[ 74.174556] BUG: Bad rss-counter state mm:0000000046729dd3 type:MM_FILEPAGES val:33 [ 74.175772] BUG: Bad rss-counter state mm:0000000046729dd3 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 74.706461] ================================================================== [ 74.707417] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 74.708380] Read of size 8 at addr ffff88801a30d310 by task sshd/219 [ 74.709188] [ 74.709519] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 74.710457] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 74.711466] Call Trace: [ 74.711834] [ 74.712133] dump_stack_lvl+0x91/0xf0 [ 74.712646] print_report+0xcc/0x620 [ 74.713169] ? __virt_addr_valid+0x102/0x340 [ 74.713740] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.714380] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.715019] kasan_report+0xbe/0xf0 [ 74.715512] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.716150] vma_interval_tree_remove+0xc75/0xec0 [ 74.716771] vma_prepare+0xc54/0x11a0 [ 74.717282] __split_vma+0x5af/0x950 [ 74.717770] ? __pfx___split_vma+0x10/0x10 [ 74.718320] ? find_held_lock+0x2c/0x110 [ 74.718855] do_vmi_align_munmap+0x2ba/0x11f0 [ 74.719448] ? lock_is_held_type+0x9f/0x120 [ 74.720008] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 74.720636] ? mtree_range_walk+0x632/0x900 [ 74.721236] ? mas_walk+0x5c7/0x7c0 [ 74.721729] do_vmi_munmap+0x1f1/0x2b0 [ 74.722241] mmap_region+0x1f9/0x2660 [ 74.722739] ? vm_mmap_pgoff+0x15c/0x3a0 [ 74.723275] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 74.724036] ? __pfx_lock_acquire+0x10/0x10 [ 74.724594] ? __pfx_mmap_region+0x10/0x10 [ 74.725158] ? security_mmap_addr+0x7d/0xa0 [ 74.725713] ? get_unmapped_area+0x1f5/0x3f0 [ 74.726291] do_mmap+0x854/0xf00 [ 74.726745] vm_mmap_pgoff+0x1a6/0x3a0 [ 74.727360] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 74.728057] ksys_mmap_pgoff+0x3af/0x500 [ 74.728684] do_syscall_64+0x3f/0x90 [ 74.729298] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.730083] RIP: 0033:0x7fd1a0bb5d82 [ 74.730638] 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 [ 74.733309] RSP: 002b:00007fff390a5a58 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 74.734427] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd1a0bb5d82 [ 74.735486] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd19ffef000 [ 74.736535] RBP: 00007fd19ffef000 R08: 0000000000000009 R09: 0000000000001000 [ 74.737586] R10: 0000000000000812 R11: 0000000000000206 R12: 000055cf51d7eec0 [ 74.738623] R13: 00007fff390a5a70 R14: 00007fff390a5aa0 R15: 00007fff390a5e00 [ 74.739673] [ 74.740022] [ 74.740280] Allocated by task 207: [ 74.740802] kasan_save_stack+0x22/0x50 [ 74.741444] kasan_set_track+0x25/0x30 [ 74.742043] __kasan_slab_alloc+0x59/0x70 [ 74.742681] kmem_cache_alloc+0x16b/0x370 [ 74.743306] vm_area_dup+0x20/0x160 [ 74.743860] __split_vma+0x170/0x950 [ 74.744429] split_vma+0xc6/0x110 [ 74.744977] mprotect_fixup+0x8d2/0xb30 [ 74.745589] do_mprotect_pkey+0x87e/0xd40 [ 74.746216] __x64_sys_mprotect+0x78/0xc0 [ 74.746852] do_syscall_64+0x3f/0x90 [ 74.747420] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.748209] [ 74.748473] Freed by task 207: [ 74.748953] kasan_save_stack+0x22/0x50 [ 74.749561] kasan_set_track+0x25/0x30 [ 74.750159] kasan_save_free_info+0x2b/0x50 [ 74.750810] __kasan_slab_free+0x10a/0x190 [ 74.751512] kmem_cache_free+0x10d/0x4d0 [ 74.752132] rcu_core+0x8c8/0x2860 [ 74.752667] __do_softirq+0x1b7/0x7d4 [ 74.753257] [ 74.753516] Last potentially related work creation: [ 74.754239] kasan_save_stack+0x22/0x50 [ 74.754847] __kasan_record_aux_stack+0x8e/0xa0 [ 74.755546] __call_rcu_common.constprop.0+0x6a/0xb90 [ 74.756340] remove_vma+0x139/0x170 [ 74.756897] do_vmi_align_munmap+0xd4a/0x11f0 [ 74.757585] do_vmi_munmap+0x1f1/0x2b0 [ 74.758174] __vm_munmap+0x138/0x3a0 [ 74.758746] __x64_sys_munmap+0x59/0x80 [ 74.759357] do_syscall_64+0x3f/0x90 [ 74.759930] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.760714] [ 74.760974] The buggy address belongs to the object at ffff88801a30d2b8 [ 74.760974] which belongs to the cache vm_area_struct of size 168 [ 74.762360] The buggy address is located 88 bytes inside of [ 74.762360] freed 168-byte region [ffff88801a30d2b8, ffff88801a30d360) [ 74.763693] [ 74.763901] The buggy address belongs to the physical page: [ 74.764523] page:000000008afb0751 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a30d [ 74.765704] memcg:ffff88801a242301 [ 74.766212] flags: 0x100000000000200(slab|node=0|zone=1) [ 74.766979] page_type: 0xffffffff() [ 74.767513] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 74.768607] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a242301 [ 74.769714] page dumped because: kasan: bad access detected [ 74.770500] [ 74.770753] Memory state around the buggy address: [ 74.771443] ffff88801a30d200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 74.772451] ffff88801a30d280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 74.773465] >ffff88801a30d300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 74.774427] ^ [ 74.774944] ffff88801a30d380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 74.775903] ffff88801a30d400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 74.776843] ================================================================== [ 74.777907] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 76.494250] BUG: Bad rss-counter state mm:0000000005cbe4c0 type:MM_FILEPAGES val:32 [ 76.495242] BUG: Bad rss-counter state mm:0000000005cbe4c0 type:MM_ANONPAGES val:22 [ 76.914149] BUG: Bad rss-counter state mm:00000000f6066cd6 type:MM_FILEPAGES val:33 [ 76.915201] BUG: Bad rss-counter state mm:00000000f6066cd6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:8182' (ECDSA) to the list of known hosts. 2023/06/19 17:19:22 fuzzer started 2023/06/19 17:19:22 dialing manager at localhost:44161 2023/06/19 17:19:22 checking machine... 2023/06/19 17:19:22 checking revisions... [ 77.615244] kmemleak: Automatic memory scanning thread ended 2023/06/19 17:19:22 testing simple program... [ 77.674589] cgroup: Unknown subsys name 'net' [ 77.763214] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:19:01 Registers: info registers vcpu 0 RAX=0000000000000010 RBX=0000000000000031 RCX=0000000000000000 RDX=ffff8880147c8000 RSI=ffff88800fc07bc0 RDI=ffff888010210130 RBP=ffff888010210000 RSP=ffff88800fc07a70 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=00000000000b6996 R12=ffff88800bbcc0d8 R13=0000000000000002 R14=ffff88800fc07bc0 R15=dffffc0000000000 RIP=ffffffff81f3c004 RFL=00000293 [--S-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 00007fb2640c9900 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=00007ffe63e6a000 CR3=000000001ca7a000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007ff096926000 CR3=00000000098c8000 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=cb9b40b30ce866a35c4fe48d4180bb1a XMM02=2c67c8bc2e329bc3000000000011c548 XMM03=fb795ef6d6577056000000000011ff80 XMM04=0f38e75d58d3284000000000000ae988 XMM05=dfcdbad4f1609c370000000000133a28 XMM06=ad30d4531e3b472a0000000000132890 XMM07=e042d86d42eb936e0000000000122880 XMM08=91ffad648b905530000000000011c5a8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000