[ 30.733014] BUG: Bad rss-counter state mm:000000007c58ef16 type:MM_FILEPAGES val:33 [ 30.733716] BUG: Bad rss-counter state mm:000000007c58ef16 type:MM_ANONPAGES val:22 [ 30.868648] ================================================================== [ 30.869356] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.870009] Read of size 8 at addr ffff88800db93228 by task sshd/219 [ 30.870539] [ 30.870690] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.871284] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.871985] Call Trace: [ 30.872213] [ 30.872419] dump_stack_lvl+0x91/0xf0 [ 30.872809] print_report+0xcc/0x620 [ 30.873333] ? __virt_addr_valid+0x102/0x340 [ 30.873737] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.874176] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.874619] kasan_report+0xbe/0xf0 [ 30.875002] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.875464] vma_interval_tree_remove+0xc75/0xec0 [ 30.875918] vma_prepare+0xc54/0x11a0 [ 30.876265] __split_vma+0x5af/0x950 [ 30.876598] ? __pfx___split_vma+0x10/0x10 [ 30.877024] ? find_held_lock+0x2c/0x110 [ 30.877390] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.877800] ? lock_is_held_type+0x9f/0x120 [ 30.878188] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.878622] ? mtree_range_walk+0x632/0x900 [ 30.879014] ? mas_walk+0x5c7/0x7c0 [ 30.879354] do_vmi_munmap+0x1f1/0x2b0 [ 30.879707] mmap_region+0x1f9/0x2660 [ 30.880060] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.880431] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.880972] ? __pfx_lock_acquire+0x10/0x10 [ 30.881355] ? __pfx_mmap_region+0x10/0x10 [ 30.881730] ? security_mmap_addr+0x7d/0xa0 [ 30.882107] ? get_unmapped_area+0x1f5/0x3f0 [ 30.882502] do_mmap+0x854/0xf00 [ 30.882813] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.883174] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.883588] ksys_mmap_pgoff+0x3af/0x500 [ 30.883985] do_syscall_64+0x3f/0x90 [ 30.884342] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.884858] RIP: 0033:0x7f8811fe9d82 [ 30.885335] 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 [ 30.886974] RSP: 002b:00007ffe6b277318 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.887620] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8811fe9d82 [ 30.888221] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8811423000 [ 30.888856] RBP: 00007f8811423000 R08: 0000000000000009 R09: 0000000000001000 [ 30.889466] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564d31117f70 [ 30.890072] R13: 00007ffe6b277330 R14: 00007ffe6b277360 R15: 00007ffe6b2776c0 [ 30.890688] [ 30.890923] [ 30.891105] Allocated by task 212: [ 30.891417] kasan_save_stack+0x22/0x50 [ 30.891793] kasan_set_track+0x25/0x30 [ 30.892161] __kasan_slab_alloc+0x59/0x70 [ 30.892531] kmem_cache_alloc+0x16b/0x370 [ 30.892916] vm_area_dup+0x20/0x160 [ 30.893238] __split_vma+0x170/0x950 [ 30.893577] split_vma+0xc6/0x110 [ 30.893886] mprotect_fixup+0x8d2/0xb30 [ 30.894242] do_mprotect_pkey+0x87e/0xd40 [ 30.894610] __x64_sys_mprotect+0x78/0xc0 [ 30.894978] do_syscall_64+0x3f/0x90 [ 30.895327] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.895795] [ 30.895954] Freed by task 13: [ 30.896232] kasan_save_stack+0x22/0x50 [ 30.896594] kasan_set_track+0x25/0x30 [ 30.896999] kasan_save_free_info+0x2b/0x50 [ 30.897370] __kasan_slab_free+0x10a/0x190 [ 30.897738] kmem_cache_free+0x10d/0x4d0 [ 30.898103] rcu_core+0x8c8/0x2860 [ 30.898427] __do_softirq+0x1b7/0x7d4 [ 30.898768] [ 30.898923] Last potentially related work creation: [ 30.899343] kasan_save_stack+0x22/0x50 [ 30.899704] __kasan_record_aux_stack+0x8e/0xa0 [ 30.900156] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.900608] remove_vma+0x139/0x170 [ 30.900960] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.901370] do_vmi_munmap+0x1f1/0x2b0 [ 30.901710] __vm_munmap+0x138/0x3a0 [ 30.902035] __x64_sys_munmap+0x59/0x80 [ 30.902388] do_syscall_64+0x3f/0x90 [ 30.902720] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.903195] [ 30.903343] Second to last potentially related work creation: [ 30.903830] kasan_save_stack+0x22/0x50 [ 30.904200] __kasan_record_aux_stack+0x8e/0xa0 [ 30.904625] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.905099] remove_vma+0x139/0x170 [ 30.905424] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.905820] do_vmi_munmap+0x1f1/0x2b0 [ 30.906172] __vm_munmap+0x138/0x3a0 [ 30.906513] elf_map+0x26f/0x310 [ 30.906832] load_elf_binary+0x3417/0x5030 [ 30.907218] bprm_execve+0x803/0x1940 [ 30.907554] do_execveat_common+0x734/0x8e0 [ 30.907925] __x64_sys_execve+0x93/0xc0 [ 30.908269] do_syscall_64+0x3f/0x90 [ 30.908608] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.909124] [ 30.909278] The buggy address belongs to the object at ffff88800db931d0 [ 30.909278] which belongs to the cache vm_area_struct of size 168 [ 30.910325] The buggy address is located 88 bytes inside of [ 30.910325] freed 168-byte region [ffff88800db931d0, ffff88800db93278) [ 30.911321] [ 30.911476] The buggy address belongs to the physical page: [ 30.911936] page:000000008ab0d05e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdb93 [ 30.912758] memcg:ffff88800ec58f01 [ 30.913073] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.913528] page_type: 0xffffffff() [ 30.913851] raw: 0100000000000200 ffff8880087a0c80 ffffea00003a3700 dead000000000008 [ 30.914500] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ec58f01 [ 30.915156] page dumped because: kasan: bad access detected [ 30.915631] [ 30.915777] Memory state around the buggy address: [ 30.916225] ffff88800db93100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.916908] ffff88800db93180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.917533] >ffff88800db93200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.918140] ^ [ 30.918545] ffff88800db93280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.919155] ffff88800db93300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.919758] ================================================================== [ 30.920507] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.447089] BUG: Bad rss-counter state mm:000000006f3d9ac2 type:MM_FILEPAGES val:33 [ 32.447799] BUG: Bad rss-counter state mm:000000006f3d9ac2 type:MM_ANONPAGES val:22 [ 32.798092] BUG: Bad rss-counter state mm:0000000085d33f1b type:MM_FILEPAGES val:33 [ 32.798806] BUG: Bad rss-counter state mm:0000000085d33f1b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:48331' (ECDSA) to the list of known hosts. 2023/06/21 08:39:16 fuzzer started 2023/06/21 08:39:16 dialing manager at localhost:36067 2023/06/21 08:39:16 checking machine... 2023/06/21 08:39:16 checking revisions... [ 33.306113] kmemleak: Automatic memory scanning thread ended 2023/06/21 08:39:16 testing simple program... [ 33.339112] cgroup: Unknown subsys name 'net' [ 33.380873] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:39:16 Registers: info registers vcpu 0 RAX=ffff888018fc0001 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff888018fbfd01 RSI=ffff888018fbfde0 RDI=ffff888018fbfaa8 RBP=ffff888018fbfde0 RSP=ffff888018fbfa00 R8 =ffffffff86138e90 R9 =ffff888018fbfad8 R10=0000000000038001 R11=0000000000020d8f R12=0000000000000008 R13=ffff888018fb8000 R14=ffff888018fbfde8 R15=ffff888018fbfa98 RIP=ffffffff811304ce 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 00007fdce0fec900 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=00007ffc0c289000 CR3=000000000ec94000 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=000000000000000000ffff0000000000 XMM02=2f00646f6874656d5f74707972636e65 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ff00ffffffffffffffffffffffffffff XMM08=20002020202020200020202020202020 XMM09=0000ffffffffffffffffffffffffffff XMM10=00002020202020200020202020202020 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff888016b06000 RCX=ffffffff812d86ea RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffea000068c0c0 RSP=ffff88806cf09cf0 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000000 R12=ffff88806cf09d68 R13=ffff88800e59e300 R14=ffffea000068c0f8 R15=0000000000000000 RIP=ffffffff812d8a62 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=00007f802df321d0 CR3=000000000da42000 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=39333a3830203132206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3832325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320343338 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000