syzkaller login: [ 61.778504] BUG: Bad rss-counter state mm:0000000024ca0eec type:MM_FILEPAGES val:33 [ 61.779911] BUG: Bad rss-counter state mm:0000000024ca0eec type:MM_ANONPAGES val:22 [ 61.923624] ================================================================== [ 61.924704] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 61.925832] Read of size 8 at addr ffff88800e147b38 by task sshd/220 [ 61.926858] [ 61.927081] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 61.927964] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 61.928969] Call Trace: [ 61.929300] [ 61.929597] dump_stack_lvl+0x91/0xf0 [ 61.930098] print_report+0xcc/0x620 [ 61.930589] ? __virt_addr_valid+0x102/0x340 [ 61.931149] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.931780] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.932401] kasan_report+0xbe/0xf0 [ 61.932889] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.933535] vma_interval_tree_remove+0xc75/0xec0 [ 61.934149] vma_prepare+0xc54/0x11a0 [ 61.934630] __split_vma+0x5af/0x950 [ 61.935117] ? __pfx___split_vma+0x10/0x10 [ 61.935655] ? find_held_lock+0x2c/0x110 [ 61.936186] do_vmi_align_munmap+0x2ba/0x11f0 [ 61.936762] ? lock_is_held_type+0x9f/0x120 [ 61.937328] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 61.937948] ? mtree_range_walk+0x632/0x900 [ 61.938522] ? mas_walk+0x5c7/0x7c0 [ 61.939010] do_vmi_munmap+0x1f1/0x2b0 [ 61.939507] mmap_region+0x1f9/0x2660 [ 61.939998] ? vm_mmap_pgoff+0x15c/0x3a0 [ 61.940515] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 61.941242] ? __pfx_lock_acquire+0x10/0x10 [ 61.941795] ? __pfx_mmap_region+0x10/0x10 [ 61.942345] ? security_mmap_addr+0x7d/0xa0 [ 61.942887] ? get_unmapped_area+0x1f5/0x3f0 [ 61.943450] do_mmap+0x854/0xf00 [ 61.943900] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.944408] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 61.945004] ksys_mmap_pgoff+0x3af/0x500 [ 61.945529] do_syscall_64+0x3f/0x90 [ 61.946024] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.946676] RIP: 0033:0x7f25942f5d82 [ 61.947149] 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 [ 61.949324] RSP: 002b:00007ffe3f567248 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 61.950254] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f25942f5d82 [ 61.951119] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f259372f000 [ 61.951981] RBP: 00007f259372f000 R08: 0000000000000009 R09: 0000000000001000 [ 61.952840] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561e3ed81980 [ 61.953705] R13: 00007ffe3f567260 R14: 00007ffe3f567290 R15: 00007ffe3f5675f0 [ 61.954571] [ 61.954872] [ 61.955095] Allocated by task 213: [ 61.955536] kasan_save_stack+0x22/0x50 [ 61.956053] kasan_set_track+0x25/0x30 [ 61.956554] __kasan_slab_alloc+0x59/0x70 [ 61.957107] kmem_cache_alloc+0x16b/0x370 [ 61.957639] vm_area_dup+0x20/0x160 [ 61.958111] __split_vma+0x170/0x950 [ 61.958591] split_vma+0xc6/0x110 [ 61.959049] mprotect_fixup+0x8d2/0xb30 [ 61.959564] do_mprotect_pkey+0x87e/0xd40 [ 61.960097] __x64_sys_mprotect+0x78/0xc0 [ 61.960626] do_syscall_64+0x3f/0x90 [ 61.961118] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.961781] [ 61.962000] Freed by task 213: [ 61.962403] kasan_save_stack+0x22/0x50 [ 61.962915] kasan_set_track+0x25/0x30 [ 61.963413] kasan_save_free_info+0x2b/0x50 [ 61.963949] __kasan_slab_free+0x10a/0x190 [ 61.964490] kmem_cache_free+0x10d/0x4d0 [ 61.965010] rcu_core+0x8c8/0x2860 [ 61.965460] __do_softirq+0x1b7/0x7d4 [ 61.965945] [ 61.966167] Last potentially related work creation: [ 61.966761] kasan_save_stack+0x22/0x50 [ 61.967270] __kasan_record_aux_stack+0x8e/0xa0 [ 61.967926] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.968571] remove_vma+0x139/0x170 [ 61.969049] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.969608] do_vmi_munmap+0x1f1/0x2b0 [ 61.970110] __vm_munmap+0x138/0x3a0 [ 61.970596] __x64_sys_munmap+0x59/0x80 [ 61.971111] do_syscall_64+0x3f/0x90 [ 61.971600] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.972256] [ 61.972480] Second to last potentially related work creation: [ 61.973185] kasan_save_stack+0x22/0x50 [ 61.973707] __kasan_record_aux_stack+0x8e/0xa0 [ 61.974293] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.974944] remove_vma+0x139/0x170 [ 61.975408] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.975974] do_vmi_munmap+0x1f1/0x2b0 [ 61.976467] mmap_region+0x1f9/0x2660 [ 61.976956] do_mmap+0x854/0xf00 [ 61.977425] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.977924] ksys_mmap_pgoff+0x3af/0x500 [ 61.978433] do_syscall_64+0x3f/0x90 [ 61.978914] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.979567] [ 61.979790] The buggy address belongs to the object at ffff88800e147ae0 [ 61.979790] which belongs to the cache vm_area_struct of size 168 [ 61.981296] The buggy address is located 88 bytes inside of [ 61.981296] freed 168-byte region [ffff88800e147ae0, ffff88800e147b88) [ 61.982716] [ 61.982935] The buggy address belongs to the physical page: [ 61.983593] page:0000000022dedd3a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe147 [ 61.984693] memcg:ffff88800e749b01 [ 61.985135] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 61.985833] page_type: 0xffffffff() [ 61.986293] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 61.987225] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e749b01 [ 61.988138] page dumped because: kasan: bad access detected [ 61.988815] [ 61.989050] Memory state around the buggy address: [ 61.989645] ffff88800e147a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.990504] ffff88800e147a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 61.991374] >ffff88800e147b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.992234] ^ [ 61.992846] ffff88800e147b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 61.993727] ffff88800e147c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 61.994593] ================================================================== [ 61.995556] Disabling lock debugging due to kernel taint [ 63.872190] BUG: Bad rss-counter state mm:000000003ecc8715 type:MM_FILEPAGES val:33 [ 63.873359] BUG: Bad rss-counter state mm:000000003ecc8715 type:MM_ANONPAGES val:22 [ 64.344802] BUG: Bad rss-counter state mm:00000000543b4f5d type:MM_FILEPAGES val:33 [ 64.346008] BUG: Bad rss-counter state mm:00000000543b4f5d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4874' (ECDSA) to the list of known hosts. 2023/06/20 17:37:51 fuzzer started 2023/06/20 17:37:51 dialing manager at localhost:36067 2023/06/20 17:37:51 checking machine... 2023/06/20 17:37:51 checking revisions... [ 64.960889] kmemleak: Automatic memory scanning thread ended 2023/06/20 17:37:51 testing simple program... [ 65.015885] cgroup: Unknown subsys name 'net' [ 65.056992] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:37:51 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffffff85652b60 RCX=ffffffff814c84a1 RDX=0000000000000000 RSI=0000000000000000 RDI=0000000000000000 RBP=0000000000000000 RSP=ffff88806ce09a18 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b54e7 R12=ffffffff866212df R13=0000000000000000 R14=ffffffff8542a6c0 R15=ffff88800e037080 RIP=ffffffff814c0408 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=00007ffd32453ba8 CR3=0000000005482000 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=00007ff4cb4d6510000055de6e1b2790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=1ffff11001e59f6d RCX=0000000000000000 RDX=0000000000000001 RSI=0000000000000000 RDI=ffff88806cf40158 RBP=0000000000000001 RSP=ffff88800f2cfb58 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000003 R11=00000000000d0000 R12=0000000000000000 R13=0000000000000001 R14=ffff88806cf40158 R15=0000000000000000 RIP=ffffffff812d8ead RFL=00000212 [----A--] 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 00007f95e7cdc900 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=00007f95e82940b0 CR3=000000000ed88000 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=25252525252525252525252525252525 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=662079726f6d656d20666f2074756f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000