INFO: task jfsCommit:110 blocked for more than 143 seconds. Not tainted 6.7.0-rc6-syzkaller-00248-g5254c0cbc92d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:28160 pid:110 tgid:110 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0xedb/0x5af0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6778 io_schedule+0xbe/0x130 kernel/sched/core.c:8998 __lock_metapage fs/jfs/jfs_metapage.c:50 [inline] lock_metapage+0x23c/0x4d0 fs/jfs/jfs_metapage.c:64 __get_metapage+0x3ce/0x1170 fs/jfs/jfs_metapage.c:639 diIAGRead.isra.0+0xcd/0x140 fs/jfs/jfs_imap.c:2666 diFree+0xa95/0x2760 fs/jfs/jfs_imap.c:956 jfs_evict_inode+0x3d4/0x4b0 fs/jfs/inode.c:156 evict+0x2ed/0x6b0 fs/inode.c:666 iput_final fs/inode.c:1777 [inline] iput.part.0+0x560/0x7b0 fs/inode.c:1803 iput+0x5c/0x80 fs/inode.c:1793 txUpdateMap+0xaef/0xd10 fs/jfs/jfs_txnmgr.c:2367 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x5da/0xb10 fs/jfs/jfs_txnmgr.c:2732 kthread+0x2c6/0x3a0 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 Showing all locks held in the system: 5 locks held by kworker/u4:0/11: 1 lock held by khungtaskd/29: #0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] #0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline] #0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 2 locks held by jfsCommit/109: #0: ffff888027e70920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2ff/0x2760 fs/jfs/jfs_imap.c:886 #1: ffff88807e15a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x31c/0x2760 fs/jfs/jfs_imap.c:891 2 locks held by jfsCommit/110: #0: ffff888023100920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2ff/0x2760 fs/jfs/jfs_imap.c:886 #1: ffff88807e34a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x31c/0x2760 fs/jfs/jfs_imap.c:891 2 locks held by getty/4815: #0: ffff88802a57a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201 1 lock held by syz-executor.0/5817: #0: ffff888074a020e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline] #0: ffff888074a020e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888074a020e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:516 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc6-syzkaller-00248-g5254c0cbc92d #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+0xf87/0x1210 kernel/hung_task.c:379 kthread+0x2c6/0x3a0 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1256 Comm: kworker/u4:6 Not tainted 6.7.0-rc6-syzkaller-00248-g5254c0cbc92d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:stack_access_ok+0x6/0x270 arch/x86/kernel/unwind_orc.c:389 Code: ff ff e8 3d 28 a4 00 48 8b 95 18 ff ff ff 48 8b 8d 28 ff ff ff 44 8b 85 30 ff ff ff e9 6f fe ff ff 0f 1f 00 41 57 41 56 41 55 <41> 54 55 48 89 f5 53 48 89 fb 4c 8d 63 08 48 83 ec 10 48 89 54 24 RSP: 0018:ffffc90004f9f1d8 EFLAGS: 00000293 RAX: ffffc90004f9f5f8 RBX: ffffc90004f9f278 RCX: ffffffff8139fdbd RDX: 0000000000000008 RSI: ffffc90004f9f5f8 RDI: ffffc90004f9f278 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000004 R10: 0000000000000002 R11: 0000000000000003 R12: ffffffff8fb0b8f2 R13: ffffc90004f9f600 R14: ffffffff8fb0b8f6 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564681384680 CR3: 000000000cd77000 CR4: 0000000000350ef0 Call Trace: deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline] unwind_next_frame+0xd87/0x2390 arch/x86/kernel/unwind_orc.c:585 arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1007 [inline] __kmalloc+0x59/0x90 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] kzalloc include/linux/slab.h:721 [inline] cfg80211_inform_single_bss_frame_data+0x342/0xf30 net/wireless/scan.c:2877 cfg80211_inform_bss_frame_data+0xbf/0x290 net/wireless/scan.c:2936 ieee80211_bss_info_update+0x300/0x8f0 net/mac80211/scan.c:205 ieee80211_rx_bss_info net/mac80211/ibss.c:1098 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1577 [inline] ieee80211_ibss_rx_queued_mgmt+0x1973/0x3120 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+0x886/0x15d0 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781 kthread+0x2c6/0x3a0 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