DUID 00:04:83:15:3d:b3:f9:44:11:d6:e6:e1:d9:1f:49:4d:f4:66 forked to background, child pid 3181 [ 26.008569][ T3182] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.012823][ T3182] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 76.167426][ T6] cfg80211: failed to load regulatory.db [ 76.191295][ T4110] ================================================================== [ 76.191306][ T4110] BUG: KASAN: use-after-free in __lock_acquire+0x3ab9/0x5660 [ 76.191354][ T4110] Read of size 8 at addr ffff88807b7a93b8 by task syz-executor404/4110 [ 76.191374][ T4110] executing program executing program executing program [ 76.191379][ T4110] CPU: 0 PID: 4110 Comm: syz-executor404 Not tainted 5.18.0-syzkaller-11972-gd1dc87763f40 #0 [ 76.191406][ T4110] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.191420][ T4110] Call Trace: [ 76.191426][ T4110] [ 76.191434][ T4110] dump_stack_lvl+0xcd/0x134 [ 76.191468][ T4110] print_address_description.constprop.0.cold+0xeb/0x495 [ 76.191499][ T4110] ? __lock_acquire+0x3ab9/0x5660 [ 76.191528][ T4110] kasan_report.cold+0xf4/0x1c6 [ 76.191553][ T4110] ? __lock_acquire+0x3ab9/0x5660 executing program executing program executing program [ 76.191582][ T4110] __lock_acquire+0x3ab9/0x5660 [ 76.191615][ T4110] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.191646][ T4110] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.191673][ T4110] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 76.191705][ T4110] lock_acquire+0x1ab/0x570 [ 76.191733][ T4110] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 76.191764][ T4110] ? lock_release+0x780/0x780 [ 76.191791][ T4110] ? lock_release+0x780/0x780 [ 76.191819][ T4110] ? io_poll_check_events+0x6ca/0x890 executing program [ 76.191849][ T4110] ? _raw_spin_lock_irq+0x41/0x50 [ 76.191874][ T4110] _raw_spin_lock_irq+0x32/0x50 [ 76.191896][ T4110] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 76.191924][ T4110] io_poll_remove_entries.part.0+0x15f/0x7e0 [ 76.191953][ T4110] ? _raw_spin_unlock+0x36/0x40 [ 76.191976][ T4110] io_apoll_task_func+0xbd/0x230 [ 76.192006][ T4110] tctx_task_work+0x16a/0xe10 [ 76.192037][ T4110] ? ctx_flush_and_put+0x1b0/0x1b0 [ 76.192068][ T4110] task_work_run+0xdd/0x1a0 [ 76.192097][ T4110] do_exit+0xaff/0x2a00 [ 76.192124][ T4110] ? lock_downgrade+0x6e0/0x6e0 [ 76.192154][ T4110] ? mm_update_next_owner+0x7a0/0x7a0 [ 76.192187][ T4110] do_group_exit+0xd2/0x2f0 [ 76.192216][ T4110] __x64_sys_exit_group+0x3a/0x50 [ 76.192245][ T4110] do_syscall_64+0x35/0xb0 [ 76.192270][ T4110] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 76.192304][ T4110] RIP: 0033:0x7fd1eaa3a689 [ 76.192322][ T4110] Code: Unable to access opcode bytes at RIP 0x7fd1eaa3a65f. [ 76.192332][ T4110] RSP: 002b:00007ffe67b8b7a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 76.192356][ T4110] RAX: ffffffffffffffda RBX: 00007fd1eaaae330 RCX: 00007fd1eaa3a689 [ 76.192373][ T4110] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 76.192388][ T4110] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 76.192404][ T4110] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd1eaaae330 [ 76.192420][ T4110] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 76.192442][ T4110] [ 76.192449][ T4110] [ 76.192452][ T4110] Allocated by task 4110: [ 76.192461][ T4110] kasan_save_stack+0x1e/0x40 [ 76.192489][ T4110] __kasan_kmalloc+0xa9/0xd0 [ 76.192514][ T4110] io_uring_setup.cold+0x12e/0x27fc [ 76.192534][ T4110] do_syscall_64+0x35/0xb0 [ 76.192556][ T4110] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 76.192579][ T4110] [ 76.192582][ T4110] Freed by task 3650: [ 76.192591][ T4110] kasan_save_stack+0x1e/0x40 [ 76.192616][ T4110] kasan_set_track+0x21/0x30 [ 76.192641][ T4110] kasan_set_free_info+0x20/0x30 [ 76.192662][ T4110] ____kasan_slab_free+0x166/0x1a0 [ 76.192687][ T4110] slab_free_freelist_hook+0x8b/0x1c0 [ 76.192712][ T4110] kfree+0xd6/0x4d0 [ 76.192734][ T4110] io_ring_exit_work+0xe29/0xe74 [ 76.192752][ T4110] process_one_work+0x996/0x1610 [ 76.192773][ T4110] worker_thread+0x665/0x1080 [ 76.192793][ T4110] kthread+0x2e9/0x3a0 [ 76.192810][ T4110] ret_from_fork+0x1f/0x30 [ 76.192834][ T4110] [ 76.192837][ T4110] Last potentially related work creation: [ 76.192843][ T4110] kasan_save_stack+0x1e/0x40 [ 76.192868][ T4110] __kasan_record_aux_stack+0xbe/0xd0 [ 76.192889][ T4110] insert_work+0x48/0x350 [ 76.192908][ T4110] __queue_work+0x62e/0x1140 [ 76.192930][ T4110] queue_work_on+0xee/0x110 [ 76.192951][ T4110] io_ring_ctx_wait_and_kill+0x327/0x360 [ 76.192972][ T4110] io_uring_release+0x42/0x46 [ 76.192991][ T4110] __fput+0x277/0x9d0 [ 76.193008][ T4110] task_work_run+0xdd/0x1a0 [ 76.193031][ T4110] do_exit+0xaff/0x2a00 [ 76.193053][ T4110] do_group_exit+0xd2/0x2f0 [ 76.193077][ T4110] __x64_sys_exit_group+0x3a/0x50 [ 76.193103][ T4110] do_syscall_64+0x35/0xb0 [ 76.193124][ T4110] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 76.193146][ T4110] [ 76.193150][ T4110] The buggy address belongs to the object at ffff88807b7a9000 [ 76.193150][ T4110] which belongs to the cache kmalloc-2k of size 2048 [ 76.193167][ T4110] The buggy address is located 952 bytes inside of [ 76.193167][ T4110] 2048-byte region [ffff88807b7a9000, ffff88807b7a9800) [ 76.193189][ T4110] [ 76.193192][ T4110] The buggy address belongs to the physical page: [ 76.193199][ T4110] page:ffffea0001edea00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7b7a8 [ 76.193224][ T4110] head:ffffea0001edea00 order:3 compound_mapcount:0 compound_pincount:0 [ 76.193241][ T4110] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 76.193273][ T4110] raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888010c42000 [ 76.193300][ T4110] raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000 [ 76.193312][ T4110] page dumped because: kasan: bad access detected [ 76.193320][ T4110] page_owner tracks the page as allocated [ 76.193325][ T4110] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4110, tgid 4110 (syz-executor404), ts 76147822933, free_ts 76137859535 [ 76.193368][ T4110] get_page_from_freelist+0x1290/0x3b70 [ 76.193392][ T4110] __alloc_pages+0x1c7/0x510 [ 76.193413][ T4110] alloc_pages+0x1aa/0x310 [ 76.193431][ T4110] allocate_slab+0x26c/0x3c0 [ 76.193454][ T4110] ___slab_alloc+0x985/0xd90 [ 76.193477][ T4110] __slab_alloc.constprop.0+0x4d/0xa0 [ 76.193503][ T4110] __kmalloc+0x318/0x350 [ 76.193525][ T4110] io_uring_setup.cold+0x12e/0x27fc [ 76.193545][ T4110] do_syscall_64+0x35/0xb0 [ 76.193566][ T4110] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 76.193589][ T4110] page last free stack trace: [ 76.193594][ T4110] free_pcp_prepare+0x549/0xd20 [ 76.193614][ T4110] free_unref_page+0x19/0x6a0 [ 76.193634][ T4110] __unfreeze_partials+0x17c/0x1a0 [ 76.193659][ T4110] qlist_free_all+0x6a/0x170 [ 76.193680][ T4110] kasan_quarantine_reduce+0x180/0x200 [ 76.193703][ T4110] __kasan_slab_alloc+0xa2/0xc0 [ 76.193722][ T4110] kmem_cache_alloc+0x204/0x3b0 [ 76.193746][ T4110] vm_area_alloc+0x1c/0x110 [ 76.193768][ T4110] mmap_region+0x96e/0x1460 [ 76.193786][ T4110] do_mmap+0x863/0xfa0 [ 76.193804][ T4110] vm_mmap_pgoff+0x1b7/0x290 [ 76.193827][ T4110] ksys_mmap_pgoff+0x40d/0x5a0 [ 76.193847][ T4110] do_syscall_64+0x35/0xb0 [ 76.193868][ T4110] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 76.193891][ T4110] [ 76.193894][ T4110] Memory state around the buggy address: [ 76.193903][ T4110] ffff88807b7a9280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 76.193919][ T4110] ffff88807b7a9300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 76.193935][ T4110] >ffff88807b7a9380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 76.193946][ T4110] ^ [ 76.193957][ T4110] ffff88807b7a9400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 76.193972][ T4110] ffff88807b7a9480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 76.193984][ T4110] ================================================================== [ 76.193992][ T4110] Kernel panic - not syncing: panic_on_warn set ... [ 76.939252][ T4110] CPU: 0 PID: 4110 Comm: syz-executor404 Not tainted 5.18.0-syzkaller-11972-gd1dc87763f40 #0 [ 76.949418][ T4110] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.959493][ T4110] Call Trace: [ 76.962785][ T4110] [ 76.965726][ T4110] dump_stack_lvl+0xcd/0x134 [ 76.970345][ T4110] panic+0x2d7/0x636 [ 76.974261][ T4110] ? panic_print_sys_info.part.0+0x10b/0x10b [ 76.980269][ T4110] ? __lock_acquire+0x3ab9/0x5660 [ 76.985317][ T4110] end_report.part.0+0x3f/0x7c [ 76.990100][ T4110] kasan_report.cold+0x93/0x1c6 [ 76.994976][ T4110] ? __lock_acquire+0x3ab9/0x5660 [ 77.000030][ T4110] __lock_acquire+0x3ab9/0x5660 [ 77.004916][ T4110] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.010925][ T4110] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.016929][ T4110] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 77.023137][ T4110] lock_acquire+0x1ab/0x570 [ 77.027670][ T4110] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 77.033859][ T4110] ? lock_release+0x780/0x780 [ 77.038568][ T4110] ? lock_release+0x780/0x780 [ 77.043273][ T4110] ? io_poll_check_events+0x6ca/0x890 [ 77.048684][ T4110] ? _raw_spin_lock_irq+0x41/0x50 [ 77.053734][ T4110] _raw_spin_lock_irq+0x32/0x50 [ 77.058606][ T4110] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 77.064794][ T4110] io_poll_remove_entries.part.0+0x15f/0x7e0 [ 77.070801][ T4110] ? _raw_spin_unlock+0x36/0x40 [ 77.075685][ T4110] io_apoll_task_func+0xbd/0x230 [ 77.080661][ T4110] tctx_task_work+0x16a/0xe10 [ 77.085365][ T4110] ? ctx_flush_and_put+0x1b0/0x1b0 [ 77.090503][ T4110] task_work_run+0xdd/0x1a0 [ 77.095035][ T4110] do_exit+0xaff/0x2a00 [ 77.099215][ T4110] ? lock_downgrade+0x6e0/0x6e0 [ 77.104091][ T4110] ? mm_update_next_owner+0x7a0/0x7a0 [ 77.109495][ T4110] do_group_exit+0xd2/0x2f0 [ 77.114032][ T4110] __x64_sys_exit_group+0x3a/0x50 [ 77.119092][ T4110] do_syscall_64+0x35/0xb0 [ 77.123528][ T4110] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 77.129444][ T4110] RIP: 0033:0x7fd1eaa3a689 [ 77.133872][ T4110] Code: Unable to access opcode bytes at RIP 0x7fd1eaa3a65f. [ 77.141243][ T4110] RSP: 002b:00007ffe67b8b7a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 77.149673][ T4110] RAX: ffffffffffffffda RBX: 00007fd1eaaae330 RCX: 00007fd1eaa3a689 [ 77.157665][ T4110] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 77.165655][ T4110] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 [ 77.173655][ T4110] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd1eaaae330 [ 77.181650][ T4110] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 77.189649][ T4110] [ 77.192842][ T4110] Kernel Offset: disabled [ 77.197169][ T4110] Rebooting in 86400 seconds..