[ 30.742781] BUG: Bad rss-counter state mm:00000000fea699e3 type:MM_FILEPAGES val:33 [ 30.743617] BUG: Bad rss-counter state mm:00000000fea699e3 type:MM_ANONPAGES val:22 [ 30.906252] ================================================================== [ 30.907025] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.907810] Read of size 8 at addr ffff88801587c058 by task sshd/229 [ 30.908565] [ 30.908745] CPU: 0 PID: 229 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.909463] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.910276] Call Trace: [ 30.910564] [ 30.910802] dump_stack_lvl+0x91/0xf0 [ 30.911217] print_report+0xcc/0x620 [ 30.911614] ? __virt_addr_valid+0x102/0x340 [ 30.912068] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.912578] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.913087] kasan_report+0xbe/0xf0 [ 30.913482] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.913997] vma_interval_tree_remove+0xc75/0xec0 [ 30.914504] vma_prepare+0xc54/0x11a0 [ 30.914907] __split_vma+0x5af/0x950 [ 30.915307] ? __pfx___split_vma+0x10/0x10 [ 30.915773] ? find_held_lock+0x2c/0x110 [ 30.916229] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.916717] ? lock_is_held_type+0x9f/0x120 [ 30.917177] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.917679] ? mtree_range_walk+0x632/0x900 [ 30.918142] ? mas_walk+0x5c7/0x7c0 [ 30.918563] do_vmi_munmap+0x1f1/0x2b0 [ 30.918981] mmap_region+0x1f9/0x2660 [ 30.919383] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.919809] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.920403] ? __pfx_lock_acquire+0x10/0x10 [ 30.920870] ? __pfx_mmap_region+0x10/0x10 [ 30.921321] ? security_mmap_addr+0x7d/0xa0 [ 30.921763] ? get_unmapped_area+0x1f5/0x3f0 [ 30.922229] do_mmap+0x854/0xf00 [ 30.922606] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.923028] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.923509] ksys_mmap_pgoff+0x3af/0x500 [ 30.923927] do_syscall_64+0x3f/0x90 [ 30.924340] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.924899] RIP: 0033:0x7f8c03e8dd82 [ 30.925289] 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 [ 30.927145] RSP: 002b:00007ffd33251a98 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.927887] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8c03e8dd82 [ 30.928619] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8c032c7000 [ 30.929345] RBP: 00007f8c032c7000 R08: 0000000000000009 R09: 0000000000001000 [ 30.930079] R10: 0000000000000812 R11: 0000000000000206 R12: 00005633d5d0fec0 [ 30.930809] R13: 00007ffd33251ab0 R14: 00007ffd33251ae0 R15: 00007ffd33251e40 [ 30.931548] [ 30.931794] [ 30.931969] Allocated by task 219: [ 30.932322] kasan_save_stack+0x22/0x50 [ 30.932740] kasan_set_track+0x25/0x30 [ 30.933146] __kasan_slab_alloc+0x59/0x70 [ 30.933596] kmem_cache_alloc+0x16b/0x370 [ 30.934042] vm_area_dup+0x20/0x160 [ 30.934442] __split_vma+0x170/0x950 [ 30.934827] split_vma+0xc6/0x110 [ 30.935186] mprotect_fixup+0x8d2/0xb30 [ 30.935601] do_mprotect_pkey+0x87e/0xd40 [ 30.936032] __x64_sys_mprotect+0x78/0xc0 [ 30.936462] do_syscall_64+0x3f/0x90 [ 30.936849] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.937376] [ 30.937552] Freed by task 205: [ 30.937877] kasan_save_stack+0x22/0x50 [ 30.938293] kasan_set_track+0x25/0x30 [ 30.938721] kasan_save_free_info+0x2b/0x50 [ 30.939192] __kasan_slab_free+0x10a/0x190 [ 30.939656] kmem_cache_free+0x10d/0x4d0 [ 30.940097] rcu_core+0x8c8/0x2860 [ 30.940484] __do_softirq+0x1b7/0x7d4 [ 30.940897] [ 30.941081] Last potentially related work creation: [ 30.941588] kasan_save_stack+0x22/0x50 [ 30.942022] __kasan_record_aux_stack+0x8e/0xa0 [ 30.942533] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.943089] remove_vma+0x139/0x170 [ 30.943466] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.943943] do_vmi_munmap+0x1f1/0x2b0 [ 30.944357] __vm_munmap+0x138/0x3a0 [ 30.944763] __x64_sys_munmap+0x59/0x80 [ 30.945189] do_syscall_64+0x3f/0x90 [ 30.945592] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.946137] [ 30.946326] The buggy address belongs to the object at ffff88801587c000 [ 30.946326] which belongs to the cache vm_area_struct of size 168 [ 30.947608] The buggy address is located 88 bytes inside of [ 30.947608] freed 168-byte region [ffff88801587c000, ffff88801587c0a8) [ 30.948826] [ 30.949019] The buggy address belongs to the physical page: [ 30.949593] page:0000000029303789 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1587c [ 30.950570] memcg:ffff888016e30f01 [ 30.950933] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.951462] page_type: 0xffffffff() [ 30.951833] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.952586] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016e30f01 [ 30.953331] page dumped because: kasan: bad access detected [ 30.953876] [ 30.954054] Memory state around the buggy address: [ 30.954548] ffff88801587bf00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 30.955252] ffff88801587bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.955955] >ffff88801587c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.956664] ^ [ 30.957263] ffff88801587c080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.957971] ffff88801587c100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.958712] ================================================================== [ 30.959555] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.304560] BUG: Bad rss-counter state mm:00000000d5a02253 type:MM_FILEPAGES val:33 [ 33.305819] BUG: Bad rss-counter state mm:00000000d5a02253 type:MM_ANONPAGES val:22 [ 33.791324] BUG: Bad rss-counter state mm:00000000cfc0b851 type:MM_FILEPAGES val:33 [ 33.794049] BUG: Bad rss-counter state mm:00000000cfc0b851 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:62290' (ECDSA) to the list of known hosts. 2023/06/20 21:06:19 fuzzer started 2023/06/20 21:06:20 dialing manager at localhost:36067 2023/06/20 21:06:20 checking machine... 2023/06/20 21:06:20 checking revisions... [ 34.608821] kmemleak: Automatic memory scanning thread ended 2023/06/20 21:06:20 testing simple program... [ 34.662030] cgroup: Unknown subsys name 'net' [ 34.724608] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 21:06:19 Registers: info registers vcpu 0 RAX=1ffffffff0bcbc23 RBX=ffffffff85e5e11c RCX=ffffffff81ef10bd RDX=0000000000000000 RSI=ffffffff861c8ff4 RDI=ffffffff85e5e10c RBP=ffffffff85e5e10c RSP=ffff888018fc7930 R8 =ffffffff861c8ff4 R9 =ffff888018fc7a28 R10=0000000000038001 R11=0000000000038dd2 R12=ffffffff85e5e130 R13=ffffffff85e5e10c R14=ffffffff85e5e10c R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000213 [----A-C] 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 00007f53531a8900 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=00007f535375f618 CR3=000000001c982000 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=563412feff00545000000000000080fe XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 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=00007f4a5ca67960 CR3=000000000dab4000 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=2039313a36303a3132203032206e754a XMM01=73732878696e755f6d6170203a5d3833 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3833325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039313a36303a3132203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000