[ 23.668094] BUG: Bad rss-counter state mm:00000000167d4737 type:MM_FILEPAGES val:33 [ 23.669496] BUG: Bad rss-counter state mm:00000000167d4737 type:MM_ANONPAGES val:22 [ 23.823947] ================================================================== [ 23.825011] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.826188] Read of size 8 at addr ffff88800dded4e0 by task sshd/219 [ 23.827178] [ 23.827412] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.828262] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.829247] Call Trace: [ 23.829562] [ 23.829844] dump_stack_lvl+0x91/0xf0 [ 23.830335] print_report+0xcc/0x620 [ 23.830824] ? __virt_addr_valid+0x102/0x340 [ 23.831372] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.831985] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.832606] kasan_report+0xbe/0xf0 [ 23.833101] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.833746] vma_interval_tree_remove+0xc75/0xec0 [ 23.834374] vma_prepare+0xc54/0x11a0 [ 23.834874] __split_vma+0x5af/0x950 [ 23.835362] ? __pfx___split_vma+0x10/0x10 [ 23.835917] ? find_held_lock+0x2c/0x110 [ 23.836471] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.837057] ? lock_is_held_type+0x9f/0x120 [ 23.837633] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.838269] ? mtree_range_walk+0x632/0x900 [ 23.838868] ? mas_walk+0x5c7/0x7c0 [ 23.839364] do_vmi_munmap+0x1f1/0x2b0 [ 23.839878] mmap_region+0x1f9/0x2660 [ 23.840375] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.840905] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.841655] ? __pfx_lock_acquire+0x10/0x10 [ 23.842218] ? __pfx_mmap_region+0x10/0x10 [ 23.842783] ? security_mmap_addr+0x7d/0xa0 [ 23.843339] ? get_unmapped_area+0x1f5/0x3f0 [ 23.843912] do_mmap+0x854/0xf00 [ 23.844367] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.844877] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.845472] ksys_mmap_pgoff+0x3af/0x500 [ 23.846007] do_syscall_64+0x3f/0x90 [ 23.846509] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.847207] RIP: 0033:0x7fd7d1066d82 [ 23.847677] 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 [ 23.849910] RSP: 002b:00007ffcf3b783b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.850875] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd7d1066d82 [ 23.851765] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd7d04a0000 [ 23.852655] RBP: 00007fd7d04a0000 R08: 0000000000000009 R09: 0000000000001000 [ 23.853539] R10: 0000000000000812 R11: 0000000000000206 R12: 000056525509fec0 [ 23.854420] R13: 00007ffcf3b783d0 R14: 00007ffcf3b78400 R15: 00007ffcf3b78760 [ 23.855336] [ 23.855643] [ 23.855868] Allocated by task 212: [ 23.856312] kasan_save_stack+0x22/0x50 [ 23.856835] kasan_set_track+0x25/0x30 [ 23.857360] __kasan_slab_alloc+0x59/0x70 [ 23.857904] kmem_cache_alloc+0x16b/0x370 [ 23.858439] vm_area_dup+0x20/0x160 [ 23.858930] __split_vma+0x170/0x950 [ 23.859421] split_vma+0xc6/0x110 [ 23.859875] mprotect_fixup+0x8d2/0xb30 [ 23.860404] do_mprotect_pkey+0x87e/0xd40 [ 23.860951] __x64_sys_mprotect+0x78/0xc0 [ 23.861500] do_syscall_64+0x3f/0x90 [ 23.861999] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.862689] [ 23.862915] Freed by task 210: [ 23.863324] kasan_save_stack+0x22/0x50 [ 23.863855] kasan_set_track+0x25/0x30 [ 23.864382] kasan_save_free_info+0x2b/0x50 [ 23.864923] __kasan_slab_free+0x10a/0x190 [ 23.865454] kmem_cache_free+0x10d/0x4d0 [ 23.865983] rcu_core+0x8c8/0x2860 [ 23.866430] __do_softirq+0x1b7/0x7d4 [ 23.866929] [ 23.867147] Last potentially related work creation: [ 23.867796] kasan_save_stack+0x22/0x50 [ 23.868294] __kasan_record_aux_stack+0x8e/0xa0 [ 23.868870] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.869515] remove_vma+0x139/0x170 [ 23.869968] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.870534] do_vmi_munmap+0x1f1/0x2b0 [ 23.871037] __vm_munmap+0x138/0x3a0 [ 23.871509] __x64_sys_munmap+0x59/0x80 [ 23.872006] do_syscall_64+0x3f/0x90 [ 23.872488] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.873138] [ 23.873352] Second to last potentially related work creation: [ 23.874034] kasan_save_stack+0x22/0x50 [ 23.874552] __kasan_record_aux_stack+0x8e/0xa0 [ 23.875123] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.875766] remove_vma+0x139/0x170 [ 23.876225] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.876782] do_vmi_munmap+0x1f1/0x2b0 [ 23.877267] mmap_region+0x1f9/0x2660 [ 23.877749] do_mmap+0x854/0xf00 [ 23.878179] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.878684] ksys_mmap_pgoff+0x3af/0x500 [ 23.879181] do_syscall_64+0x3f/0x90 [ 23.879653] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.880289] [ 23.880502] The buggy address belongs to the object at ffff88800dded488 [ 23.880502] which belongs to the cache vm_area_struct of size 168 [ 23.881968] The buggy address is located 88 bytes inside of [ 23.881968] freed 168-byte region [ffff88800dded488, ffff88800dded530) [ 23.883364] [ 23.883586] The buggy address belongs to the physical page: [ 23.884241] page:0000000074451e64 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdded [ 23.885344] memcg:ffff88800dc6b601 [ 23.885773] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.886424] page_type: 0xffffffff() [ 23.886887] raw: 0100000000000200 ffff8880087a0c80 ffffea0000376300 dead000000000004 [ 23.887808] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dc6b601 [ 23.888711] page dumped because: kasan: bad access detected [ 23.889378] [ 23.889595] Memory state around the buggy address: [ 23.890176] ffff88800dded380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 23.891050] ffff88800dded400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 23.891909] >ffff88800dded480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.892763] ^ [ 23.893523] ffff88800dded500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 23.894387] ffff88800dded580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.895259] ================================================================== [ 23.896318] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 25.570467] BUG: Bad rss-counter state mm:00000000ed31f968 type:MM_FILEPAGES val:33 [ 25.571192] BUG: Bad rss-counter state mm:00000000ed31f968 type:MM_ANONPAGES val:22 [ 25.999223] BUG: Bad rss-counter state mm:0000000099fe67ea type:MM_FILEPAGES val:33 [ 26.000308] BUG: Bad rss-counter state mm:0000000099fe67ea type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13698' (ECDSA) to the list of known hosts. 2023/06/20 22:56:04 fuzzer started 2023/06/20 22:56:04 dialing manager at localhost:36067 2023/06/20 22:56:04 checking machine... 2023/06/20 22:56:04 checking revisions... [ 26.713412] kmemleak: Automatic memory scanning thread ended 2023/06/20 22:56:04 testing simple program... [ 26.767621] cgroup: Unknown subsys name 'net' [ 26.812697] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:56:04 Registers: info registers vcpu 0 RAX=0000000000000008 RBX=0000000000000000 RCX=ffffffff812e0473 RDX=0000000000000000 RSI=0000000000000004 RDI=ffff888010260480 RBP=0000000000000000 RSP=ffff8880165a7e80 R8 =0000000000000000 R9 =ffffed100204c090 R10=ffff888010260483 R11=00000000000b6a61 R12=ffffffff854f8820 R13=ffff8880198b4500 R14=1ffff11002cb4fd1 R15=dffffc0000000000 RIP=ffffffff8363b5fa RFL=00000286 [--S--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 00007fe256bd1900 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=00007fe2571890b0 CR3=000000000e08c000 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=2033303a36353a3232203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033303a36353a3232203032 XMM08=3d656e696c646d632022656369767265 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=ffff888008c04400 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=00007f1e14223020 CR3=0000000009610000 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=c5a46dd0e84257968845432f6664c5fe XMM02=2c67c8bc2e329bc3000000000011d958 XMM03=fb795ef6d65770560000000000121600 XMM04=c9d32fa0a792884800000000000ae988 XMM05=dfcdbad4f1609c3700000000001324c8 XMM06=a20c540ba05aa5a800000000001316a0 XMM07=e042d86d42eb936e00000000001218d8 XMM08=23cbfb0efb9a9a1e000000000011d9b8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000