INFO: task syz-executor.3:4522 blocked for more than 143 seconds. Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:28272 pid: 4522 ppid: 3646 flags:0x20004004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0xa94/0x4910 kernel/sched/core.c:6304 schedule+0xd2/0x1f0 kernel/sched/core.c:6376 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x2af/0x360 kernel/sched/completion.c:106 io_wq_exit_workers fs/io-wq.c:1264 [inline] io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1299 io_uring_clean_tctx fs/io_uring.c:10512 [inline] io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10582 io_uring_files_cancel include/linux/io_uring.h:18 [inline] do_exit+0x4f9/0x29d0 kernel/exit.c:761 do_group_exit+0xd2/0x2f0 kernel/exit.c:936 get_signal+0x45a/0x2490 kernel/signal.c:2903 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:186 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:221 __syscall_exit_to_user_mode_work kernel/entry/common.c:303 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:314 __do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6ed3549 RSP: 002b:00000000f58cd67c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0 RAX: fffffffffffffe00 RBX: 00000000f702ffa8 RCX: 0000000000000080 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f702ffac RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 982 Comm: kworker/u4:4 Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy9 ieee80211_iface_work RIP: 0010:ieee80211_sta_get_rates+0x2b5/0x960 net/mac80211/util.c:2125 Code: e7 07 48 c1 ea 03 0f b6 04 02 40 38 f8 7f 08 84 c0 0f 85 9e 06 00 00 48 8b 44 24 18 48 8d b0 f6 01 00 00 0f b6 98 f2 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 89 f2 48 89 74 24 48 83 e6 07 48 RSP: 0018:ffffc90004b8fa50 EFLAGS: 00000246 RAX: ffff888016c24000 RBX: 0000000000000008 RCX: ffffffff815db4b1 RDX: 1ffff11002d8483e RSI: ffff888016c241f6 RDI: 0000000000000002 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d941b17 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888068ad86c0 R14: 000000000000000c R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e56fc4a288 CR3: 000000000b88e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_update_sta_info net/mac80211/ibss.c:1003 [inline] ieee80211_rx_bss_info net/mac80211/ibss.c:1117 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline] ieee80211_ibss_rx_queued_mgmt+0x1131/0x3150 net/mac80211/ibss.c:1639 ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline] ieee80211_iface_work+0xa69/0xd00 net/mac80211/iface.c:1581 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: e7 07 out %eax,$0x7 2: 48 c1 ea 03 shr $0x3,%rdx 6: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax a: 40 38 f8 cmp %dil,%al d: 7f 08 jg 0x17 f: 84 c0 test %al,%al 11: 0f 85 9e 06 00 00 jne 0x6b5 17: 48 8b 44 24 18 mov 0x18(%rsp),%rax 1c: 48 8d b0 f6 01 00 00 lea 0x1f6(%rax),%rsi 23: 0f b6 98 f2 01 00 00 movzbl 0x1f2(%rax),%ebx * 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 31: fc ff df 34: 48 89 f2 mov %rsi,%rdx 37: 48 89 74 24 48 mov %rsi,0x48(%rsp) 3c: 83 e6 07 and $0x7,%esi 3f: 48 rex.W