[ OK ] Finished Update UTMP about System Runlevel Changes. [ 31.177046] BUG: Bad rss-counter state mm:00000000b98e743a type:MM_FILEPAGES val:33 [ 31.177080] BUG: Bad rss-counter state mm:00000000b98e743a type:MM_ANONPAGES val:22 [ 31.672091] ================================================================== [ 31.673032] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.673974] Read of size 8 at addr ffff88800fd33c20 by task sshd/220 [ 31.674843] [ 31.675090] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.675962] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.676974] Call Trace: [ 31.677292] [ 31.677576] dump_stack_lvl+0x91/0xf0 [ 31.678086] print_report+0xcc/0x620 [ 31.678573] ? __virt_addr_valid+0x102/0x340 [ 31.679142] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.679753] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.680361] kasan_report+0xbe/0xf0 [ 31.680833] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.681455] vma_interval_tree_remove+0xc75/0xec0 [ 31.682053] vma_prepare+0xc54/0x11a0 [ 31.682533] __split_vma+0x5af/0x950 [ 31.683014] ? __pfx___split_vma+0x10/0x10 [ 31.683538] ? find_held_lock+0x2c/0x110 [ 31.684052] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.684608] ? lock_is_held_type+0x9f/0x120 [ 31.685145] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.685760] ? mtree_range_walk+0x632/0x900 [ 31.686318] ? mas_walk+0x5c7/0x7c0 [ 31.686789] do_vmi_munmap+0x1f1/0x2b0 [ 31.687298] mmap_region+0x1f9/0x2660 [ 31.687777] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.688279] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.689016] ? __pfx_lock_acquire+0x10/0x10 [ 31.689575] ? __pfx_mmap_region+0x10/0x10 [ 31.690130] ? security_mmap_addr+0x7d/0xa0 [ 31.690677] ? get_unmapped_area+0x1f5/0x3f0 [ 31.691250] do_mmap+0x854/0xf00 [ 31.691704] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.692210] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.692790] ksys_mmap_pgoff+0x3af/0x500 [ 31.693309] do_syscall_64+0x3f/0x90 [ 31.693787] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.694437] RIP: 0033:0x7f113ead8d82 [ 31.694901] 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 [ 31.697122] RSP: 002b:00007ffd8f040088 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.698054] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f113ead8d82 [ 31.698948] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f113df12000 [ 31.699831] RBP: 00007f113df12000 R08: 0000000000000009 R09: 0000000000001000 [ 31.700702] R10: 0000000000000812 R11: 0000000000000206 R12: 000055eb60df1ec0 [ 31.701585] R13: 00007ffd8f0400a0 R14: 00007ffd8f0400d0 R15: 00007ffd8f040430 [ 31.702460] [ 31.702764] [ 31.702996] Allocated by task 207: [ 31.703436] kasan_save_stack+0x22/0x50 [ 31.703952] kasan_set_track+0x25/0x30 [ 31.704466] __kasan_slab_alloc+0x59/0x70 [ 31.705012] kmem_cache_alloc+0x16b/0x370 [ 31.705523] vm_area_dup+0x20/0x160 [ 31.705990] __split_vma+0x170/0x950 [ 31.706472] split_vma+0xc6/0x110 [ 31.706928] mprotect_fixup+0x8d2/0xb30 [ 31.707427] do_mprotect_pkey+0x87e/0xd40 [ 31.707959] __x64_sys_mprotect+0x78/0xc0 [ 31.708481] do_syscall_64+0x3f/0x90 [ 31.708957] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.709601] [ 31.709820] Freed by task 203: [ 31.710213] kasan_save_stack+0x22/0x50 [ 31.710713] kasan_set_track+0x25/0x30 [ 31.711221] kasan_save_free_info+0x2b/0x50 [ 31.711751] __kasan_slab_free+0x10a/0x190 [ 31.712282] kmem_cache_free+0x10d/0x4d0 [ 31.712787] rcu_core+0x8c8/0x2860 [ 31.713229] __do_softirq+0x1b7/0x7d4 [ 31.713705] [ 31.713919] Last potentially related work creation: [ 31.714505] kasan_save_stack+0x22/0x50 [ 31.715012] __kasan_record_aux_stack+0x8e/0xa0 [ 31.715590] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.716230] remove_vma+0x139/0x170 [ 31.716684] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.717270] do_vmi_munmap+0x1f1/0x2b0 [ 31.717774] __vm_munmap+0x138/0x3a0 [ 31.718244] __x64_sys_munmap+0x59/0x80 [ 31.718744] do_syscall_64+0x3f/0x90 [ 31.719238] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.719912] [ 31.720132] The buggy address belongs to the object at ffff88800fd33bc8 [ 31.720132] which belongs to the cache vm_area_struct of size 168 [ 31.721609] The buggy address is located 88 bytes inside of [ 31.721609] freed 168-byte region [ffff88800fd33bc8, ffff88800fd33c70) [ 31.723018] [ 31.723232] The buggy address belongs to the physical page: [ 31.723896] page:00000000acbfc824 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfd33 [ 31.724983] memcg:ffff888018dbe301 [ 31.725407] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.726046] page_type: 0xffffffff() [ 31.726496] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.727438] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888018dbe301 [ 31.728343] page dumped because: kasan: bad access detected [ 31.728997] [ 31.729211] Memory state around the buggy address: [ 31.729792] ffff88800fd33b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.730636] ffff88800fd33b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 31.731481] >ffff88800fd33c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.732312] ^ [ 31.732835] ffff88800fd33c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 31.733680] ffff88800fd33d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 31.734520] ================================================================== [ 31.735587] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.659162] BUG: Bad rss-counter state mm:00000000beec93cb type:MM_FILEPAGES val:33 [ 33.659991] BUG: Bad rss-counter state mm:00000000beec93cb type:MM_ANONPAGES val:22 [ 34.120501] BUG: Bad rss-counter state mm:00000000b5c32325 type:MM_FILEPAGES val:33 [ 34.121687] BUG: Bad rss-counter state mm:00000000b5c32325 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:43317' (ECDSA) to the list of known hosts. 2023/06/20 17:21:20 fuzzer started 2023/06/20 17:21:20 dialing manager at localhost:36067 2023/06/20 17:21:20 checking machine... 2023/06/20 17:21:20 checking revisions... [ 34.828528] kmemleak: Automatic memory scanning thread ended 2023/06/20 17:21:20 testing simple program... [ 34.872718] cgroup: Unknown subsys name 'net' [ 34.935234] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:21:20 Registers: info registers vcpu 0 RAX=1ffff11001d3dd43 RBX=ffff88800e9ee9e8 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800e9eea18 RBP=ffff888019f80000 RSP=ffff8880102778e8 R8 =0000000000000001 R9 =ffffed100204ef11 R10=0000000000000003 R11=00000000000b6a61 R12=dffffc0000000000 R13=ffff888019f12b40 R14=ffffffff8366b8df R15=ffff88800cf93a00 RIP=ffffffff818464e2 RFL=00000046 [---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 00007fab015b9900 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=00007fa722ab0650 CR3=0000000013a54000 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=383f490006bc1aae0740ab348c1d0e81 XMM02=000000000011afa0d59e07bde36eea69 XMM03=000000000011b0c8ec2efd57dc4c00df XMM04=12b80db4ffe3cd0900000000000ae988 XMM05=4ba78fdf4670ae2400000000001329d0 XMM06=ae9b264101391a5b0000000000131450 XMM07=fb795ef6d657705600000000001209a8 XMM08=2c67c8bc2e329bc3000000000011b0c8 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=0000565012774768 CR3=00000000198cc000 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=2039313a31323a3731203032206e754a XMM01=73732878696e755f6d6170203a5d3433 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3433325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039313a31323a3731203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000