INFO: task syz-executor.1:30334 blocked for more than 143 seconds. Not tainted 6.4.0-rc7-syzkaller-00072-gdad9774deaf1 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:24384 pid:30334 ppid:5054 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x187b/0x4900 kernel/sched/core.c:6669 schedule+0xc3/0x180 kernel/sched/core.c:6745 xlog_grant_head_wait+0x387/0x910 fs/xfs/xfs_log.c:307 xlog_grant_head_check+0x299/0x480 xfs_log_reserve+0x3c4/0xb10 fs/xfs/xfs_log.c:486 xlog_unmount_write fs/xfs/xfs_log.c:994 [inline] xfs_log_unmount_write fs/xfs/xfs_log.c:1065 [inline] xfs_log_clean+0x218/0xc10 fs/xfs/xfs_log.c:1117 xfs_log_unmount+0x2c/0x1c0 fs/xfs/xfs_log.c:1131 xfs_mountfs+0x11e5/0x1f10 fs/xfs/xfs_mount.c:1019 xfs_fs_fill_super+0xfd7/0x1230 fs/xfs/xfs_super.c:1694 get_tree_bdev+0x405/0x620 fs/super.c:1303 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f817c48d8ba RSP: 002b:00007f817d270f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000000bb93 RCX: 00007f817c48d8ba RDX: 000000002000bb00 RSI: 000000002000bb40 RDI: 00007f817d270fe0 RBP: 00007f817d271020 R08: 00007f817d271020 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000202 R12: 000000002000bb00 R13: 000000002000bb40 R14: 00007f817d270fe0 R15: 0000000020000040 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/28: #0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/4754: #0: ffff88814b4f2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176 2 locks held by kworker/u4:23/21809: 1 lock held by syz-executor.1/30334: #0: ffff88803a7b20e0 (&type->s_umount_key#57/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228 1 lock held by syz-executor.4/373: #0: ffff88803a7b20e0 (&type->s_umount_key#60){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc7-syzkaller-00072-gdad9774deaf1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xec2/0xf00 kernel/hung_task.c:379 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 21815 Comm: kworker/u4:29 Not tainted 6.4.0-rc7-syzkaller-00072-gdad9774deaf1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: phy24 ieee80211_iface_work RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:203 Code: 00 00 00 00 00 0f 1f 44 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d 74 5f ca 0c 48 89 de 5b e9 13 02 57 00 0f 1f 00 0f 1e fa 48 8b 04 24 65 48 8b 0d 80 35 78 7e 65 8b 15 81 35 78 RSP: 0018:ffffc900039cf838 EFLAGS: 00000297 RAX: 0000000000000000 RBX: 000000000000000a RCX: dffffc0000000000 RDX: ffff88803ff79dc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff8a3805cb R09: fffffbfff1cabba6 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88808273b410 R13: ffff88808273df78 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000899000 CR3: 000000000cd30000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_sta_get_rates+0x3c9/0x720 net/mac80211/util.c:2311 ieee80211_update_sta_info net/mac80211/ibss.c:1003 [inline] ieee80211_rx_bss_info net/mac80211/ibss.c:1118 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x1133/0x2cf0 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1594 [inline] ieee80211_iface_work+0x7bd/0xd00 net/mac80211/iface.c:1648 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405 worker_thread+0xa63/0x1210 kernel/workqueue.c:2552 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308