Warning: Permanently added '10.128.0.250' (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 syzkaller login: [ 58.257321][ T3314] ================================================================== [ 58.265402][ T3314] BUG: KASAN: use-after-free in __lock_acquire+0x3eb0/0x56c0 [ 58.272774][ T3314] Read of size 8 at addr ffff88807dc21328 by task kworker/0:3/3314 [ 58.280649][ T3314] [ 58.282953][ T3314] CPU: 0 PID: 3314 Comm: kworker/0:3 Not tainted 5.18.0-rc3-syzkaller #0 [ 58.291353][ T3314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.301388][ T3314] Workqueue: events io_fallback_req_func [ 58.307018][ T3314] Call Trace: [ 58.310276][ T3314] [ 58.313195][ T3314] dump_stack_lvl+0xcd/0x134 [ 58.317771][ T3314] print_address_description.constprop.0.cold+0xeb/0x495 [ 58.324781][ T3314] ? __lock_acquire+0x3eb0/0x56c0 [ 58.329786][ T3314] kasan_report.cold+0xf4/0x1c6 [ 58.334624][ T3314] ? mark_lock.part.0+0xd0/0x1910 [ 58.339635][ T3314] ? __lock_acquire+0x3eb0/0x56c0 [ 58.344652][ T3314] __lock_acquire+0x3eb0/0x56c0 [ 58.349490][ T3314] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 58.355453][ T3314] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 58.361422][ T3314] lock_acquire+0x1ab/0x510 [ 58.365914][ T3314] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 58.372061][ T3314] ? lock_release+0x720/0x720 [ 58.376725][ T3314] ? lock_release+0x720/0x720 [ 58.381426][ T3314] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 58.387652][ T3314] ? io_poll_check_events+0x356/0x6e0 [ 58.393008][ T3314] ? _raw_spin_lock_irq+0x41/0x50 [ 58.398018][ T3314] _raw_spin_lock_irq+0x32/0x50 [ 58.402857][ T3314] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 58.409008][ T3314] io_poll_remove_entries.part.0+0x15f/0x7e0 [ 58.414978][ T3314] io_apoll_task_func+0xe6/0x270 [ 58.419901][ T3314] io_fallback_req_func+0xf9/0x1ae [ 58.424998][ T3314] ? io_put_req.part.0.cold+0x11/0x11 [ 58.430355][ T3314] process_one_work+0x996/0x1610 [ 58.435286][ T3314] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 58.440652][ T3314] ? rwlock_bug.part.0+0x90/0x90 [ 58.445571][ T3314] ? _raw_spin_lock_irq+0x41/0x50 [ 58.450579][ T3314] worker_thread+0x665/0x1080 [ 58.455239][ T3314] ? __kthread_parkme+0x15f/0x220 [ 58.460248][ T3314] ? process_one_work+0x1610/0x1610 [ 58.465427][ T3314] kthread+0x2e9/0x3a0 [ 58.469476][ T3314] ? kthread_complete_and_exit+0x40/0x40 [ 58.475089][ T3314] ret_from_fork+0x1f/0x30 [ 58.479493][ T3314] [ 58.482489][ T3314] [ 58.484789][ T3314] Allocated by task 4579: [ 58.489094][ T3314] kasan_save_stack+0x1e/0x40 [ 58.493753][ T3314] __kasan_kmalloc+0xa9/0xd0 [ 58.498319][ T3314] io_uring_setup.cold+0x133/0x257d [ 58.503493][ T3314] do_syscall_64+0x35/0xb0 [ 58.507888][ T3314] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 58.513758][ T3314] [ 58.516058][ T3314] Freed by task 3626: [ 58.520009][ T3314] kasan_save_stack+0x1e/0x40 [ 58.524663][ T3314] kasan_set_track+0x21/0x30 [ 58.529229][ T3314] kasan_set_free_info+0x20/0x30 [ 58.534143][ T3314] ____kasan_slab_free+0x166/0x1a0 [ 58.539228][ T3314] slab_free_freelist_hook+0x8b/0x1c0 [ 58.544580][ T3314] kfree+0xd6/0x4d0 [ 58.548364][ T3314] io_ring_exit_work+0xf57/0xf9d [ 58.553282][ T3314] process_one_work+0x996/0x1610 [ 58.558200][ T3314] worker_thread+0x665/0x1080 [ 58.562852][ T3314] kthread+0x2e9/0x3a0 [ 58.566895][ T3314] ret_from_fork+0x1f/0x30 [ 58.571289][ T3314] [ 58.573590][ T3314] Last potentially related work creation: [ 58.579276][ T3314] kasan_save_stack+0x1e/0x40 [ 58.583934][ T3314] __kasan_record_aux_stack+0xbe/0xd0 [ 58.589285][ T3314] insert_work+0x48/0x350 [ 58.593597][ T3314] __queue_work+0x62e/0x1140 [ 58.598162][ T3314] queue_work_on+0xee/0x110 [ 58.602637][ T3314] io_ring_ctx_wait_and_kill+0x2f2/0x327 [ 58.608245][ T3314] io_uring_release+0x42/0x46 [ 58.612895][ T3314] __fput+0x277/0x9d0 [ 58.616853][ T3314] task_work_run+0xdd/0x1a0 [ 58.621335][ T3314] do_exit+0xaff/0x2a00 [ 58.625470][ T3314] io_sq_thread.cold+0x1b9/0x1c3 [ 58.630384][ T3314] ret_from_fork+0x1f/0x30 [ 58.634778][ T3314] [ 58.637077][ T3314] The buggy address belongs to the object at ffff88807dc21000 [ 58.637077][ T3314] which belongs to the cache kmalloc-2k of size 2048 [ 58.651104][ T3314] The buggy address is located 808 bytes inside of [ 58.651104][ T3314] 2048-byte region [ffff88807dc21000, ffff88807dc21800) [ 58.664437][ T3314] [ 58.666737][ T3314] The buggy address belongs to the physical page: [ 58.673122][ T3314] page:ffffea0001f70800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7dc20 [ 58.683248][ T3314] head:ffffea0001f70800 order:3 compound_mapcount:0 compound_pincount:0 [ 58.691543][ T3314] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 58.699503][ T3314] raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888010c42000 [ 58.708062][ T3314] raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000 [ 58.716614][ T3314] page dumped because: kasan: bad access detected [ 58.722997][ T3314] page_owner tracks the page as allocated [ 58.728682][ T3314] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4579, tgid 4579 (syz-executor771), ts 58231839072, free_ts 58158976115 [ 58.750273][ T3314] get_page_from_freelist+0xba2/0x3e00 [ 58.755717][ T3314] __alloc_pages+0x1b2/0x500 [ 58.760289][ T3314] alloc_pages+0x1aa/0x310 [ 58.764679][ T3314] allocate_slab+0x26c/0x3c0 [ 58.769245][ T3314] ___slab_alloc+0x8df/0xf20 [ 58.773808][ T3314] __slab_alloc.constprop.0+0x4d/0xa0 [ 58.779156][ T3314] __kmalloc+0x318/0x350 [ 58.783374][ T3314] sk_prot_alloc+0x110/0x290 [ 58.787942][ T3314] sk_alloc+0x36/0x770 [ 58.791983][ T3314] alg_create+0x9a/0x150 [ 58.796202][ T3314] __sock_create+0x353/0x790 [ 58.800780][ T3314] __sys_socket+0xef/0x200 [ 58.805173][ T3314] __x64_sys_socket+0x6f/0xb0 [ 58.809824][ T3314] do_syscall_64+0x35/0xb0 [ 58.814219][ T3314] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 58.820092][ T3314] page last free stack trace: [ 58.824739][ T3314] free_pcp_prepare+0x549/0xd20 [ 58.829568][ T3314] free_unref_page+0x19/0x6a0 [ 58.834224][ T3314] __unfreeze_partials+0x17c/0x1a0 [ 58.839313][ T3314] qlist_free_all+0x6a/0x170 [ 58.843878][ T3314] kasan_quarantine_reduce+0x180/0x200 [ 58.849312][ T3314] __kasan_slab_alloc+0xa2/0xc0 [ 58.854137][ T3314] kmem_cache_alloc_node+0x255/0x3f0 [ 58.859396][ T3314] __alloc_skb+0x215/0x340 [ 58.863791][ T3314] tcp_stream_alloc_skb+0x66/0x900 [ 58.868877][ T3314] tcp_sendmsg_locked+0xac8/0x2fb0 [ 58.873964][ T3314] tcp_sendmsg+0x2b/0x40 [ 58.878181][ T3314] inet_sendmsg+0x99/0xe0 [ 58.882486][ T3314] sock_sendmsg+0xcf/0x120 [ 58.886879][ T3314] sock_write_iter+0x283/0x3c0 [ 58.891620][ T3314] new_sync_write+0x38a/0x560 [ 58.896273][ T3314] vfs_write+0x7c0/0xac0 [ 58.900493][ T3314] [ 58.902793][ T3314] Memory state around the buggy address: [ 58.908395][ T3314] ffff88807dc21200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.916431][ T3314] ffff88807dc21280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.924466][ T3314] >ffff88807dc21300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.932497][ T3314] ^ [ 58.937838][ T3314] ffff88807dc21380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.945871][ T3314] ffff88807dc21400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.953900][ T3314] ================================================================== [ 58.961929][ T3314] Kernel panic - not syncing: panic_on_warn set ... [ 58.968485][ T3314] CPU: 0 PID: 3314 Comm: kworker/0:3 Not tainted 5.18.0-rc3-syzkaller #0 [ 58.976875][ T3314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.986905][ T3314] Workqueue: events io_fallback_req_func [ 58.992518][ T3314] Call Trace: [ 58.995774][ T3314] [ 58.998683][ T3314] dump_stack_lvl+0xcd/0x134 [ 59.003260][ T3314] panic+0x2d7/0x636 [ 59.007136][ T3314] ? panic_print_sys_info.part.0+0x10b/0x10b [ 59.013113][ T3314] ? __lock_acquire+0x3eb0/0x56c0 [ 59.018118][ T3314] end_report.part.0+0x3f/0x7c [ 59.022859][ T3314] kasan_report.cold+0x93/0x1c6 [ 59.027687][ T3314] ? mark_lock.part.0+0xd0/0x1910 [ 59.032692][ T3314] ? __lock_acquire+0x3eb0/0x56c0 [ 59.037695][ T3314] __lock_acquire+0x3eb0/0x56c0 [ 59.042528][ T3314] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 59.048486][ T3314] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 59.054445][ T3314] lock_acquire+0x1ab/0x510 [ 59.058926][ T3314] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 59.065061][ T3314] ? lock_release+0x720/0x720 [ 59.069718][ T3314] ? lock_release+0x720/0x720 [ 59.074373][ T3314] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 59.080588][ T3314] ? io_poll_check_events+0x356/0x6e0 [ 59.085936][ T3314] ? _raw_spin_lock_irq+0x41/0x50 [ 59.090942][ T3314] _raw_spin_lock_irq+0x32/0x50 [ 59.095772][ T3314] ? io_poll_remove_entries.part.0+0x15f/0x7e0 [ 59.101908][ T3314] io_poll_remove_entries.part.0+0x15f/0x7e0 [ 59.107871][ T3314] io_apoll_task_func+0xe6/0x270 [ 59.112788][ T3314] io_fallback_req_func+0xf9/0x1ae [ 59.117880][ T3314] ? io_put_req.part.0.cold+0x11/0x11 [ 59.123228][ T3314] process_one_work+0x996/0x1610 [ 59.128147][ T3314] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 59.133497][ T3314] ? rwlock_bug.part.0+0x90/0x90 [ 59.138414][ T3314] ? _raw_spin_lock_irq+0x41/0x50 [ 59.143419][ T3314] worker_thread+0x665/0x1080 [ 59.148076][ T3314] ? __kthread_parkme+0x15f/0x220 [ 59.153076][ T3314] ? process_one_work+0x1610/0x1610 [ 59.158255][ T3314] kthread+0x2e9/0x3a0 [ 59.162300][ T3314] ? kthread_complete_and_exit+0x40/0x40 [ 59.167906][ T3314] ret_from_fork+0x1f/0x30 [ 59.172306][ T3314] [ 59.175658][ T3314] Kernel Offset: disabled [ 59.179966][ T3314] Rebooting in 86400 seconds..