[ 39.537586] BUG: Bad rss-counter state mm:000000003f566d05 type:MM_FILEPAGES val:33 [ 39.538987] BUG: Bad rss-counter state mm:000000003f566d05 type:MM_ANONPAGES val:22 [ 39.683251] ================================================================== [ 39.684172] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 39.685123] Read of size 8 at addr ffff88800eee83f8 by task sshd/219 [ 39.685884] [ 39.686100] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 39.687090] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 39.688053] Call Trace: [ 39.688369] [ 39.688650] dump_stack_lvl+0x91/0xf0 [ 39.689164] print_report+0xcc/0x620 [ 39.689652] ? __virt_addr_valid+0x102/0x340 [ 39.690196] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.690804] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.691416] kasan_report+0xbe/0xf0 [ 39.691890] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.692500] vma_interval_tree_remove+0xc75/0xec0 [ 39.693106] vma_prepare+0xc54/0x11a0 [ 39.693581] __split_vma+0x5af/0x950 [ 39.694050] ? __pfx___split_vma+0x10/0x10 [ 39.694579] ? find_held_lock+0x2c/0x110 [ 39.695097] do_vmi_align_munmap+0x2ba/0x11f0 [ 39.695655] ? lock_is_held_type+0x9f/0x120 [ 39.696186] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 39.696788] ? mtree_range_walk+0x632/0x900 [ 39.697350] ? mas_walk+0x5c7/0x7c0 [ 39.697822] do_vmi_munmap+0x1f1/0x2b0 [ 39.698310] mmap_region+0x1f9/0x2660 [ 39.698790] ? vm_mmap_pgoff+0x15c/0x3a0 [ 39.699303] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 39.700014] ? __pfx_lock_acquire+0x10/0x10 [ 39.700547] ? __pfx_mmap_region+0x10/0x10 [ 39.701085] ? security_mmap_addr+0x7d/0xa0 [ 39.701633] ? get_unmapped_area+0x1f5/0x3f0 [ 39.702185] do_mmap+0x854/0xf00 [ 39.702625] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.703119] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 39.703679] ksys_mmap_pgoff+0x3af/0x500 [ 39.704193] do_syscall_64+0x3f/0x90 [ 39.704678] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.705350] RIP: 0033:0x7f10d42f4d82 [ 39.705806] 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 [ 39.707955] RSP: 002b:00007fff43a9ed68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 39.708858] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f10d42f4d82 [ 39.709715] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f10d372e000 [ 39.710562] RBP: 00007f10d372e000 R08: 0000000000000009 R09: 0000000000001000 [ 39.711394] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556c51e78ec0 [ 39.712241] R13: 00007fff43a9ed80 R14: 00007fff43a9edb0 R15: 00007fff43a9f110 [ 39.713104] [ 39.713396] [ 39.713609] Allocated by task 212: [ 39.714033] kasan_save_stack+0x22/0x50 [ 39.714531] kasan_set_track+0x25/0x30 [ 39.715024] __kasan_slab_alloc+0x59/0x70 [ 39.715544] kmem_cache_alloc+0x16b/0x370 [ 39.716053] vm_area_dup+0x20/0x160 [ 39.716506] __split_vma+0x170/0x950 [ 39.716973] split_vma+0xc6/0x110 [ 39.717414] mprotect_fixup+0x8d2/0xb30 [ 39.717916] do_mprotect_pkey+0x87e/0xd40 [ 39.718432] __x64_sys_mprotect+0x78/0xc0 [ 39.718951] do_syscall_64+0x3f/0x90 [ 39.719427] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.720067] [ 39.720279] Freed by task 212: [ 39.720667] kasan_save_stack+0x22/0x50 [ 39.721173] kasan_set_track+0x25/0x30 [ 39.721666] kasan_save_free_info+0x2b/0x50 [ 39.722197] __kasan_slab_free+0x10a/0x190 [ 39.722722] kmem_cache_free+0x10d/0x4d0 [ 39.723230] rcu_core+0x8c8/0x2860 [ 39.723678] __do_softirq+0x1b7/0x7d4 [ 39.724157] [ 39.724374] Last potentially related work creation: [ 39.724960] kasan_save_stack+0x22/0x50 [ 39.725504] __kasan_record_aux_stack+0x8e/0xa0 [ 39.726074] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.726715] remove_vma+0x139/0x170 [ 39.727160] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.727842] do_vmi_munmap+0x1f1/0x2b0 [ 39.728324] __vm_munmap+0x138/0x3a0 [ 39.728835] __x64_sys_munmap+0x59/0x80 [ 39.729338] do_syscall_64+0x3f/0x90 [ 39.729808] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.730439] [ 39.730652] Second to last potentially related work creation: [ 39.731325] kasan_save_stack+0x22/0x50 [ 39.731821] __kasan_record_aux_stack+0x8e/0xa0 [ 39.732416] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.733054] remove_vma+0x139/0x170 [ 39.733524] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.734077] do_vmi_munmap+0x1f1/0x2b0 [ 39.734562] mmap_region+0x1f9/0x2660 [ 39.735044] do_mmap+0x854/0xf00 [ 39.735473] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.735961] ksys_mmap_pgoff+0x3af/0x500 [ 39.736464] do_syscall_64+0x3f/0x90 [ 39.736945] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.737607] [ 39.737827] The buggy address belongs to the object at ffff88800eee83a0 [ 39.737827] which belongs to the cache vm_area_struct of size 168 [ 39.739305] The buggy address is located 88 bytes inside of [ 39.739305] freed 168-byte region [ffff88800eee83a0, ffff88800eee8448) [ 39.740732] [ 39.740947] The buggy address belongs to the physical page: [ 39.741615] page:00000000baff8456 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeee8 [ 39.742697] memcg:ffff88800e9cd601 [ 39.743122] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 39.743810] page_type: 0xffffffff() [ 39.744262] raw: 0100000000000200 ffff88800879fc80 ffffea000036af00 dead000000000005 [ 39.745201] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e9cd601 [ 39.746142] page dumped because: kasan: bad access detected [ 39.746806] [ 39.747026] Memory state around the buggy address: [ 39.747613] ffff88800eee8280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 39.748475] ffff88800eee8300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 39.749353] >ffff88800eee8380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 39.750209] ^ [ 39.751065] ffff88800eee8400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 39.751936] ffff88800eee8480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 39.752824] ================================================================== [ 39.753914] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 41.623205] BUG: Bad rss-counter state mm:000000000bf8b2da type:MM_FILEPAGES val:33 [ 41.624347] BUG: Bad rss-counter state mm:000000000bf8b2da type:MM_ANONPAGES val:22 [ 42.023445] BUG: Bad rss-counter state mm:000000008499cab8 type:MM_FILEPAGES val:33 [ 42.025547] BUG: Bad rss-counter state mm:000000008499cab8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64396' (ECDSA) to the list of known hosts. 2023/06/19 18:57:58 fuzzer started 2023/06/19 18:57:59 dialing manager at localhost:44161 2023/06/19 18:57:59 checking machine... 2023/06/19 18:57:59 checking revisions... [ 42.773472] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:57:59 testing simple program... [ 42.826734] cgroup: Unknown subsys name 'net' [ 42.887637] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:57:50 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=0000000000000001 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=00007ffc5d70cf88 CR3=0000000005482000 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=00007f9567a32510000055cc16067790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff818a2be5 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff88800f2cf901 RSI=ffff88800f2cf9d8 RDI=ffff88800f2cf9d8 RBP=ffff88806cf09aa8 RSP=ffff88806cf099d8 R8 =ffffffff8614643a R9 =ffff88806cf09a90 R10=0000000000038001 R11=0000000000023567 R12=ffff88806cf09ab0 R13=ffff88806cf09a98 R14=ffff88800f2cf9e0 R15=ffff88806cf09a50 RIP=ffffffff8112fbf3 RFL=00000202 [-------] 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 00007f4504e67900 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=00007efdc4117650 CR3=000000001003e000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=7bd1e44764a868ec00000000000ae988 XMM05=28c2c0dc0aca78a600000000001366b0 XMM06=806171799158d9670000000000135130 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000