[ 118.161257] BUG: Bad rss-counter state mm:0000000038389e1a type:MM_FILEPAGES val:33 [ 118.162923] BUG: Bad rss-counter state mm:0000000038389e1a type:MM_ANONPAGES val:22 [ 118.321580] ================================================================== [ 118.322512] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 118.323474] Read of size 8 at addr ffff88800ed11140 by task sshd/219 [ 118.324262] [ 118.324477] CPU: 1 PID: 219 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 118.325687] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 118.326688] Call Trace: [ 118.327022] [ 118.327328] dump_stack_lvl+0x91/0xf0 [ 118.327827] print_report+0xcc/0x620 [ 118.328322] ? __virt_addr_valid+0x102/0x340 [ 118.328902] ? vma_interval_tree_remove+0xc75/0xec0 [ 118.329561] ? vma_interval_tree_remove+0xc75/0xec0 [ 118.330202] kasan_report+0xbe/0xf0 [ 118.330688] ? vma_interval_tree_remove+0xc75/0xec0 [ 118.331326] vma_interval_tree_remove+0xc75/0xec0 [ 118.331930] vma_prepare+0xc54/0x11a0 [ 118.332408] __split_vma+0x5af/0x950 [ 118.332888] ? __pfx___split_vma+0x10/0x10 [ 118.333416] ? find_held_lock+0x2c/0x110 [ 118.333940] do_vmi_align_munmap+0x2ba/0x11f0 [ 118.334500] ? lock_is_held_type+0x9f/0x120 [ 118.335043] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 118.335657] ? mtree_range_walk+0x632/0x900 [ 118.336210] ? mas_walk+0x5c7/0x7c0 [ 118.336681] do_vmi_munmap+0x1f1/0x2b0 [ 118.337199] mmap_region+0x1f9/0x2660 [ 118.337689] ? vm_mmap_pgoff+0x15c/0x3a0 [ 118.338215] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 118.338926] ? __pfx_lock_acquire+0x10/0x10 [ 118.339465] ? __pfx_mmap_region+0x10/0x10 [ 118.339994] ? security_mmap_addr+0x7d/0xa0 [ 118.340523] ? get_unmapped_area+0x1f5/0x3f0 [ 118.341089] do_mmap+0x854/0xf00 [ 118.341527] vm_mmap_pgoff+0x1a6/0x3a0 [ 118.342022] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 118.342581] ksys_mmap_pgoff+0x3af/0x500 [ 118.343094] do_syscall_64+0x3f/0x90 [ 118.343571] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 118.344228] RIP: 0033:0x7fe1f036bd82 [ 118.344690] 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 [ 118.346820] RSP: 002b:00007fff16dd2598 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 118.347727] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe1f036bd82 [ 118.348579] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe1ef7a5000 [ 118.349444] RBP: 00007fe1ef7a5000 R08: 0000000000000009 R09: 0000000000001000 [ 118.350289] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e1bd184b20 [ 118.351139] R13: 00007fff16dd25b0 R14: 00007fff16dd25e0 R15: 00007fff16dd2940 [ 118.352002] [ 118.352296] [ 118.352510] Allocated by task 211: [ 118.352961] kasan_save_stack+0x22/0x50 [ 118.353471] kasan_set_track+0x25/0x30 [ 118.353967] __kasan_slab_alloc+0x59/0x70 [ 118.354498] kmem_cache_alloc+0x16b/0x370 [ 118.355024] vm_area_dup+0x20/0x160 [ 118.355481] __split_vma+0x170/0x950 [ 118.355951] split_vma+0xc6/0x110 [ 118.356390] mprotect_fixup+0x8d2/0xb30 [ 118.356904] do_mprotect_pkey+0x87e/0xd40 [ 118.357430] __x64_sys_mprotect+0x78/0xc0 [ 118.357955] do_syscall_64+0x3f/0x90 [ 118.358437] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 118.359089] [ 118.359303] Freed by task 211: [ 118.359699] kasan_save_stack+0x22/0x50 [ 118.360221] kasan_set_track+0x25/0x30 [ 118.360719] kasan_save_free_info+0x2b/0x50 [ 118.361270] __kasan_slab_free+0x10a/0x190 [ 118.361802] kmem_cache_free+0x10d/0x4d0 [ 118.362310] rcu_core+0x8c8/0x2860 [ 118.362755] __do_softirq+0x1b7/0x7d4 [ 118.363245] [ 118.363463] Last potentially related work creation: [ 118.364060] kasan_save_stack+0x22/0x50 [ 118.364568] __kasan_record_aux_stack+0x8e/0xa0 [ 118.365166] __call_rcu_common.constprop.0+0x6a/0xb90 [ 118.365820] remove_vma+0x139/0x170 [ 118.366324] do_vmi_align_munmap+0xd4a/0x11f0 [ 118.366915] do_vmi_munmap+0x1f1/0x2b0 [ 118.367405] __vm_munmap+0x138/0x3a0 [ 118.367894] __x64_sys_munmap+0x59/0x80 [ 118.368397] do_syscall_64+0x3f/0x90 [ 118.368909] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 118.369565] [ 118.369781] Second to last potentially related work creation: [ 118.370477] kasan_save_stack+0x22/0x50 [ 118.370995] __kasan_record_aux_stack+0x8e/0xa0 [ 118.371575] __call_rcu_common.constprop.0+0x6a/0xb90 [ 118.372222] remove_vma+0x139/0x170 [ 118.372677] do_vmi_align_munmap+0xd4a/0x11f0 [ 118.373270] do_vmi_munmap+0x1f1/0x2b0 [ 118.373754] mmap_region+0x1f9/0x2660 [ 118.374237] do_mmap+0x854/0xf00 [ 118.374672] vm_mmap_pgoff+0x1a6/0x3a0 [ 118.375169] ksys_mmap_pgoff+0x3af/0x500 [ 118.375672] do_syscall_64+0x3f/0x90 [ 118.376149] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 118.376791] [ 118.377019] The buggy address belongs to the object at ffff88800ed110e8 [ 118.377019] which belongs to the cache vm_area_struct of size 168 [ 118.378486] The buggy address is located 88 bytes inside of [ 118.378486] freed 168-byte region [ffff88800ed110e8, ffff88800ed11190) [ 118.379898] [ 118.380118] The buggy address belongs to the physical page: [ 118.380779] page:000000009547d602 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed11 [ 118.381897] memcg:ffff88800eda1701 [ 118.382337] flags: 0x100000000000200(slab|node=0|zone=1) [ 118.382980] page_type: 0xffffffff() [ 118.383439] raw: 0100000000000200 ffff88800879fc80 ffffea00003b4980 dead000000000008 [ 118.384365] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800eda1701 [ 118.385279] page dumped because: kasan: bad access detected [ 118.385948] [ 118.386166] Memory state around the buggy address: [ 118.386741] ffff88800ed11000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 118.387602] ffff88800ed11080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 118.388458] >ffff88800ed11100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 118.389322] ^ [ 118.389964] ffff88800ed11180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 118.390813] ffff88800ed11200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 118.391657] ================================================================== [ 118.392576] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 120.888941] BUG: Bad rss-counter state mm:000000002e5f96b4 type:MM_FILEPAGES val:33 [ 120.890432] BUG: Bad rss-counter state mm:000000002e5f96b4 type:MM_ANONPAGES val:22 [ 121.416408] BUG: Bad rss-counter state mm:00000000e7c8b550 type:MM_FILEPAGES val:33 [ 121.417827] BUG: Bad rss-counter state mm:00000000e7c8b550 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:35472' (ECDSA) to the list of known hosts. 2023/06/20 02:50:04 fuzzer started 2023/06/20 02:50:05 dialing manager at localhost:44161 2023/06/20 02:50:05 checking machine... 2023/06/20 02:50:05 checking revisions... [ 122.052103] kmemleak: Automatic memory scanning thread ended 2023/06/20 02:50:05 testing simple program... [ 122.102290] cgroup: Unknown subsys name 'net' [ 122.162213] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:48:37 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=00007f06abd2d0f0 CR3=000000000dfa8000 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=2034303a30353a3230203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034303a30353a3230203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000005 RCX=ffffffff8449a0a1 RDX=ffff88800ecf1b40 RSI=0000000000000000 RDI=0000000000000005 RBP=ffff8880167e3650 RSP=ffff888018f06df8 R8 =0000000000000005 R9 =0000000000000003 R10=0000000000000003 R11=ffff88800fa6841c R12=0000000000000005 R13=ffff8880167e380c R14=dffffc0000000000 R15=ffff888018f06ea0 RIP=ffffffff814c07e0 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 00007fb074294900 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=00007fb07425e008 CR3=0000000009020000 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