syzkaller login: [ 38.865450] BUG: Bad rss-counter state mm:000000007c96be58 type:MM_FILEPAGES val:33 [ 38.866706] BUG: Bad rss-counter state mm:000000007c96be58 type:MM_ANONPAGES val:22 [ 38.907848] ================================================================== [ 38.909007] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.910085] Read of size 8 at addr ffff88800d5f6ed8 by task sshd/220 [ 38.910897] [ 38.911134] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.912059] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.913123] Call Trace: [ 38.913467] [ 38.913772] dump_stack_lvl+0x91/0xf0 [ 38.914292] print_report+0xcc/0x620 [ 38.914807] ? __virt_addr_valid+0x102/0x340 [ 38.915395] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.916052] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.916746] kasan_report+0xbe/0xf0 [ 38.917261] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.917944] vma_interval_tree_remove+0xc75/0xec0 [ 38.918598] vma_prepare+0xc54/0x11a0 [ 38.919132] __split_vma+0x5af/0x950 [ 38.919658] ? __pfx___split_vma+0x10/0x10 [ 38.920251] ? find_held_lock+0x2c/0x110 [ 38.920841] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.921471] ? lock_is_held_type+0x9f/0x120 [ 38.922070] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.922750] ? mtree_range_walk+0x632/0x900 [ 38.923367] ? mas_walk+0x5c7/0x7c0 [ 38.923899] do_vmi_munmap+0x1f1/0x2b0 [ 38.924447] mmap_region+0x1f9/0x2660 [ 38.925005] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.925574] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.926363] ? __pfx_lock_acquire+0x10/0x10 [ 38.926957] ? __pfx_mmap_region+0x10/0x10 [ 38.927540] ? security_mmap_addr+0x7d/0xa0 [ 38.928139] ? get_unmapped_area+0x1f5/0x3f0 [ 38.928750] do_mmap+0x854/0xf00 [ 38.929239] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.929790] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.930412] ksys_mmap_pgoff+0x3af/0x500 [ 38.930978] do_syscall_64+0x3f/0x90 [ 38.931508] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.932229] RIP: 0033:0x7fd512d90d82 [ 38.932747] 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 [ 38.935111] RSP: 002b:00007ffc2f8f6558 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.936123] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd512d90d82 [ 38.937090] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd5121ca000 [ 38.938034] RBP: 00007fd5121ca000 R08: 0000000000000009 R09: 0000000000001000 [ 38.938976] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561cab2def70 [ 38.939911] R13: 00007ffc2f8f6570 R14: 00007ffc2f8f65a0 R15: 00007ffc2f8f6900 [ 38.940857] [ 38.941175] [ 38.941414] Allocated by task 213: [ 38.941887] kasan_save_stack+0x22/0x50 [ 38.942447] kasan_set_track+0x25/0x30 [ 38.942995] __kasan_slab_alloc+0x59/0x70 [ 38.943581] kmem_cache_alloc+0x16b/0x370 [ 38.944158] vm_area_dup+0x20/0x160 [ 38.944682] __split_vma+0x170/0x950 [ 38.945203] split_vma+0xc6/0x110 [ 38.945689] mprotect_fixup+0x8d2/0xb30 [ 38.946255] do_mprotect_pkey+0x87e/0xd40 [ 38.946832] __x64_sys_mprotect+0x78/0xc0 [ 38.947412] do_syscall_64+0x3f/0x90 [ 38.947943] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.948663] [ 38.948902] Freed by task 19: [ 38.949328] kasan_save_stack+0x22/0x50 [ 38.949872] kasan_set_track+0x25/0x30 [ 38.950395] kasan_save_free_info+0x2b/0x50 [ 38.950966] __kasan_slab_free+0x10a/0x190 [ 38.951538] kmem_cache_free+0x10d/0x4d0 [ 38.952081] rcu_core+0x8c8/0x2860 [ 38.952560] __do_softirq+0x1b7/0x7d4 [ 38.953086] [ 38.953320] Last potentially related work creation: [ 38.953965] kasan_save_stack+0x22/0x50 [ 38.954523] __kasan_record_aux_stack+0x8e/0xa0 [ 38.955157] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.955864] remove_vma+0x139/0x170 [ 38.956361] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.956984] do_vmi_munmap+0x1f1/0x2b0 [ 38.957527] __vm_munmap+0x138/0x3a0 [ 38.958048] __x64_sys_munmap+0x59/0x80 [ 38.958596] do_syscall_64+0x3f/0x90 [ 38.959123] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.959838] [ 38.960074] Second to last potentially related work creation: [ 38.960840] kasan_save_stack+0x22/0x50 [ 38.961393] __kasan_record_aux_stack+0x8e/0xa0 [ 38.962032] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.962736] remove_vma+0x139/0x170 [ 38.963238] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.963855] do_vmi_munmap+0x1f1/0x2b0 [ 38.964395] mmap_region+0x1f9/0x2660 [ 38.964937] do_mmap+0x854/0xf00 [ 38.965413] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.965955] ksys_mmap_pgoff+0x3af/0x500 [ 38.966511] do_syscall_64+0x3f/0x90 [ 38.967040] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.967750] [ 38.967988] The buggy address belongs to the object at ffff88800d5f6e80 [ 38.967988] which belongs to the cache vm_area_struct of size 168 [ 38.969631] The buggy address is located 88 bytes inside of [ 38.969631] freed 168-byte region [ffff88800d5f6e80, ffff88800d5f6f28) [ 38.971194] [ 38.971430] The buggy address belongs to the physical page: [ 38.972150] page:00000000b97c4dc8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd5f6 [ 38.973361] memcg:ffff88800d662201 [ 38.973835] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.974551] page_type: 0xffffffff() [ 38.975049] raw: 0100000000000200 ffff8880087a0c80 ffffea00003c7dc0 dead000000000004 [ 38.976066] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d662201 [ 38.977073] page dumped because: kasan: bad access detected [ 38.977811] [ 38.978048] Memory state around the buggy address: [ 38.978680] ffff88800d5f6d80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.979619] ffff88800d5f6e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 38.980574] >ffff88800d5f6e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.981536] ^ [ 38.982337] ffff88800d5f6f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 38.983279] ffff88800d5f6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 38.984220] ================================================================== [ 38.985492] Disabling lock debugging due to kernel taint [ 40.964287] BUG: Bad rss-counter state mm:00000000d35e119c type:MM_FILEPAGES val:33 [ 40.965463] BUG: Bad rss-counter state mm:00000000d35e119c type:MM_ANONPAGES val:22 [ 41.520497] BUG: Bad rss-counter state mm:0000000007257de8 type:MM_FILEPAGES val:33 [ 41.521912] BUG: Bad rss-counter state mm:0000000007257de8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18790' (ECDSA) to the list of known hosts. 2023/06/20 11:25:15 fuzzer started 2023/06/20 11:25:15 dialing manager at localhost:36067 2023/06/20 11:25:15 checking machine... 2023/06/20 11:25:15 checking revisions... [ 42.167644] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:25:15 testing simple program... [ 42.219911] cgroup: Unknown subsys name 'net' [ 42.271846] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:25:14 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=0000000000000001 RCX=ffffffff816ecdea RDX=ffff888010373680 RSI=0000000000000000 RDI=0000000000000001 RBP=dffffc0000000000 RSP=ffff888014697530 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000001 R12=ffff888014652000 R13=0000000000000cc0 R14=0000000000000cc0 R15=0000000000000cc0 RIP=ffffffff814c0261 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 00007ff3d889a900 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=00007ff3d7cb34e0 CR3=000000000c9d2000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=dacce0f284b938fd00000000000ae988 XMM05=c363a3316c683f8700000000001341f8 XMM06=4fda316b135da52b0000000000132c78 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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 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=00007f195097b618 CR3=000000000e134000 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=2034313a35323a3131203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034313a35323a3131203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000