[ 30.443313] BUG: Bad rss-counter state mm:0000000097063aa7 type:MM_FILEPAGES val:33 [ 30.443843] BUG: Bad rss-counter state mm:0000000097063aa7 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 30.868275] ================================================================== [ 30.869361] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.870531] Read of size 8 at addr ffff88801a74bed8 by task sshd/221 [ 30.871410] [ 30.871616] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.872463] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.873404] Call Trace: [ 30.873710] [ 30.873981] dump_stack_lvl+0x91/0xf0 [ 30.874483] print_report+0xcc/0x620 [ 30.874954] ? __virt_addr_valid+0x102/0x340 [ 30.875484] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.876072] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.876676] kasan_report+0xbe/0xf0 [ 30.877144] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.877732] vma_interval_tree_remove+0xc75/0xec0 [ 30.878312] vma_prepare+0xc54/0x11a0 [ 30.878813] __split_vma+0x5af/0x950 [ 30.879270] ? __pfx___split_vma+0x10/0x10 [ 30.879788] ? find_held_lock+0x2c/0x110 [ 30.880298] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.880836] ? lock_is_held_type+0x9f/0x120 [ 30.881351] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.881926] ? mtree_range_walk+0x632/0x900 [ 30.882494] ? mas_walk+0x5c7/0x7c0 [ 30.882947] do_vmi_munmap+0x1f1/0x2b0 [ 30.883422] mmap_region+0x1f9/0x2660 [ 30.883884] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.884370] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.885056] ? __pfx_lock_acquire+0x10/0x10 [ 30.885569] ? __pfx_mmap_region+0x10/0x10 [ 30.886079] ? security_mmap_addr+0x7d/0xa0 [ 30.886610] ? get_unmapped_area+0x1f5/0x3f0 [ 30.887130] do_mmap+0x854/0xf00 [ 30.887552] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.888024] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.888565] ksys_mmap_pgoff+0x3af/0x500 [ 30.889053] do_syscall_64+0x3f/0x90 [ 30.889522] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.890141] RIP: 0033:0x7fe4826a2d82 [ 30.890618] 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 [ 30.892684] RSP: 002b:00007fff0ad4d798 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.893560] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe4826a2d82 [ 30.894386] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe481adc000 [ 30.895223] RBP: 00007fe481adc000 R08: 0000000000000009 R09: 0000000000001000 [ 30.896030] R10: 0000000000000812 R11: 0000000000000206 R12: 00005583d0e6aec0 [ 30.896852] R13: 00007fff0ad4d7b0 R14: 00007fff0ad4d7e0 R15: 00007fff0ad4db40 [ 30.897676] [ 30.897959] [ 30.898162] Allocated by task 208: [ 30.898606] kasan_save_stack+0x22/0x50 [ 30.899088] kasan_set_track+0x25/0x30 [ 30.899557] __kasan_slab_alloc+0x59/0x70 [ 30.900060] kmem_cache_alloc+0x16b/0x370 [ 30.900553] vm_area_dup+0x20/0x160 [ 30.900990] __split_vma+0x170/0x950 [ 30.901438] split_vma+0xc6/0x110 [ 30.901860] mprotect_fixup+0x8d2/0xb30 [ 30.902344] do_mprotect_pkey+0x87e/0xd40 [ 30.902881] __x64_sys_mprotect+0x78/0xc0 [ 30.903383] do_syscall_64+0x3f/0x90 [ 30.903841] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.904455] [ 30.904656] Freed by task 19: [ 30.905021] kasan_save_stack+0x22/0x50 [ 30.905498] kasan_set_track+0x25/0x30 [ 30.905962] kasan_save_free_info+0x2b/0x50 [ 30.906512] __kasan_slab_free+0x10a/0x190 [ 30.907017] kmem_cache_free+0x10d/0x4d0 [ 30.907508] rcu_core+0x8c8/0x2860 [ 30.907937] __do_softirq+0x1b7/0x7d4 [ 30.908401] [ 30.908603] Last potentially related work creation: [ 30.909165] kasan_save_stack+0x22/0x50 [ 30.909640] __kasan_record_aux_stack+0x8e/0xa0 [ 30.910182] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.910834] remove_vma+0x139/0x170 [ 30.911262] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.911789] do_vmi_munmap+0x1f1/0x2b0 [ 30.912251] __vm_munmap+0x138/0x3a0 [ 30.912691] __x64_sys_munmap+0x59/0x80 [ 30.913155] do_syscall_64+0x3f/0x90 [ 30.913605] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.914219] [ 30.914453] The buggy address belongs to the object at ffff88801a74be80 [ 30.914453] which belongs to the cache vm_area_struct of size 168 [ 30.915846] The buggy address is located 88 bytes inside of [ 30.915846] freed 168-byte region [ffff88801a74be80, ffff88801a74bf28) [ 30.917177] [ 30.917382] The buggy address belongs to the physical page: [ 30.918004] page:00000000ae8ad2b2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a74b [ 30.919073] memcg:ffff88801a723901 [ 30.919483] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.920095] page_type: 0xffffffff() [ 30.920517] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.921397] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a723901 [ 30.922266] page dumped because: kasan: bad access detected [ 30.922934] [ 30.923137] Memory state around the buggy address: [ 30.923820] ffff88801a74bd80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.924641] ffff88801a74be00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 30.925447] >ffff88801a74be80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.926258] ^ [ 30.926973] ffff88801a74bf00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 30.927788] ffff88801a74bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.928593] ================================================================== [ 30.929514] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.374340] BUG: Bad rss-counter state mm:0000000009163dd6 type:MM_FILEPAGES val:33 [ 33.375387] BUG: Bad rss-counter state mm:0000000009163dd6 type:MM_ANONPAGES val:22 [ 33.924841] BUG: Bad rss-counter state mm:00000000a4758513 type:MM_FILEPAGES val:33 [ 33.926009] BUG: Bad rss-counter state mm:00000000a4758513 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:32840' (ECDSA) to the list of known hosts. [ 33.965460] general protection fault, probably for non-canonical address 0xe01ffd6000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 33.966869] KASAN: maybe wild-memory-access in range [0x01000b0000000008-0x01000b000000000f] [ 33.967882] CPU: 0 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230620 #1 [ 33.968895] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.969870] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 33.970536] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 33.972663] RSP: 0018:ffff88800f1678a8 EFLAGS: 00010212 [ 33.973315] RAX: ffff88801ac24b28 RBX: ffff8880099ffa38 RCX: 1ffff1100133ff47 [ 33.974174] RDX: 0020016000000001 RSI: ffff88801ac24b28 RDI: ffff8880099ffa38 [ 33.975043] RBP: ffff88800f3e5a38 R08: 01000b0000000008 R09: 0000000000000000 [ 33.975900] R10: 0000000000000000 R11: 00000000000b6a61 R12: 01000b0000000000 [ 33.976756] R13: dffffc0000000000 R14: ffff88800f167988 R15: ffffffff816e6340 [ 33.977616] FS: 00007f35249ab900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 33.978602] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.979309] CR2: 00007f352495c000 CR3: 000000001a5ec000 CR4: 0000000000350ef0 [ 33.980163] Call Trace: [ 33.980482] [ 33.980764] ? die_addr+0x3c/0xa0 [ 33.981209] ? exc_general_protection+0x125/0x220 [ 33.981821] ? asm_exc_general_protection+0x26/0x30 [ 33.982456] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 33.983191] ? __rb_insert_augmented+0x78/0x8b0 [ 33.983775] ? vma_interval_tree_insert+0x23a/0x400 [ 33.984389] vma_prepare+0xa1a/0x11a0 [ 33.984877] __split_vma+0x5af/0x950 [ 33.985353] ? __pfx___split_vma+0x10/0x10 [ 33.985888] ? lock_acquire+0x434/0x4c0 [ 33.986394] do_vmi_align_munmap+0x361/0x11f0 [ 33.986984] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.987591] ? mtree_range_walk+0x632/0x900 [ 33.988147] ? mas_walk+0x5c7/0x7c0 [ 33.988625] do_vmi_munmap+0x1f1/0x2b0 [ 33.989120] mmap_region+0x1f9/0x2660 [ 33.989609] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.990329] ? __pfx_lock_acquire+0x10/0x10 [ 33.990881] ? __pfx_mmap_region+0x10/0x10 [ 33.991413] ? security_mmap_addr+0x7d/0xa0 [ 33.991941] ? get_unmapped_area+0x1f5/0x3f0 [ 33.992492] do_mmap+0x854/0xf00 [ 33.992928] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.993421] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.993979] ksys_mmap_pgoff+0x3af/0x500 [ 33.994499] do_syscall_64+0x3f/0x90 [ 33.994990] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.995659] RIP: 0033:0x7f352553dd82 [ 33.996130] 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 [ 33.998348] RSP: 002b:00007ffc5e289a38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.999314] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f352553dd82 [ 34.000189] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3524957000 [ 34.001059] RBP: 00007f3524957000 R08: 0000000000000008 R09: 0000000000001000 [ 34.001924] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564c2ced9630 [ 34.002804] R13: 00007ffc5e289a50 R14: 00007ffc5e289a80 R15: 00007ffc5e289de0 [ 34.003674] [ 34.003959] Modules linked in: [ 34.004666] ---[ end trace 0000000000000000 ]--- [ 34.005546] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 34.006743] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 34.009605] RSP: 0018:ffff88800f1678a8 EFLAGS: 00010212 [ 34.010656] RAX: ffff88801ac24b28 RBX: ffff8880099ffa38 RCX: 1ffff1100133ff47 [ 34.012070] RDX: 0020016000000001 RSI: ffff88801ac24b28 RDI: ffff8880099ffa38 [ 34.013145] RBP: ffff88800f3e5a38 R08: 01000b0000000008 R09: 0000000000000000 [ 34.014237] R10: 0000000000000000 R11: 00000000000b6a61 R12: 01000b0000000000 [ 34.015276] R13: dffffc0000000000 R14: ffff88800f167988 R15: ffffffff816e6340 [ 34.016147] FS: 00007f35249ab900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 34.017133] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.017836] CR2: 00007f352495c000 CR3: 000000001a5ec000 CR4: 0000000000350ef0 VM DIAGNOSIS: 20:57:20 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=00000000001121a0 RCX=00007fd77e6f2344 RDX=00007ffcb1c74908 RSI=00007ffcb1c74908 RDI=000055a09f730330 RBP=00007ffcb1c74988 RSP=00007ffcb1c74900 R8 =0000000000000058 R9 =00000000001121a0 R10=0000000000000002 R11=00007fd77d08cf00 R12=00007fd77d06c1a0 R13=000055a09f72f290 R14=0000000000000006 R15=00007ffcb1c74910 RIP=00007fd77e6f2475 RFL=00000202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fd77db6f900 00000000 00000000 GS =0000 0000000000000000 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=00007fd77d08d000 CR3=000000000d786000 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=7e8a42789393c4b7000000000011ab40 XMM01=be3275ea42d0a3bb7441355f3f43047d XMM02=2c67c8bc2e329bc3000000000011ae18 XMM03=fb795ef6d65770560000000000120b30 XMM04=843f03d3eaaed68b00000000000ae988 XMM05=dfcdbad4f1609c370000000000131698 XMM06=996f12021105480b0000000000130870 XMM07=e042d86d42eb936e0000000000121238 XMM08=4e69e246c6500a14000000000011ae78 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000001 RBX=ffff888008f7a000 RCX=0000000000000000 RDX=1ffffffff09a5da9 RSI=ffffffff818df1ce RDI=ffffffff84d2ed48 RBP=ffff888019a65140 RSP=ffff888013167ca0 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=0000000000000001 R13=0000000000000000 R14=ffff888019a651c8 R15=ffff888019a65218 RIP=ffffffff814c086b 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 00007f075bde5900 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=00007ffe2bb24000 CR3=000000000eb72000 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=563412feff00545000000000000080fe XMM01=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000