[ 24.141272] BUG: Bad rss-counter state mm:000000002ca3748a type:MM_FILEPAGES val:33 [ 24.142236] BUG: Bad rss-counter state mm:000000002ca3748a type:MM_ANONPAGES val:22 [ 24.251178] ================================================================== [ 24.251941] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.252705] Read of size 8 at addr ffff88800e350b38 by task sshd/220 [ 24.253321] [ 24.253493] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.254178] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.255139] Call Trace: [ 24.255398] [ 24.255625] dump_stack_lvl+0x91/0xf0 [ 24.256021] print_report+0xcc/0x620 [ 24.256424] ? __virt_addr_valid+0x102/0x340 [ 24.256793] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.257206] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.257608] kasan_report+0xbe/0xf0 [ 24.257902] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.258305] vma_interval_tree_remove+0xc75/0xec0 [ 24.258684] vma_prepare+0xc54/0x11a0 [ 24.258992] __split_vma+0x5af/0x950 [ 24.259285] ? __pfx___split_vma+0x10/0x10 [ 24.259617] ? find_held_lock+0x2c/0x110 [ 24.259935] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.260310] ? lock_is_held_type+0x9f/0x120 [ 24.260661] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.261057] ? mtree_range_walk+0x632/0x900 [ 24.261414] ? mas_walk+0x5c7/0x7c0 [ 24.261714] do_vmi_munmap+0x1f1/0x2b0 [ 24.262030] mmap_region+0x1f9/0x2660 [ 24.262339] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.262660] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.263127] ? __pfx_lock_acquire+0x10/0x10 [ 24.263469] ? __pfx_mmap_region+0x10/0x10 [ 24.263799] ? security_mmap_addr+0x7d/0xa0 [ 24.264153] ? get_unmapped_area+0x1f5/0x3f0 [ 24.264502] do_mmap+0x854/0xf00 [ 24.264782] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.265107] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.265465] ksys_mmap_pgoff+0x3af/0x500 [ 24.265793] do_syscall_64+0x3f/0x90 [ 24.266107] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.266507] RIP: 0033:0x7f8f703fdd82 [ 24.266813] 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 [ 24.268193] RSP: 002b:00007ffc3059afc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.268765] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8f703fdd82 [ 24.269313] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8f6f837000 [ 24.269870] RBP: 00007f8f6f837000 R08: 0000000000000009 R09: 0000000000001000 [ 24.270409] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d777425ec0 [ 24.270951] R13: 00007ffc3059afe0 R14: 00007ffc3059b010 R15: 00007ffc3059b370 [ 24.271516] [ 24.271692] [ 24.271830] Allocated by task 213: [ 24.272109] kasan_save_stack+0x22/0x50 [ 24.272441] kasan_set_track+0x25/0x30 [ 24.272755] __kasan_slab_alloc+0x59/0x70 [ 24.273092] kmem_cache_alloc+0x16b/0x370 [ 24.273428] vm_area_dup+0x20/0x160 [ 24.273720] __split_vma+0x170/0x950 [ 24.274010] split_vma+0xc6/0x110 [ 24.274279] mprotect_fixup+0x8d2/0xb30 [ 24.274587] do_mprotect_pkey+0x87e/0xd40 [ 24.274912] __x64_sys_mprotect+0x78/0xc0 [ 24.275238] do_syscall_64+0x3f/0x90 [ 24.275542] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.275938] [ 24.276068] Freed by task 210: [ 24.276326] kasan_save_stack+0x22/0x50 [ 24.276646] kasan_set_track+0x25/0x30 [ 24.276961] kasan_save_free_info+0x2b/0x50 [ 24.277305] __kasan_slab_free+0x10a/0x190 [ 24.277646] kmem_cache_free+0x10d/0x4d0 [ 24.277979] rcu_core+0x8c8/0x2860 [ 24.278265] __do_softirq+0x1b7/0x7d4 [ 24.278574] [ 24.278709] Last potentially related work creation: [ 24.279072] kasan_save_stack+0x22/0x50 [ 24.279387] __kasan_record_aux_stack+0x8e/0xa0 [ 24.279751] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.280163] remove_vma+0x139/0x170 [ 24.280451] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.280802] do_vmi_munmap+0x1f1/0x2b0 [ 24.281112] __vm_munmap+0x138/0x3a0 [ 24.281413] __x64_sys_munmap+0x59/0x80 [ 24.281726] do_syscall_64+0x3f/0x90 [ 24.282025] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.282421] [ 24.282561] Second to last potentially related work creation: [ 24.282982] kasan_save_stack+0x22/0x50 [ 24.283295] __kasan_record_aux_stack+0x8e/0xa0 [ 24.283644] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.284044] remove_vma+0x139/0x170 [ 24.284332] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.284687] do_vmi_munmap+0x1f1/0x2b0 [ 24.284984] mmap_region+0x1f9/0x2660 [ 24.285279] do_mmap+0x854/0xf00 [ 24.285552] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.285857] ksys_mmap_pgoff+0x3af/0x500 [ 24.286159] do_syscall_64+0x3f/0x90 [ 24.286455] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.286861] [ 24.286991] The buggy address belongs to the object at ffff88800e350ae0 [ 24.286991] which belongs to the cache vm_area_struct of size 168 [ 24.287910] The buggy address is located 88 bytes inside of [ 24.287910] freed 168-byte region [ffff88800e350ae0, ffff88800e350b88) [ 24.288825] [ 24.288957] The buggy address belongs to the physical page: [ 24.289377] page:000000005d650525 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe350 [ 24.290067] memcg:ffff88800da43901 [ 24.290340] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.290736] page_type: 0xffffffff() [ 24.291016] raw: 0100000000000200 ffff88800879fc80 ffffea000037b000 dead000000000006 [ 24.291607] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800da43901 [ 24.292183] page dumped because: kasan: bad access detected [ 24.292596] [ 24.292733] Memory state around the buggy address: [ 24.293090] ffff88800e350a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.293619] ffff88800e350a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 24.294159] >ffff88800e350b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.294708] ^ [ 24.295107] ffff88800e350b80: fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 [ 24.295648] ffff88800e350c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 24.296200] ================================================================== [ 24.296839] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.250257] BUG: Bad rss-counter state mm:000000009e5e8eb2 type:MM_FILEPAGES val:33 [ 26.251529] BUG: Bad rss-counter state mm:000000009e5e8eb2 type:MM_ANONPAGES val:22 [ 26.733507] BUG: Bad rss-counter state mm:00000000165a4042 type:MM_FILEPAGES val:33 [ 26.734676] BUG: Bad rss-counter state mm:00000000165a4042 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:42483' (ECDSA) to the list of known hosts. 2023/06/20 01:40:27 fuzzer started 2023/06/20 01:40:27 dialing manager at localhost:44161 2023/06/20 01:40:27 checking machine... 2023/06/20 01:40:27 checking revisions... [ 27.392784] kmemleak: Automatic memory scanning thread ended 2023/06/20 01:40:27 testing simple program... [ 27.437353] cgroup: Unknown subsys name 'net' [ 27.491281] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:40:26 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000057 RCX=0000000000000000 RDX=0000000000000000 RSI=000000000000003a RDI=00007f64c8000bad RBP=0000000000000014 RSP=00007f64ce3d2660 R8 =00000000ffffff00 R9 =00007f64ce3d27e0 R10=00007f64ce3d2788 R11=00007f64ce3d276c R12=0000000000000001 R13=000000000000000a R14=00007f64c8000bac R15=0000000000000058 RIP=00005569fb8729a4 RFL=00000293 [--S-A-C] 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 00007f64ce3d6700 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=00007f3dae251570 CR3=0000000016af6000 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=30343a3130203032206e754a3e38333c XMM01=656e6e6f637369642064657669656365 XMM02=63736964203a31313a38343631342074 XMM03=66207463656e6e6f6373696420646576 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383436 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=ffff8880195f9b40 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff8880195f9b40 RSI=000000000000002d RDI=ffff888016827f58 RBP=ffff888016827f58 RSP=ffff888016827f18 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=ffff888016827f58 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff813907b6 RFL=00000296 [--S-AP-] 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 00007f19344c9900 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=00007ffc3abc5000 CR3=000000000fbdc000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000