syzkaller login: [ 31.619626] BUG: Bad rss-counter state mm:000000007dd448a8 type:MM_FILEPAGES val:33 [ 31.620590] BUG: Bad rss-counter state mm:000000007dd448a8 type:MM_ANONPAGES val:22 [ 31.760260] ================================================================== [ 31.761088] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.761935] Read of size 8 at addr ffff88800d7c2b38 by task sshd/221 [ 31.762645] [ 31.762844] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.763654] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.764716] Call Trace: [ 31.765010] [ 31.765272] dump_stack_lvl+0x91/0xf0 [ 31.765722] print_report+0xcc/0x620 [ 31.766166] ? __virt_addr_valid+0x102/0x340 [ 31.766668] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.767229] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.767814] kasan_report+0xbe/0xf0 [ 31.768266] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.768826] vma_interval_tree_remove+0xc75/0xec0 [ 31.769413] vma_prepare+0xc54/0x11a0 [ 31.769846] __split_vma+0x5af/0x950 [ 31.770270] ? __pfx___split_vma+0x10/0x10 [ 31.770750] ? find_held_lock+0x2c/0x110 [ 31.771220] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.771743] ? lock_is_held_type+0x9f/0x120 [ 31.772231] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.772779] ? mtree_range_walk+0x632/0x900 [ 31.773274] ? mas_walk+0x5c7/0x7c0 [ 31.773705] do_vmi_munmap+0x1f1/0x2b0 [ 31.774144] mmap_region+0x1f9/0x2660 [ 31.774574] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.775041] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.775710] ? __pfx_lock_acquire+0x10/0x10 [ 31.776195] ? __pfx_mmap_region+0x10/0x10 [ 31.776671] ? security_mmap_addr+0x7d/0xa0 [ 31.777150] ? get_unmapped_area+0x1f5/0x3f0 [ 31.777642] do_mmap+0x854/0xf00 [ 31.778035] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.778478] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.778985] ksys_mmap_pgoff+0x3af/0x500 [ 31.779452] do_syscall_64+0x3f/0x90 [ 31.779888] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.780478] RIP: 0033:0x7f1358a20d82 [ 31.780898] 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 [ 31.782851] RSP: 002b:00007ffd4d0fc8e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.783678] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1358a20d82 [ 31.784456] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1357e5a000 [ 31.785278] RBP: 00007f1357e5a000 R08: 0000000000000009 R09: 0000000000001000 [ 31.786053] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b04c55bec0 [ 31.786828] R13: 00007ffd4d0fc900 R14: 00007ffd4d0fc930 R15: 00007ffd4d0fcc90 [ 31.787622] [ 31.787889] [ 31.788087] Allocated by task 214: [ 31.788478] kasan_save_stack+0x22/0x50 [ 31.788937] kasan_set_track+0x25/0x30 [ 31.789384] __kasan_slab_alloc+0x59/0x70 [ 31.789858] kmem_cache_alloc+0x16b/0x370 [ 31.790325] vm_area_dup+0x20/0x160 [ 31.790740] __split_vma+0x170/0x950 [ 31.791158] split_vma+0xc6/0x110 [ 31.791567] mprotect_fixup+0x8d2/0xb30 [ 31.792028] do_mprotect_pkey+0x87e/0xd40 [ 31.792497] __x64_sys_mprotect+0x78/0xc0 [ 31.792969] do_syscall_64+0x3f/0x90 [ 31.793404] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.793998] [ 31.794193] Freed by task 214: [ 31.794551] kasan_save_stack+0x22/0x50 [ 31.795004] kasan_set_track+0x25/0x30 [ 31.795466] kasan_save_free_info+0x2b/0x50 [ 31.795959] __kasan_slab_free+0x10a/0x190 [ 31.796448] kmem_cache_free+0x10d/0x4d0 [ 31.796917] rcu_core+0x8c8/0x2860 [ 31.797328] __do_softirq+0x1b7/0x7d4 [ 31.797766] [ 31.797962] Last potentially related work creation: [ 31.798499] kasan_save_stack+0x22/0x50 [ 31.798958] __kasan_record_aux_stack+0x8e/0xa0 [ 31.799486] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.800107] remove_vma+0x139/0x170 [ 31.800559] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.801103] do_vmi_munmap+0x1f1/0x2b0 [ 31.801566] __vm_munmap+0x138/0x3a0 [ 31.802002] __x64_sys_munmap+0x59/0x80 [ 31.802471] do_syscall_64+0x3f/0x90 [ 31.802914] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.803524] [ 31.803727] Second to last potentially related work creation: [ 31.804368] kasan_save_stack+0x22/0x50 [ 31.804837] __kasan_record_aux_stack+0x8e/0xa0 [ 31.805372] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.806057] remove_vma+0x139/0x170 [ 31.806487] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.807016] do_vmi_munmap+0x1f1/0x2b0 [ 31.807477] mmap_region+0x1f9/0x2660 [ 31.807924] do_mmap+0x854/0xf00 [ 31.808327] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.808790] ksys_mmap_pgoff+0x3af/0x500 [ 31.809268] do_syscall_64+0x3f/0x90 [ 31.809714] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.810324] [ 31.810527] The buggy address belongs to the object at ffff88800d7c2ae0 [ 31.810527] which belongs to the cache vm_area_struct of size 168 [ 31.811922] The buggy address is located 88 bytes inside of [ 31.811922] freed 168-byte region [ffff88800d7c2ae0, ffff88800d7c2b88) [ 31.813259] [ 31.813460] The buggy address belongs to the physical page: [ 31.814074] page:00000000cb7e93d7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd7c2 [ 31.815099] memcg:ffff88800ef6d601 [ 31.815517] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.816140] page_type: 0xffffffff() [ 31.816592] raw: 0100000000000200 ffff8880087a0c80 ffffea00003c4e40 dead000000000008 [ 31.817466] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ef6d601 [ 31.818337] page dumped because: kasan: bad access detected [ 31.818966] [ 31.819169] Memory state around the buggy address: [ 31.819724] ffff88800d7c2a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.820550] ffff88800d7c2a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 31.821364] >ffff88800d7c2b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.822166] ^ [ 31.822750] ffff88800d7c2b80: fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 [ 31.823578] ffff88800d7c2c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 31.824379] ================================================================== [ 31.825434] Disabling lock debugging due to kernel taint [ 33.821089] BUG: Bad rss-counter state mm:00000000b3a030b5 type:MM_FILEPAGES val:33 [ 33.822050] BUG: Bad rss-counter state mm:00000000b3a030b5 type:MM_ANONPAGES val:22 [ 34.375160] BUG: Bad rss-counter state mm:00000000c9bc574d type:MM_FILEPAGES val:33 [ 34.376323] BUG: Bad rss-counter state mm:00000000c9bc574d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:51155' (ECDSA) to the list of known hosts. 2023/06/21 01:27:08 fuzzer started 2023/06/21 01:27:08 dialing manager at localhost:36067 2023/06/21 01:27:08 checking machine... 2023/06/21 01:27:08 checking revisions... [ 35.030142] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:27:09 testing simple program... [ 35.077482] cgroup: Unknown subsys name 'net' [ 35.118762] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:27:08 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff110011b3f8d RCX=ffffffff812d8f13 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000000 RSP=ffff888008d9fc50 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3d357 R11=0000000000000128 R12=0000000000000002 R13=0000000000000000 R14=ffffffff8560b520 R15=0000000000000000 RIP=ffffffff8180f020 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 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=00007f5ad3804e30 CR3=000000000c626000 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=2038303a37323a3130203132206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038303a37323a3130203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=00007fff3389b958 RBX=00005581e18c8f70 RCX=00000000e18d75be RDX=00000000000008b2 RSI=000000000000000a RDI=00005581e18d75be RBP=00007fff3389b950 RSP=00007fff3389b8e8 R8 =00005581e18d75be R9 =00007f2de79bbbe0 R10=0000000000000100 R11=0000000000000246 R12=00007f2de7409900 R13=00007fff3389b958 R14=00000000000008b2 R15=0000000000000000 RIP=00007f2de7958964 RFL=00000206 [-----P-] 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 00007f2de7409900 00000000 00000000 GS =0000 0000000000000000 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=00007fff33896000 CR3=000000000e856000 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=0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a XMM01=00000000000000000000000000000000 XMM02=2f00646f6874656d5f74707972636e65 XMM03=656420726f66203337373800006f6e09 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffffffffffffffffffffffff XMM08=20202020002020202020202000202020 XMM09=0000ffffffffffffffffffffffffffff XMM10=00002020202020200020202020202020 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000