INFO: task syz-executor.5:3632 blocked for more than 143 seconds. Not tainted 6.1.0-rc1-syzkaller-00134-ge35184f32151 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:24256 pid:3632 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 wb_wait_for_completion+0x17e/0x240 fs/fs-writeback.c:191 __writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2620 sync_filesystem.part.0+0x1f/0x1d0 fs/sync.c:54 sync_filesystem+0x8b/0xc0 fs/sync.c:43 generic_shutdown_super+0x70/0x410 fs/super.c:473 kill_block_super+0x97/0xf0 fs/super.c:1427 kill_f2fs_super+0x2ab/0x3c0 fs/f2fs/super.c:4612 deactivate_locked_super+0x94/0x160 fs/super.c:331 deactivate_super+0xad/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0x16b/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f843e68ca67 RSP: 002b:00007ffc5e2cc3c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f843e68ca67 RDX: 00007ffc5e2cc49c RSI: 000000000000000a RDI: 00007ffc5e2cc490 RBP: 00007ffc5e2cc490 R08: 00000000ffffffff R09: 00007ffc5e2cc260 R10: 00005555567ff8b3 R11: 0000000000000246 R12: 00007f843e6e5826 R13: 00007ffc5e2cd550 R14: 00005555567ff810 R15: 00007ffc5e2cd590 INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc1-syzkaller-00134-ge35184f32151 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc71/0xfc0 kernel/hung_task.c:377 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 28156 Comm: kworker/u4:30 Not tainted 6.1.0-rc1-syzkaller-00134-ge35184f32151 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Workqueue: phy3 ieee80211_iface_work RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:207 Code: 48 89 ef 5d e9 91 0d 34 00 5d be 03 00 00 00 e9 b6 65 87 02 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 49 e4 85 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc90015cff578 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88807e560000 RSI: ffffffff88db8506 RDI: 0000000000000007 RBP: ffff88807bae9094 R08: 0000000000000007 R09: 0000000000000001 R10: 0000000000000000 R11: 000000000008c07e R12: ffff88807bae909c R13: dffffc0000000000 R14: 0000000000000007 R15: ffff88807bae909c FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c030174420 CR3: 000000000bc8e000 CR4: 0000000000350ee0 Call Trace: _ieee802_11_parse_elems_full+0x4e4/0x2e00 net/mac80211/util.c:1430 ieee802_11_parse_elems_full+0x72e/0x1310 net/mac80211/util.c:1530 ieee802_11_parse_elems_crc.constprop.0+0xb5/0xf0 net/mac80211/ieee80211_i.h:2241 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2248 [inline] ieee80211_bss_info_update+0x40c/0xaf0 net/mac80211/scan.c:212 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x1a31/0x3190 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline] ieee80211_iface_work+0xa47/0xd30 net/mac80211/iface.c:1684 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306