[ 25.639878] BUG: Bad rss-counter state mm:00000000167b2633 type:MM_FILEPAGES val:33 [ 25.641071] BUG: Bad rss-counter state mm:00000000167b2633 type:MM_ANONPAGES val:22 [ 25.792312] ================================================================== [ 25.793427] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 25.794431] Read of size 8 at addr ffff88801bc79880 by task sshd/219 [ 25.795300] [ 25.795518] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 25.796406] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 25.797417] Call Trace: [ 25.797741] <TASK> [ 25.798023] dump_stack_lvl+0x91/0xf0 [ 25.798509] print_report+0xcc/0x620 [ 25.798987] ? __virt_addr_valid+0x102/0x340 [ 25.799538] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.800153] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.800780] kasan_report+0xbe/0xf0 [ 25.801274] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.801906] vma_interval_tree_remove+0xc75/0xec0 [ 25.802513] vma_prepare+0xc54/0x11a0 [ 25.803003] __split_vma+0x5af/0x950 [ 25.803479] ? __pfx___split_vma+0x10/0x10 [ 25.804023] ? find_held_lock+0x2c/0x110 [ 25.804537] do_vmi_align_munmap+0x2ba/0x11f0 [ 25.805107] ? lock_is_held_type+0x9f/0x120 [ 25.805665] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 25.806269] ? mtree_range_walk+0x632/0x900 [ 25.806817] ? mas_walk+0x5c7/0x7c0 [ 25.807288] do_vmi_munmap+0x1f1/0x2b0 [ 25.807781] mmap_region+0x1f9/0x2660 [ 25.808264] ? vm_mmap_pgoff+0x15c/0x3a0 [ 25.808769] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 25.809481] ? __pfx_lock_acquire+0x10/0x10 [ 25.810023] ? __pfx_mmap_region+0x10/0x10 [ 25.810556] ? security_mmap_addr+0x7d/0xa0 [ 25.811090] ? get_unmapped_area+0x1f5/0x3f0 [ 25.811640] do_mmap+0x854/0xf00 [ 25.812086] vm_mmap_pgoff+0x1a6/0x3a0 [ 25.812580] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 25.813145] ksys_mmap_pgoff+0x3af/0x500 [ 25.813657] do_syscall_64+0x3f/0x90 [ 25.814139] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.814791] RIP: 0033:0x7f6532354d82 [ 25.815254] 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 [ 25.817396] RSP: 002b:00007ffcf1a991b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 25.818296] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6532354d82 [ 25.819156] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f653178e000 [ 25.820010] RBP: 00007f653178e000 R08: 0000000000000009 R09: 0000000000001000 [ 25.820843] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b85fc02ec0 [ 25.821695] R13: 00007ffcf1a991d0 R14: 00007ffcf1a99200 R15: 00007ffcf1a99560 [ 25.822555] </TASK> [ 25.822852] [ 25.823070] Allocated by task 208: [ 25.823508] kasan_save_stack+0x22/0x50 [ 25.824009] kasan_set_track+0x25/0x30 [ 25.824506] __kasan_slab_alloc+0x59/0x70 [ 25.825029] kmem_cache_alloc+0x16b/0x370 [ 25.825560] vm_area_dup+0x20/0x160 [ 25.826022] __split_vma+0x170/0x950 [ 25.826496] split_vma+0xc6/0x110 [ 25.826942] mprotect_fixup+0x8d2/0xb30 [ 25.827454] do_mprotect_pkey+0x87e/0xd40 [ 25.827974] __x64_sys_mprotect+0x78/0xc0 [ 25.828499] do_syscall_64+0x3f/0x90 [ 25.828969] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.829617] [ 25.829831] Freed by task 19: [ 25.830214] kasan_save_stack+0x22/0x50 [ 25.830717] kasan_set_track+0x25/0x30 [ 25.831214] kasan_save_free_info+0x2b/0x50 [ 25.831743] __kasan_slab_free+0x10a/0x190 [ 25.832267] kmem_cache_free+0x10d/0x4d0 [ 25.832770] rcu_core+0x8c8/0x2860 [ 25.833231] __do_softirq+0x1b7/0x7d4 [ 25.833704] [ 25.833921] Last potentially related work creation: [ 25.834506] kasan_save_stack+0x22/0x50 [ 25.835016] __kasan_record_aux_stack+0x8e/0xa0 [ 25.835599] __call_rcu_common.constprop.0+0x6a/0xb90 [ 25.836250] remove_vma+0x139/0x170 [ 25.836708] do_vmi_align_munmap+0xd4a/0x11f0 [ 25.837270] do_vmi_munmap+0x1f1/0x2b0 [ 25.837752] __vm_munmap+0x138/0x3a0 [ 25.838228] __x64_sys_munmap+0x59/0x80 [ 25.838733] do_syscall_64+0x3f/0x90 [ 25.839205] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.839846] [ 25.840063] The buggy address belongs to the object at ffff88801bc79828 [ 25.840063] which belongs to the cache vm_area_struct of size 168 [ 25.841555] The buggy address is located 88 bytes inside of [ 25.841555] freed 168-byte region [ffff88801bc79828, ffff88801bc798d0) [ 25.842979] [ 25.843192] The buggy address belongs to the physical page: [ 25.843842] page:000000009ac4ad36 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1bc79 [ 25.844946] memcg:ffff88801a3ceb01 [ 25.845403] flags: 0x100000000000200(slab|node=0|zone=1) [ 25.846064] page_type: 0xffffffff() [ 25.846523] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 25.847451] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a3ceb01 [ 25.848358] page dumped because: kasan: bad access detected [ 25.849014] [ 25.849246] Memory state around the buggy address: [ 25.849829] ffff88801bc79780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 25.850699] ffff88801bc79800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 25.851574] >ffff88801bc79880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 25.852430] ^ [ 25.852842] ffff88801bc79900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.853715] ffff88801bc79980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 25.854558] ================================================================== [ 25.855617] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 27.754810] BUG: Bad rss-counter state mm:00000000ea153d50 type:MM_FILEPAGES val:33 [ 27.756086] BUG: Bad rss-counter state mm:00000000ea153d50 type:MM_ANONPAGES val:22 [ 28.113178] BUG: Bad rss-counter state mm:00000000fda4f354 type:MM_FILEPAGES val:33 [ 28.114008] BUG: Bad rss-counter state mm:00000000fda4f354 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:26263' (ECDSA) to the list of known hosts. 2023/06/19 22:18:01 fuzzer started 2023/06/19 22:18:01 dialing manager at localhost:44161 2023/06/19 22:18:01 checking machine... 2023/06/19 22:18:01 checking revisions... [ 28.725147] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:18:02 testing simple program... [ 28.781553] cgroup: Unknown subsys name 'net' [ 28.838542] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:18:00 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007fa6180fe3e0 CR3=0000000019dfa000 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=2031303a38313a3232203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031303a38313a3232203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000011 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000011 RDI=ffff8880164d6e10 RBP=0000000000000000 RSP=ffff8880164d6e00 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=0000000000000000 R13=ffff88801a2e5208 R14=ffff8880164d7e70 R15=ffff8880164d71f8 RIP=ffffffff82270df6 RFL=00000287 [--S--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 00007f31b51a7900 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=00007f31b5171008 CR3=000000000e872000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000