[ 44.919964] BUG: Bad rss-counter state mm:00000000c4458015 type:MM_FILEPAGES val:33 [ 44.920985] BUG: Bad rss-counter state mm:00000000c4458015 type:MM_ANONPAGES val:22 [ 45.086163] ================================================================== [ 45.087071] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 45.088045] Read of size 8 at addr ffff88801a01d228 by task sshd/220 [ 45.088809] [ 45.089025] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 45.090019] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 45.091012] Call Trace: [ 45.091334] [ 45.091629] dump_stack_lvl+0x91/0xf0 [ 45.092119] print_report+0xcc/0x620 [ 45.092601] ? __virt_addr_valid+0x102/0x340 [ 45.093156] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.093780] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.094400] kasan_report+0xbe/0xf0 [ 45.094886] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.095516] vma_interval_tree_remove+0xc75/0xec0 [ 45.096128] vma_prepare+0xc54/0x11a0 [ 45.096611] __split_vma+0x5af/0x950 [ 45.097089] ? __pfx___split_vma+0x10/0x10 [ 45.097618] ? find_held_lock+0x2c/0x110 [ 45.098141] do_vmi_align_munmap+0x2ba/0x11f0 [ 45.098710] ? lock_is_held_type+0x9f/0x120 [ 45.099248] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 45.099883] ? mtree_range_walk+0x632/0x900 [ 45.100437] ? mas_walk+0x5c7/0x7c0 [ 45.100914] do_vmi_munmap+0x1f1/0x2b0 [ 45.101411] mmap_region+0x1f9/0x2660 [ 45.101898] ? vm_mmap_pgoff+0x15c/0x3a0 [ 45.102406] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 45.103117] ? __pfx_lock_acquire+0x10/0x10 [ 45.103663] ? __pfx_mmap_region+0x10/0x10 [ 45.104191] ? security_mmap_addr+0x7d/0xa0 [ 45.104720] ? get_unmapped_area+0x1f5/0x3f0 [ 45.105289] do_mmap+0x854/0xf00 [ 45.105737] vm_mmap_pgoff+0x1a6/0x3a0 [ 45.106234] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 45.106801] ksys_mmap_pgoff+0x3af/0x500 [ 45.107309] do_syscall_64+0x3f/0x90 [ 45.107807] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.108450] RIP: 0033:0x7f9921be0d82 [ 45.108909] 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 [ 45.111051] RSP: 002b:00007ffdffab2468 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 45.112007] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9921be0d82 [ 45.112871] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f992101a000 [ 45.113730] RBP: 00007f992101a000 R08: 0000000000000009 R09: 0000000000001000 [ 45.114603] R10: 0000000000000812 R11: 0000000000000206 R12: 00005644c5605ec0 [ 45.115470] R13: 00007ffdffab2480 R14: 00007ffdffab24b0 R15: 00007ffdffab2810 [ 45.116343] [ 45.116636] [ 45.116853] Allocated by task 212: [ 45.117281] kasan_save_stack+0x22/0x50 [ 45.117787] kasan_set_track+0x25/0x30 [ 45.118294] __kasan_slab_alloc+0x59/0x70 [ 45.118826] kmem_cache_alloc+0x16b/0x370 [ 45.119344] vm_area_dup+0x20/0x160 [ 45.119828] __split_vma+0x170/0x950 [ 45.120298] split_vma+0xc6/0x110 [ 45.120736] mprotect_fixup+0x8d2/0xb30 [ 45.121240] do_mprotect_pkey+0x87e/0xd40 [ 45.121771] __x64_sys_mprotect+0x78/0xc0 [ 45.122298] do_syscall_64+0x3f/0x90 [ 45.122776] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.123415] [ 45.123656] Freed by task 13: [ 45.124039] kasan_save_stack+0x22/0x50 [ 45.124545] kasan_set_track+0x25/0x30 [ 45.125048] kasan_save_free_info+0x2b/0x50 [ 45.125579] __kasan_slab_free+0x10a/0x190 [ 45.126108] kmem_cache_free+0x10d/0x4d0 [ 45.126615] rcu_core+0x8c8/0x2860 [ 45.127059] __do_softirq+0x1b7/0x7d4 [ 45.127546] [ 45.127764] Last potentially related work creation: [ 45.128345] kasan_save_stack+0x22/0x50 [ 45.128847] __kasan_record_aux_stack+0x8e/0xa0 [ 45.129420] __call_rcu_common.constprop.0+0x6a/0xb90 [ 45.130063] remove_vma+0x139/0x170 [ 45.130515] do_vmi_align_munmap+0xd4a/0x11f0 [ 45.131078] do_vmi_munmap+0x1f1/0x2b0 [ 45.131577] __vm_munmap+0x138/0x3a0 [ 45.132043] __x64_sys_munmap+0x59/0x80 [ 45.132537] do_syscall_64+0x3f/0x90 [ 45.133012] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.133653] [ 45.133867] The buggy address belongs to the object at ffff88801a01d1d0 [ 45.133867] which belongs to the cache vm_area_struct of size 168 [ 45.135348] The buggy address is located 88 bytes inside of [ 45.135348] freed 168-byte region [ffff88801a01d1d0, ffff88801a01d278) [ 45.136764] [ 45.136981] The buggy address belongs to the physical page: [ 45.137638] page:000000000fb4979b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a01d [ 45.138734] memcg:ffff8880197f0301 [ 45.139159] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 45.139873] page_type: 0xffffffff() [ 45.140323] raw: 0100000000000200 ffff88800879fc80 ffffea0000579680 dead000000000005 [ 45.141239] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880197f0301 [ 45.142142] page dumped because: kasan: bad access detected [ 45.142804] [ 45.143019] Memory state around the buggy address: [ 45.143602] ffff88801a01d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.144455] ffff88801a01d180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 45.145317] >ffff88801a01d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 45.146169] ^ [ 45.146726] ffff88801a01d280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 45.147614] ffff88801a01d300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 45.148481] ================================================================== [ 45.149469] Disabling lock debugging due to kernel taint [ 47.049770] BUG: Bad rss-counter state mm:0000000067bd8475 type:MM_FILEPAGES val:33 [ 47.050980] BUG: Bad rss-counter state mm:0000000067bd8475 type:MM_ANONPAGES val:22 [ 47.396117] BUG: Bad rss-counter state mm:00000000398f1f3b type:MM_FILEPAGES val:33 [ 47.397272] BUG: Bad rss-counter state mm:00000000398f1f3b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7141' (ECDSA) to the list of known hosts. 2023/06/19 11:34:11 fuzzer started 2023/06/19 11:34:11 dialing manager at localhost:44161 2023/06/19 11:34:11 checking machine... 2023/06/19 11:34:11 checking revisions... [ 48.059133] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:34:11 testing simple program... [ 48.108759] cgroup: Unknown subsys name 'net' [ 48.166040] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:33:55 Registers: info registers vcpu 0 RAX=fffffbfff0ba77da RBX=fffffbfff0ba77db RCX=ffffffff81370c98 RDX=0000000000000001 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=fffffbfff0ba77da RSP=ffff8880183ffa80 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=0000000000000000 R13=ffff88806ce3a3a8 R14=ffff88806ce3a2c0 R15=0000000000000000 RIP=ffffffff8180eff3 RFL=00000083 [--S---C] 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 00007f978126c900 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=00007ffe94b68000 CR3=000000001c814000 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=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 info registers vcpu 1 RAX=ffff8880142858a8 RBX=ffff88806cf09ee8 RCX=1ffff11002850b15 RDX=dffffc0000000000 RSI=0000000000000008 RDI=ffff88806cf09ef8 RBP=0000000000000001 RSP=ffff88806cf09e50 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000000 R12=dffffc0000000000 R13=ffff88806cf09ee8 R14=ffff88806cf35000 R15=ffff888018acdc70 RIP=ffffffff8137fc84 RFL=00000246 [---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=00007ff37ac77350 CR3=000000000c618000 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=2031313a34333a3131203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031313a34333a3131203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000