INFO: task syz-executor.2:12146 blocked for more than 143 seconds. Not tainted 6.7.0-rc6-next-20231222-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:30232 pid:12146 tgid:12136 ppid:5090 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf15/0x5c80 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6817 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874 rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline] __down_write_common+0x94c/0x13f0 kernel/locking/rwsem.c:1306 inode_lock include/linux/fs.h:802 [inline] chown_common+0x331/0x660 fs/open.c:778 do_fchownat+0x1ab/0x200 fs/open.c:819 __do_sys_chown fs/open.c:839 [inline] __se_sys_chown fs/open.c:837 [inline] __x64_sys_chown+0x7b/0xc0 fs/open.c:837 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f430dc7cce9 RSP: 002b:00007f430ea590c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005c RAX: ffffffffffffffda RBX: 00007f430dd9c050 RCX: 00007f430dc7cce9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f430dcc947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f430dd9c050 R15: 00007ffc329bcee8 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc6-next-20231222-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf86/0x1210 kernel/hung_task.c:379 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14025 Comm: kworker/u4:11 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:unwind_next_frame+0x474/0x2390 arch/x86/kernel/unwind_orc.c:494 Code: 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 98 19 00 00 c7 03 00 00 00 00 e9 db fb ff ff e8 6c ca 4d 00 <49> 83 ec 01 e9 29 fd ff ff e8 5e ca 4d 00 48 c7 c6 00 40 a1 90 4c RSP: 0018:ffffc90005a07510 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffffc90005a075e8 RCX: ffffffff813a467d RDX: ffff88807b980000 RSI: ffffffff813a4954 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8880b9829598 R12: ffffffff8132150f R13: 0000000000000000 R14: fffff52000b40ebe R15: ffffc90005a0761d FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c1dc573040 CR3: 000000002a36f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __unwind_start+0x5a2/0x880 arch/x86/kernel/unwind_orc.c:760 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xaf/0x170 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_set_track+0x24/0x30 mm/kasan/common.c:61 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:582 poison_slab_object+0x119/0x190 mm/kasan/common.c:233 __kasan_slab_free+0x14/0x30 mm/kasan/common.c:241 kasan_slab_free include/linux/kasan.h:183 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4303 [inline] kfree+0x129/0x370 mm/slub.c:4413 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1578 [inline] ieee80211_ibss_rx_queued_mgmt+0x1b17/0x3100 net/mac80211/ibss.c:1604 ieee80211_iface_process_skb net/mac80211/iface.c:1589 [inline] ieee80211_iface_work+0xa67/0xda0 net/mac80211/iface.c:1643 cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:437 process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242