[ 97.722226] BUG: Bad rss-counter state mm:0000000023d8a49c type:MM_FILEPAGES val:33 [ 97.723298] BUG: Bad rss-counter state mm:0000000023d8a49c type:MM_ANONPAGES val:22 [ 97.859377] ================================================================== [ 97.860456] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 97.861590] Read of size 8 at addr ffff88800e2aed08 by task sshd/220 [ 97.862665] [ 97.862923] CPU: 1 PID: 220 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 97.864134] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 97.865302] Call Trace: [ 97.865637] [ 97.865929] dump_stack_lvl+0x91/0xf0 [ 97.866423] print_report+0xcc/0x620 [ 97.866911] ? __virt_addr_valid+0x102/0x340 [ 97.867461] ? vma_interval_tree_remove+0xc75/0xec0 [ 97.868090] ? vma_interval_tree_remove+0xc75/0xec0 [ 97.868720] kasan_report+0xbe/0xf0 [ 97.869210] ? vma_interval_tree_remove+0xc75/0xec0 [ 97.869836] vma_interval_tree_remove+0xc75/0xec0 [ 97.870433] vma_prepare+0xc54/0x11a0 [ 97.870918] __split_vma+0x5af/0x950 [ 97.871391] ? __pfx___split_vma+0x10/0x10 [ 97.871917] ? find_held_lock+0x2c/0x110 [ 97.872433] do_vmi_align_munmap+0x2ba/0x11f0 [ 97.872998] ? lock_is_held_type+0x9f/0x120 [ 97.873562] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 97.874173] ? mtree_range_walk+0x632/0x900 [ 97.874729] ? mas_walk+0x5c7/0x7c0 [ 97.875203] do_vmi_munmap+0x1f1/0x2b0 [ 97.875699] mmap_region+0x1f9/0x2660 [ 97.876183] ? vm_mmap_pgoff+0x15c/0x3a0 [ 97.876696] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 97.877413] ? __pfx_lock_acquire+0x10/0x10 [ 97.877946] ? __pfx_mmap_region+0x10/0x10 [ 97.878477] ? security_mmap_addr+0x7d/0xa0 [ 97.879010] ? get_unmapped_area+0x1f5/0x3f0 [ 97.879561] do_mmap+0x854/0xf00 [ 97.880002] vm_mmap_pgoff+0x1a6/0x3a0 [ 97.880498] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 97.881068] ksys_mmap_pgoff+0x3af/0x500 [ 97.881582] do_syscall_64+0x3f/0x90 [ 97.882060] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 97.882711] RIP: 0033:0x7fe15b94bd82 [ 97.883168] 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 [ 97.885309] RSP: 002b:00007fffa6a73328 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 97.886222] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe15b94bd82 [ 97.887065] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe15ad85000 [ 97.887914] RBP: 00007fe15ad85000 R08: 0000000000000009 R09: 0000000000001000 [ 97.888760] R10: 0000000000000812 R11: 0000000000000206 R12: 000055587da72d90 [ 97.889619] R13: 00007fffa6a73340 R14: 00007fffa6a73370 R15: 00007fffa6a736d0 [ 97.890475] [ 97.890766] [ 97.890987] Allocated by task 213: [ 97.891415] kasan_save_stack+0x22/0x50 [ 97.891919] kasan_set_track+0x25/0x30 [ 97.892410] __kasan_slab_alloc+0x59/0x70 [ 97.892936] kmem_cache_alloc+0x16b/0x370 [ 97.893457] vm_area_dup+0x20/0x160 [ 97.893911] __split_vma+0x170/0x950 [ 97.894376] split_vma+0xc6/0x110 [ 97.894827] mprotect_fixup+0x8d2/0xb30 [ 97.895327] do_mprotect_pkey+0x87e/0xd40 [ 97.895849] __x64_sys_mprotect+0x78/0xc0 [ 97.896367] do_syscall_64+0x3f/0x90 [ 97.896841] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 97.897507] [ 97.897725] Freed by task 213: [ 97.898118] kasan_save_stack+0x22/0x50 [ 97.898626] kasan_set_track+0x25/0x30 [ 97.899118] kasan_save_free_info+0x2b/0x50 [ 97.899649] __kasan_slab_free+0x10a/0x190 [ 97.900184] kmem_cache_free+0x10d/0x4d0 [ 97.900689] rcu_core+0x8c8/0x2860 [ 97.901158] __do_softirq+0x1b7/0x7d4 [ 97.901634] [ 97.901850] Last potentially related work creation: [ 97.902437] kasan_save_stack+0x22/0x50 [ 97.902939] __kasan_record_aux_stack+0x8e/0xa0 [ 97.903571] __call_rcu_common.constprop.0+0x6a/0xb90 [ 97.904218] remove_vma+0x139/0x170 [ 97.904673] do_vmi_align_munmap+0xd4a/0x11f0 [ 97.905251] do_vmi_munmap+0x1f1/0x2b0 [ 97.905736] __vm_munmap+0x138/0x3a0 [ 97.906204] __x64_sys_munmap+0x59/0x80 [ 97.906700] do_syscall_64+0x3f/0x90 [ 97.907178] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 97.907823] [ 97.908037] The buggy address belongs to the object at ffff88800e2aecb0 [ 97.908037] which belongs to the cache vm_area_struct of size 168 [ 97.909521] The buggy address is located 88 bytes inside of [ 97.909521] freed 168-byte region [ffff88800e2aecb0, ffff88800e2aed58) [ 97.910924] [ 97.911142] The buggy address belongs to the physical page: [ 97.911798] page:0000000028330aba refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe2ae [ 97.912898] memcg:ffff88800d948a01 [ 97.913333] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 97.914032] page_type: 0xffffffff() [ 97.914482] raw: 0100000000000200 ffff88800879fc80 ffffea000038a040 dead000000000007 [ 97.915404] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d948a01 [ 97.916310] page dumped because: kasan: bad access detected [ 97.916969] [ 97.917202] Memory state around the buggy address: [ 97.917786] ffff88800e2aec00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 97.918658] ffff88800e2aec80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 97.919509] >ffff88800e2aed00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 97.920370] ^ [ 97.920822] ffff88800e2aed80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 97.921694] ffff88800e2aee00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 97.922555] ================================================================== [ 97.923481] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 100.583525] BUG: Bad rss-counter state mm:0000000097060180 type:MM_FILEPAGES val:33 [ 100.584518] BUG: Bad rss-counter state mm:0000000097060180 type:MM_ANONPAGES val:22 [ 101.095199] BUG: Bad rss-counter state mm:0000000044d2ec3a type:MM_FILEPAGES val:33 [ 101.096993] BUG: Bad rss-counter state mm:0000000044d2ec3a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:50573' (ECDSA) to the list of known hosts. 2023/06/19 23:44:01 fuzzer started 2023/06/19 23:44:01 dialing manager at localhost:44161 2023/06/19 23:44:01 checking machine... 2023/06/19 23:44:01 checking revisions... [ 101.847031] kmemleak: Automatic memory scanning thread ended 2023/06/19 23:44:01 testing simple program... [ 101.895758] cgroup: Unknown subsys name 'net' [ 101.932742] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:42:47 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 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 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=00007fff20c61908 CR3=0000000005482000 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=00007feb7fe5e5100000558fbf159790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000005 RBX=0000000000000001 RCX=ffffffff8618ed8a RDX=0000000000000000 RSI=0000000000000000 RDI=ffffffff8618ed8c RBP=ffff88806cf09af0 RSP=ffff88806cf09a28 R8 =0000000000000001 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=000000000002f6f5 R12=ffff88806cf09af8 R13=ffff88806cf09ae0 R14=ffff88801475f940 R15=ffff88806cf09a98 RIP=ffffffff811311f6 RFL=00000206 [-----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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f11cb6fb900 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=00007f11cab0ff40 CR3=000000000cb34000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=70b1e19a557c3d7600000000000ae988 XMM05=d2e63d35f367e807000000000013d4d0 XMM06=c291bd5c70af25b9000000000013c570 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000