[ 57.659430] BUG: Bad rss-counter state mm:000000003dc97370 type:MM_FILEPAGES val:33 [ 57.660471] BUG: Bad rss-counter state mm:000000003dc97370 type:MM_ANONPAGES val:22 [ 57.816626] ================================================================== [ 57.817739] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 57.818856] Read of size 8 at addr ffff88800e326c20 by task sshd/227 [ 57.819875] [ 57.820135] CPU: 1 PID: 227 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 57.821186] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 57.822341] Call Trace: [ 57.822754] [ 57.823096] dump_stack_lvl+0x91/0xf0 [ 57.823596] print_report+0xcc/0x620 [ 57.824084] ? __virt_addr_valid+0x102/0x340 [ 57.824642] ? vma_interval_tree_remove+0xc75/0xec0 [ 57.825294] ? vma_interval_tree_remove+0xc75/0xec0 [ 57.825906] kasan_report+0xbe/0xf0 [ 57.826384] ? vma_interval_tree_remove+0xc75/0xec0 [ 57.827016] vma_interval_tree_remove+0xc75/0xec0 [ 57.827626] vma_prepare+0xc54/0x11a0 [ 57.828112] __split_vma+0x5af/0x950 [ 57.828594] ? __pfx___split_vma+0x10/0x10 [ 57.829156] ? find_held_lock+0x2c/0x110 [ 57.829685] do_vmi_align_munmap+0x2ba/0x11f0 [ 57.830263] ? lock_is_held_type+0x9f/0x120 [ 57.830816] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 57.831422] ? mtree_range_walk+0x632/0x900 [ 57.831978] ? mas_walk+0x5c7/0x7c0 [ 57.832453] do_vmi_munmap+0x1f1/0x2b0 [ 57.832984] mmap_region+0x1f9/0x2660 [ 57.833471] ? vm_mmap_pgoff+0x15c/0x3a0 [ 57.833982] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 57.834722] ? __pfx_lock_acquire+0x10/0x10 [ 57.835256] ? __pfx_mmap_region+0x10/0x10 [ 57.835789] ? security_mmap_addr+0x7d/0xa0 [ 57.836332] ? get_unmapped_area+0x1f5/0x3f0 [ 57.836912] do_mmap+0x854/0xf00 [ 57.837355] vm_mmap_pgoff+0x1a6/0x3a0 [ 57.837849] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 57.838411] ksys_mmap_pgoff+0x3af/0x500 [ 57.838933] do_syscall_64+0x3f/0x90 [ 57.839407] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 57.840071] RIP: 0033:0x7f0313f16d82 [ 57.840544] 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 [ 57.842690] RSP: 002b:00007ffec4d939a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 57.843587] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0313f16d82 [ 57.844428] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0313350000 [ 57.845309] RBP: 00007f0313350000 R08: 0000000000000009 R09: 0000000000001000 [ 57.846144] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b892944f70 [ 57.847002] R13: 00007ffec4d939c0 R14: 00007ffec4d939f0 R15: 00007ffec4d93d50 [ 57.847858] [ 57.848149] [ 57.848362] Allocated by task 214: [ 57.848824] kasan_save_stack+0x22/0x50 [ 57.849332] kasan_set_track+0x25/0x30 [ 57.849828] __kasan_slab_alloc+0x59/0x70 [ 57.850349] kmem_cache_alloc+0x16b/0x370 [ 57.850875] vm_area_dup+0x20/0x160 [ 57.851331] __split_vma+0x170/0x950 [ 57.851797] split_vma+0xc6/0x110 [ 57.852231] mprotect_fixup+0x8d2/0xb30 [ 57.852761] do_mprotect_pkey+0x87e/0xd40 [ 57.853286] __x64_sys_mprotect+0x78/0xc0 [ 57.853803] do_syscall_64+0x3f/0x90 [ 57.854273] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 57.854933] [ 57.855148] Freed by task 214: [ 57.855552] kasan_save_stack+0x22/0x50 [ 57.856065] kasan_set_track+0x25/0x30 [ 57.856565] kasan_save_free_info+0x2b/0x50 [ 57.857118] __kasan_slab_free+0x10a/0x190 [ 57.857655] kmem_cache_free+0x10d/0x4d0 [ 57.858166] rcu_core+0x8c8/0x2860 [ 57.858610] __do_softirq+0x1b7/0x7d4 [ 57.859101] [ 57.859315] Last potentially related work creation: [ 57.859897] kasan_save_stack+0x22/0x50 [ 57.860399] __kasan_record_aux_stack+0x8e/0xa0 [ 57.861047] __call_rcu_common.constprop.0+0x6a/0xb90 [ 57.861691] remove_vma+0x139/0x170 [ 57.862141] do_vmi_align_munmap+0xd4a/0x11f0 [ 57.862735] do_vmi_munmap+0x1f1/0x2b0 [ 57.863217] __vm_munmap+0x138/0x3a0 [ 57.863680] __x64_sys_munmap+0x59/0x80 [ 57.864174] do_syscall_64+0x3f/0x90 [ 57.864646] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 57.865312] [ 57.865528] Second to last potentially related work creation: [ 57.866205] kasan_save_stack+0x22/0x50 [ 57.866715] __kasan_record_aux_stack+0x8e/0xa0 [ 57.867286] __call_rcu_common.constprop.0+0x6a/0xb90 [ 57.867926] remove_vma+0x139/0x170 [ 57.868374] do_vmi_align_munmap+0xd4a/0x11f0 [ 57.868961] do_vmi_munmap+0x1f1/0x2b0 [ 57.869448] mmap_region+0x1f9/0x2660 [ 57.869921] do_mmap+0x854/0xf00 [ 57.870346] vm_mmap_pgoff+0x1a6/0x3a0 [ 57.870840] ksys_mmap_pgoff+0x7d/0x500 [ 57.871332] do_syscall_64+0x3f/0x90 [ 57.871805] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 57.872445] [ 57.872666] The buggy address belongs to the object at ffff88800e326bc8 [ 57.872666] which belongs to the cache vm_area_struct of size 168 [ 57.874150] The buggy address is located 88 bytes inside of [ 57.874150] freed 168-byte region [ffff88800e326bc8, ffff88800e326c70) [ 57.875562] [ 57.875777] The buggy address belongs to the physical page: [ 57.876431] page:00000000f5b96964 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe326 [ 57.877533] memcg:ffff88800df09901 [ 57.877956] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 57.878650] page_type: 0xffffffff() [ 57.879124] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 57.880034] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800df09901 [ 57.880979] page dumped because: kasan: bad access detected [ 57.881642] [ 57.881860] Memory state around the buggy address: [ 57.882444] ffff88800e326b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.883325] ffff88800e326b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 57.884184] >ffff88800e326c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 57.885076] ^ [ 57.885601] ffff88800e326c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 57.886449] ffff88800e326d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 57.887320] ================================================================== [ 57.888218] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 60.691598] BUG: Bad rss-counter state mm:000000004a2146f2 type:MM_FILEPAGES val:33 [ 60.692904] BUG: Bad rss-counter state mm:000000004a2146f2 type:MM_ANONPAGES val:22 [ 61.161238] BUG: Bad rss-counter state mm:0000000036a03e8b type:MM_FILEPAGES val:33 [ 61.162371] BUG: Bad rss-counter state mm:0000000036a03e8b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:24778' (ECDSA) to the list of known hosts. 2023/06/19 13:39:16 fuzzer started 2023/06/19 13:39:16 dialing manager at localhost:44161 2023/06/19 13:39:16 checking machine... 2023/06/19 13:39:16 checking revisions... [ 61.874049] kmemleak: Automatic memory scanning thread ended 2023/06/19 13:39:16 testing simple program... [ 61.925458] cgroup: Unknown subsys name 'net' [ 61.977091] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:38:49 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffed1002b00f99 RCX=0000000000000003 RDX=ffff888015808000 RSI=ffffc9000063e048 RDI=ffff888015807d70 RBP=ffffc9000063e048 RSP=ffff888015807cc8 R8 =0000000000000004 R9 =000000007fff0000 R10=000000007fff0000 R11=0000000000000000 R12=ffff888015807e30 R13=dffffc0000000000 R14=ffff888015807e30 R15=ffffc9000063e000 RIP=ffffffff815ab14e 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 00007f3c969c6900 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=00007f6625404650 CR3=000000000c56a000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=d55288c8fdae462f00000000000ae988 XMM05=87cd7735038093b20000000000136068 XMM06=e8008b1642ea3e600000000000134ae8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 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=00007f6624cee000 CR3=0000000016cd6000 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=e3cb24f1d186224cb3b0eedca1220022 XMM02=4258a6f8f98dfbaed9d990f4f3c28866 XMM03=c7aedda8ac0b1ee2c64a64abcc08682e XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=0e0d0c0f0a09080b0605040702010003 XMM08=01000000000000000000000000000001 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000