[ 25.817514] BUG: Bad rss-counter state mm:0000000087a873d9 type:MM_FILEPAGES val:33 [ 25.819415] BUG: Bad rss-counter state mm:0000000087a873d9 type:MM_ANONPAGES val:22 [ 25.980037] ================================================================== [ 25.981147] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 25.982288] Read of size 8 at addr ffff88800df0d3f8 by task sshd/219 [ 25.983408] [ 25.983668] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 25.984716] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 25.985973] Call Trace: [ 25.986443] [ 25.986829] dump_stack_lvl+0x91/0xf0 [ 25.987490] print_report+0xcc/0x620 [ 25.988140] ? __virt_addr_valid+0x102/0x340 [ 25.988900] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.989746] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.990597] kasan_report+0xbe/0xf0 [ 25.991240] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.992089] vma_interval_tree_remove+0xc75/0xec0 [ 25.992909] vma_prepare+0xc54/0x11a0 [ 25.993560] __split_vma+0x5af/0x950 [ 25.994207] ? __pfx___split_vma+0x10/0x10 [ 25.994962] ? find_held_lock+0x2c/0x110 [ 25.995667] do_vmi_align_munmap+0x2ba/0x11f0 [ 25.996432] ? lock_is_held_type+0x9f/0x120 [ 25.997114] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 25.997774] ? mtree_range_walk+0x632/0x900 [ 25.998387] ? mas_walk+0x5c7/0x7c0 [ 25.998894] do_vmi_munmap+0x1f1/0x2b0 [ 25.999415] mmap_region+0x1f9/0x2660 [ 25.999927] ? vm_mmap_pgoff+0x15c/0x3a0 [ 26.000470] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.001224] ? __pfx_lock_acquire+0x10/0x10 [ 26.001801] ? __pfx_mmap_region+0x10/0x10 [ 26.002369] ? security_mmap_addr+0x7d/0xa0 [ 26.002931] ? get_unmapped_area+0x1f5/0x3f0 [ 26.003516] do_mmap+0x854/0xf00 [ 26.003986] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.004515] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.005111] ksys_mmap_pgoff+0x3af/0x500 [ 26.005653] do_syscall_64+0x3f/0x90 [ 26.006173] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.006919] RIP: 0033:0x7fb641680d82 [ 26.007431] 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 [ 26.009821] RSP: 002b:00007ffe7d343cb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.010850] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb641680d82 [ 26.011805] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb640aba000 [ 26.012760] RBP: 00007fb640aba000 R08: 0000000000000009 R09: 0000000000001000 [ 26.013708] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c09f295ec0 [ 26.014664] R13: 00007ffe7d343cd0 R14: 00007ffe7d343d00 R15: 00007ffe7d344060 [ 26.015638] [ 26.015971] [ 26.016209] Allocated by task 212: [ 26.016690] kasan_save_stack+0x22/0x50 [ 26.017251] kasan_set_track+0x25/0x30 [ 26.017802] __kasan_slab_alloc+0x59/0x70 [ 26.018400] kmem_cache_alloc+0x16b/0x370 [ 26.018975] vm_area_dup+0x20/0x160 [ 26.019473] __split_vma+0x170/0x950 [ 26.019996] split_vma+0xc6/0x110 [ 26.020473] mprotect_fixup+0x8d2/0xb30 [ 26.021033] do_mprotect_pkey+0x87e/0xd40 [ 26.021612] __x64_sys_mprotect+0x78/0xc0 [ 26.022200] do_syscall_64+0x3f/0x90 [ 26.022739] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.023452] [ 26.023694] Freed by task 212: [ 26.024190] kasan_save_stack+0x22/0x50 [ 26.024756] kasan_set_track+0x25/0x30 [ 26.025306] kasan_save_free_info+0x2b/0x50 [ 26.025905] __kasan_slab_free+0x10a/0x190 [ 26.026522] kmem_cache_free+0x10d/0x4d0 [ 26.027097] rcu_core+0x8c8/0x2860 [ 26.027598] __do_softirq+0x1b7/0x7d4 [ 26.028123] [ 26.028362] Last potentially related work creation: [ 26.029015] kasan_save_stack+0x22/0x50 [ 26.029588] __kasan_record_aux_stack+0x8e/0xa0 [ 26.030310] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.031128] remove_vma+0x139/0x170 [ 26.031635] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.032251] do_vmi_munmap+0x1f1/0x2b0 [ 26.032800] __vm_munmap+0x138/0x3a0 [ 26.033313] __x64_sys_munmap+0x59/0x80 [ 26.033861] do_syscall_64+0x3f/0x90 [ 26.034396] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.035104] [ 26.035341] Second to last potentially related work creation: [ 26.036115] kasan_save_stack+0x22/0x50 [ 26.036685] __kasan_record_aux_stack+0x8e/0xa0 [ 26.037319] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.038032] remove_vma+0x139/0x170 [ 26.038545] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.039169] do_vmi_munmap+0x1f1/0x2b0 [ 26.039722] mmap_region+0x1f9/0x2660 [ 26.040244] do_mmap+0x854/0xf00 [ 26.040729] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.041271] ksys_mmap_pgoff+0x3af/0x500 [ 26.041826] do_syscall_64+0x3f/0x90 [ 26.042383] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.043096] [ 26.043342] The buggy address belongs to the object at ffff88800df0d3a0 [ 26.043342] which belongs to the cache vm_area_struct of size 168 [ 26.044979] The buggy address is located 88 bytes inside of [ 26.044979] freed 168-byte region [ffff88800df0d3a0, ffff88800df0d448) [ 26.046579] [ 26.046818] The buggy address belongs to the physical page: [ 26.047561] page:0000000040c54964 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdf0d [ 26.048766] memcg:ffff88800966ce01 [ 26.049247] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 26.050035] page_type: 0xffffffff() [ 26.050554] raw: 0100000000000200 ffff88800879fc80 ffffea00003a76c0 dead00000000000b [ 26.051568] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800966ce01 [ 26.052580] page dumped because: kasan: bad access detected [ 26.053313] [ 26.053553] Memory state around the buggy address: [ 26.054195] ffff88800df0d280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 26.055151] ffff88800df0d300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 26.056102] >ffff88800df0d380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 26.057048] ^ [ 26.057984] ffff88800df0d400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 26.058955] ffff88800df0d480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.059909] ================================================================== [ 26.061026] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 28.311487] BUG: Bad rss-counter state mm:000000000f12c8d0 type:MM_FILEPAGES val:33 [ 28.312466] BUG: Bad rss-counter state mm:000000000f12c8d0 type:MM_ANONPAGES val:22 [ 28.787139] BUG: Bad rss-counter state mm:00000000e2baefbf type:MM_FILEPAGES val:33 [ 28.788311] BUG: Bad rss-counter state mm:00000000e2baefbf type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:28888' (ECDSA) to the list of known hosts. 2023/06/19 22:09:30 fuzzer started 2023/06/19 22:09:31 dialing manager at localhost:44161 2023/06/19 22:09:31 checking machine... 2023/06/19 22:09:31 checking revisions... [ 29.408576] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:09:31 testing simple program... [ 29.457372] cgroup: Unknown subsys name 'net' [ 29.548002] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:09:28 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=00000000800d000d RDX=00000000800d000c RSI=ffffffff81806c6b RDI=0000000000000000 RBP=ffff888017f97bf0 RSP=ffff888017f97b30 R8 =00000000800d000d R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=ffffffff81806df1 R12=ffff88800844f780 R13=ffff88800d876720 R14=ffffea0000361d80 R15=ffff88806ce3de00 RIP=ffffffff818072a6 RFL=00000082 [--S----] 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 00007f0837f7d900 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=00007f08385350b0 CR3=000000000e650000 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=2030333a39303a3232203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732030333a39303a3232203931 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=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=00007f1e9e911140 CR3=000000000989e000 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=be36ebca4b92549a0c4895e61bd0a3b3 XMM02=2c67c8bc2e329bc3000000000011e800 XMM03=fb795ef6d65770560000000000124ae8 XMM04=89f95fee209b69eb00000000000ae988 XMM05=dfcdbad4f1609c370000000000135958 XMM06=8da818f0f90522ec0000000000134860 XMM07=e042d86d42eb936e0000000000124dc0 XMM08=2f1e3b90fdd40c7b000000000011e860 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000