addr+0x7d/0xa0 [ 23.901160] ? get_unmapped_area+0x1f5/0x3f0 [ 23.901705] do_mmap+0x854/0xf00 [ 23.902172] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.902676] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.903247] ksys_mmap_pgoff+0x3af/0x500 [ 23.903768] do_syscall_64+0x3f/0x90 [ 23.904259] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.904916] RIP: 0033:0x7f8b67371d82 [ 23.905382] 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 [ 23.907530] RSP: 002b:00007ffd9348d098 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.908441] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8b67371d82 [ 23.909297] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8b667ab000 [ 23.910169] RBP: 00007f8b667ab000 R08: 0000000000000009 R09: 0000000000001000 [ 23.911021] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f10dda4ec0 [ 23.911867] R13: 00007ffd9348d0b0 R14: 00007ffd9348d0e0 R15: 00007ffd9348d440 [ 23.912725] [ 23.913015] [ 23.913231] Allocated by task 213: [ 23.913659] kasan_save_stack+0x22/0x50 [ 23.914168] kasan_set_track+0x25/0x30 [ 23.914660] __kasan_slab_alloc+0x59/0x70 [ 23.915180] kmem_cache_alloc+0x16b/0x370 [ 23.915699] vm_area_dup+0x20/0x160 [ 23.916150] __split_vma+0x170/0x950 [ 23.916623] split_vma+0xc6/0x110 [ 23.917061] mprotect_fixup+0x8d2/0xb30 [ 23.917559] do_mprotect_pkey+0x87e/0xd40 [ 23.918076] __x64_sys_mprotect+0x78/0xc0 [ 23.918624] do_syscall_64+0x3f/0x90 [ 23.919100] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.919743] [ 23.919965] Freed by task 213: [ 23.920354] kasan_save_stack+0x22/0x50 [ 23.920868] kasan_set_track+0x25/0x30 [ 23.921362] kasan_save_free_info+0x2b/0x50 [ 23.921890] __kasan_slab_free+0x10a/0x190 [ 23.922435] kmem_cache_free+0x10d/0x4d0 [ 23.922942] rcu_core+0x8c8/0x2860 [ 23.923384] __do_softirq+0x1b7/0x7d4 [ 23.923870] [ 23.924084] Last potentially related work creation: [ 23.924665] kasan_save_stack+0x22/0x50 [ 23.925168] __kasan_record_aux_stack+0x8e/0xa0 [ 23.925738] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.926384] remove_vma+0x139/0x170 [ 23.926833] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.927384] do_vmi_munmap+0x1f1/0x2b0 [ 23.927883] __vm_munmap+0x138/0x3a0 [ 23.928350] __x64_sys_munmap+0x59/0x80 [ 23.928843] do_syscall_64+0x3f/0x90 [ 23.929318] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.929961] [ 23.930205] Second to last potentially related work creation: [ 23.930887] kasan_save_stack+0x22/0x50 [ 23.931434] __kasan_record_aux_stack+0x8e/0xa0 [ 23.932002] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.932643] remove_vma+0x139/0x170 [ 23.933093] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.933651] do_vmi_munmap+0x1f1/0x2b0 [ 23.934145] mmap_region+0x1f9/0x2660 [ 23.934625] do_mmap+0x854/0xf00 [ 23.935067] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.935550] ksys_mmap_pgoff+0x3af/0x500 [ 23.936052] do_syscall_64+0x3f/0x90 [ 23.936528] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.937165] [ 23.937377] The buggy address belongs to the object at ffff88800e703910 [ 23.937377] which belongs to the cache vm_area_struct of size 168 [ 23.938859] The buggy address is located 88 bytes inside of [ 23.938859] freed 168-byte region [ffff88800e703910, ffff88800e7039b8) [ 23.940268] [ 23.940488] The buggy address belongs to the physical page: [ 23.941156] page:000000003bf717a6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe703 [ 23.942241] memcg:ffff88800e0b4f01 [ 23.942675] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.943319] page_type: 0xffffffff() [ 23.943763] raw: 0100000000000200 ffff8880087a0c80 ffffea00003a6480 dead000000000006 [ 23.944677] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e0b4f01 [ 23.945582] page dumped because: kasan: bad access detected [ 23.946249] [ 23.946465] Memory state around the buggy address: [ 23.947044] ffff88800e703800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 23.947908] ffff88800e703880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 23.948768] >ffff88800e703900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.949616] ^ [ 23.950401] ffff88800e703980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 23.951271] ffff88800e703a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.952133] ================================================================== [ 23.953372] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.345197] BUG: Bad rss-counter state mm:000000005ec9b47c type:MM_FILEPAGES val:33 [ 26.346728] BUG: Bad rss-counter state mm:000000005ec9b47c type:MM_ANONPAGES val:22 [ 26.854502] BUG: Bad rss-counter state mm:0000000042541bc4 type:MM_FILEPAGES val:33 [ 26.856016] BUG: Bad rss-counter state mm:0000000042541bc4 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:12540' (ECDSA) to the list of known hosts. 2023/06/20 23:51:20 fuzzer started 2023/06/20 23:51:20 dialing manager at localhost:36067 2023/06/20 23:51:20 checking machine... 2023/06/20 23:51:20 checking revisions... [ 27.603411] kmemleak: Automatic memory scanning thread ended 2023/06/20 23:51:21 testing simple program... [ 27.662212] cgroup: Unknown subsys name 'net' [ 27.744916] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:51:20 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=00007f938ba8d76c RCX=000000000000004a RDX=0000000000000000 RSI=00007f937c000ba5 RDI=0000000000000000 RBP=000055ec6b3c41c0 RSP=00007f938ba8d6c8 R8 =00007f937c0067f0 R9 =00007f937c000ba5 R10=00007f938bfe0b80 R11=0000000000000000 R12=00007f938ba8d7e0 R13=00000000fffff7c5 R14=00007f938ba8d76c R15=00007f938ba8d788 RIP=000055ec6a07f262 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 00007f938ba91700 00000000 00000000 GS =0000 0000000000000000 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=00007f53a23d68e0 CR3=000000000cb96000 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=31353a3332203032206e754a3e38333c XMM01=656e6e6f637369642064657669656365 XMM02=63736964203a31313a30383033352074 XMM03=66207463656e6e6f6373696420646576 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320303830 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=0000000000000001 RCX=ffffffff815342db RDX=fffffbfff0ba7a6b RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffffff84535ffc RSP=ffff888016a1f6f8 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000287 R13=ffff88800d031d58 R14=ffffffff83675648 R15=ffff888015e86600 RIP=ffffffff815342db 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 00007f3cc7c5a900 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=00007ffdee579000 CR3=00000000144fe000 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=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000