[ 38.694311] BUG: Bad rss-counter state mm:000000005450f1fc type:MM_FILEPAGES val:33 [ 38.695754] BUG: Bad rss-counter state mm:000000005450f1fc type:MM_ANONPAGES val:22 [ 38.854507] ================================================================== [ 38.855409] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.856360] Read of size 8 at addr ffff88800d8b2c20 by task sshd/218 [ 38.857220] [ 38.857444] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.858326] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.859311] Call Trace: [ 38.859631] [ 38.859917] dump_stack_lvl+0x91/0xf0 [ 38.860408] print_report+0xcc/0x620 [ 38.860891] ? __virt_addr_valid+0x102/0x340 [ 38.861462] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.862086] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.862705] kasan_report+0xbe/0xf0 [ 38.863179] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.863803] vma_interval_tree_remove+0xc75/0xec0 [ 38.864413] vma_prepare+0xc54/0x11a0 [ 38.864889] __split_vma+0x5af/0x950 [ 38.865380] ? __pfx___split_vma+0x10/0x10 [ 38.865915] ? find_held_lock+0x2c/0x110 [ 38.866441] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.867019] ? lock_is_held_type+0x9f/0x120 [ 38.867569] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.868193] ? mtree_range_walk+0x632/0x900 [ 38.868752] ? mas_walk+0x5c7/0x7c0 [ 38.869227] do_vmi_munmap+0x1f1/0x2b0 [ 38.869720] mmap_region+0x1f9/0x2660 [ 38.870212] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.870726] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.871451] ? __pfx_lock_acquire+0x10/0x10 [ 38.871996] ? __pfx_mmap_region+0x10/0x10 [ 38.872525] ? security_mmap_addr+0x7d/0xa0 [ 38.873057] ? get_unmapped_area+0x1f5/0x3f0 [ 38.873629] do_mmap+0x854/0xf00 [ 38.874074] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.874568] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.875141] ksys_mmap_pgoff+0x3af/0x500 [ 38.875646] do_syscall_64+0x3f/0x90 [ 38.876126] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.876770] RIP: 0033:0x7fa7ade2cd82 [ 38.877223] 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 [ 38.879397] RSP: 002b:00007ffd1b0ee7a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.880310] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa7ade2cd82 [ 38.881161] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa7ad266000 [ 38.882019] RBP: 00007fa7ad266000 R08: 0000000000000009 R09: 0000000000001000 [ 38.882879] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b841155ec0 [ 38.883747] R13: 00007ffd1b0ee7c0 R14: 00007ffd1b0ee7f0 R15: 00007ffd1b0eeb50 [ 38.884620] [ 38.884918] [ 38.885135] Allocated by task 211: [ 38.885588] kasan_save_stack+0x22/0x50 [ 38.886098] kasan_set_track+0x25/0x30 [ 38.886602] __kasan_slab_alloc+0x59/0x70 [ 38.887132] kmem_cache_alloc+0x16b/0x370 [ 38.887655] vm_area_dup+0x20/0x160 [ 38.888118] __split_vma+0x170/0x950 [ 38.888595] split_vma+0xc6/0x110 [ 38.889039] mprotect_fixup+0x8d2/0xb30 [ 38.889543] do_mprotect_pkey+0x87e/0xd40 [ 38.890080] __x64_sys_mprotect+0x78/0xc0 [ 38.890612] do_syscall_64+0x3f/0x90 [ 38.891090] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.891744] [ 38.891962] Freed by task 211: [ 38.892350] kasan_save_stack+0x22/0x50 [ 38.892855] kasan_set_track+0x25/0x30 [ 38.893372] kasan_save_free_info+0x2b/0x50 [ 38.893906] __kasan_slab_free+0x10a/0x190 [ 38.894442] kmem_cache_free+0x10d/0x4d0 [ 38.894952] rcu_core+0x8c8/0x2860 [ 38.895398] __do_softirq+0x1b7/0x7d4 [ 38.895874] [ 38.896091] Last potentially related work creation: [ 38.896680] kasan_save_stack+0x22/0x50 [ 38.897182] __kasan_record_aux_stack+0x8e/0xa0 [ 38.897764] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.898407] remove_vma+0x139/0x170 [ 38.898859] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.899413] do_vmi_munmap+0x1f1/0x2b0 [ 38.899907] __vm_munmap+0x138/0x3a0 [ 38.900372] __x64_sys_munmap+0x59/0x80 [ 38.900869] do_syscall_64+0x3f/0x90 [ 38.901359] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.902002] [ 38.902225] Second to last potentially related work creation: [ 38.902907] kasan_save_stack+0x22/0x50 [ 38.903425] __kasan_record_aux_stack+0x8e/0xa0 [ 38.904001] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.904652] remove_vma+0x139/0x170 [ 38.905106] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.905687] do_vmi_munmap+0x1f1/0x2b0 [ 38.906179] mmap_region+0x1f9/0x2660 [ 38.906658] do_mmap+0x854/0xf00 [ 38.907091] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.907574] ksys_mmap_pgoff+0x3af/0x500 [ 38.908077] do_syscall_64+0x3f/0x90 [ 38.908554] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.909196] [ 38.909421] The buggy address belongs to the object at ffff88800d8b2bc8 [ 38.909421] which belongs to the cache vm_area_struct of size 168 [ 38.910883] The buggy address is located 88 bytes inside of [ 38.910883] freed 168-byte region [ffff88800d8b2bc8, ffff88800d8b2c70) [ 38.912288] [ 38.912507] The buggy address belongs to the physical page: [ 38.913165] page:000000003001586b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd8b2 [ 38.914267] memcg:ffff88800d693e01 [ 38.914697] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.915344] page_type: 0xffffffff() [ 38.915813] raw: 0100000000000200 ffff8880087a0c80 ffffea0000385000 dead000000000004 [ 38.916760] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d693e01 [ 38.917680] page dumped because: kasan: bad access detected [ 38.918350] [ 38.918566] Memory state around the buggy address: [ 38.919147] ffff88800d8b2b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.920012] ffff88800d8b2b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 38.920872] >ffff88800d8b2c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 38.921741] ^ [ 38.922264] ffff88800d8b2c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 38.923116] ffff88800d8b2d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 38.923968] ================================================================== [ 38.924958] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 40.558922] BUG: Bad rss-counter state mm:00000000d88abcd7 type:MM_FILEPAGES val:33 [ 40.559519] BUG: Bad rss-counter state mm:00000000d88abcd7 type:MM_ANONPAGES val:22 [ 40.965492] BUG: Bad rss-counter state mm:000000006a7ce9af type:MM_FILEPAGES val:33 [ 40.966253] BUG: Bad rss-counter state mm:000000006a7ce9af type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:65066' (ECDSA) to the list of known hosts. 2023/06/20 16:09:18 fuzzer started 2023/06/20 16:09:18 dialing manager at localhost:36067 2023/06/20 16:09:18 checking machine... 2023/06/20 16:09:18 checking revisions... [ 41.557693] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:09:18 testing simple program... [ 41.613008] cgroup: Unknown subsys name 'net' [ 41.674549] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:09:18 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007f96e393ab00 CR3=000000000c4e0000 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=1051c70a6e0863a167491f795bf50b6f XMM02=2c67c8bc2e329bc3000000000011c900 XMM03=fb795ef6d65770560000000000122f10 XMM04=37848757ade5ab1500000000000ae988 XMM05=72537065a9fce8460000000000134fb8 XMM06=bdf2e299e47b49d50000000000133ce8 XMM07=e042d86d42eb936e00000000001231e8 XMM08=c14a9b908ea803ed000000000011c960 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=000000008b90e6da RBX=00000000f525c4aa RCX=ffff8880145f7aac RDX=000000000000000c RSI=0000000000000009 RDI=00000000b0d5c086 RBP=ffff8880087b8780 RSP=ffff8880145f7a08 R8 =000000003d36d06a R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000001 R13=0000000000000dc0 R14=ffff8880145f7a70 R15=000000000000000c RIP=ffffffff82270457 RFL=00000a07 [-O---PC] 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 00007f9c29c36900 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=00007ffc9402f000 CR3=00000000175f0000 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=00000000000000000000000000000000 XMM01=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000