INFO: task syz.4.48:6670 blocked for more than 145 seconds. Not tainted 6.11.0-rc5-syzkaller-gdf54f4a16f82 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.48 state:D stack:0 pid:6670 tgid:6669 ppid:6404 flags:0x0000000d Call trace: __switch_to+0x418/0x658 arch/arm64/kernel/process.c:579 context_switch kernel/sched/core.c:5188 [inline] __schedule+0x13d4/0x2418 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6621 io_schedule+0x8c/0x124 kernel/sched/core.c:7401 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1307 __folio_lock+0x2c/0x3c mm/filemap.c:1645 folio_lock include/linux/pagemap.h:1050 [inline] z_erofs_fill_bio_vec fs/erofs/zdata.c:1470 [inline] z_erofs_submit_queue fs/erofs/zdata.c:1650 [inline] z_erofs_runqueue+0x838/0x17ec fs/erofs/zdata.c:1732 z_erofs_readahead+0x858/0xc18 fs/erofs/zdata.c:1863 read_pages+0x160/0x694 mm/readahead.c:160 page_cache_ra_unbounded+0x484/0x584 mm/readahead.c:273 do_page_cache_ra mm/readahead.c:303 [inline] force_page_cache_ra+0x22c/0x290 mm/readahead.c:332 force_page_cache_readahead mm/internal.h:338 [inline] generic_fadvise+0x3e8/0x6a0 mm/fadvise.c:106 vfs_fadvise mm/fadvise.c:185 [inline] ksys_fadvise64_64 mm/fadvise.c:199 [inline] __do_sys_fadvise64_64 mm/fadvise.c:207 [inline] __se_sys_fadvise64_64 mm/fadvise.c:205 [inline] __arm64_sys_fadvise64_64+0x12c/0x174 mm/fadvise.c:205 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 3 locks held by kworker/0:0/8: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000943e7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000d795d240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 1 lock held by khungtaskd/31: #0: ffff80008f6edba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:325 3 locks held by kworker/u8:4/151: #0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000983f7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by syslogd/5995: #0: ffff0001b3d09658 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:560 [inline] #0: ffff0001b3d09658 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1415 [inline] #0: ffff0001b3d09658 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1714 [inline] #0: ffff0001b3d09658 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2d8/0x2418 kernel/sched/core.c:6436 1 lock held by dhcpcd/6064: #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 2 locks held by getty/6153: #0: ffff0000d2bf50a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff8000983ab2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/0:4/6450: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000ac7b7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000c93db240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 3 locks held by kworker/0:6/6480: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff800099787c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff0000e5a55240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 1 lock held by syz.4.48/6670: #0: ffff0000eed24dd0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:854 [inline] #0: ffff0000eed24dd0 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_unbounded+0xc8/0x584 mm/readahead.c:225 3 locks held by kworker/u8:14/7081: #0: ffff0000d2580148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff8000a0197c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 5 locks held by kworker/u8:17/7355: #0: ffff0000c1869948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3205 #1: ffff80009eb57c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3205 #2: ffff8000923aa750 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594 #3: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 #4: ffff80008f6f2ef8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline] #4: ffff80008f6f2ef8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x354/0x674 kernel/rcu/tree_exp.h:958 1 lock held by syz-executor/8056: #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 1 lock held by syz-executor/8065: #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 1 lock held by syz-executor/8066: #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 1 lock held by syz-executor/8071: #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000923b6ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x5e8/0xa9c net/core/rtnetlink.c:6644 1 lock held by syz.0.342/8355: =============================================