INFO: task syz.1.273:8100 blocked for more than 143 seconds. Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.273 state:D stack:0 pid:8100 tgid:8092 ppid:6529 task_flags:0x400040 flags:0x00000001 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5397 [inline] __schedule+0x141c/0x2a14 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6879 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6936 rwsem_down_write_slowpath+0xa80/0x10f0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1578 filemap_invalidate_lock include/linux/fs.h:924 [inline] blkdev_fallocate+0x1b4/0x3e8 block/fops.c:878 vfs_fallocate+0x5cc/0x73c fs/open.c:341 madvise_remove mm/madvise.c:1043 [inline] madvise_vma_behavior mm/madvise.c:1274 [inline] madvise_walk_vmas mm/madvise.c:1541 [inline] madvise_do_behavior+0x1424/0x2860 mm/madvise.c:1733 do_madvise+0x174/0x224 mm/madvise.c:1826 __do_sys_madvise mm/madvise.c:1835 [inline] __se_sys_madvise mm/madvise.c:1833 [inline] __arm64_sys_madvise+0xa4/0xc0 mm/madvise.c:1833 __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+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 3 locks held by kworker/0:1/10: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff800097a77bc0 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff80008f86f3c0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x58/0x528 kernel/rcu/tree.c:3786 1 lock held by khungtaskd/32: #0: ffff80008f869980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:3/42: 3 locks held by kworker/u8:7/592: 2 locks held by kworker/0:2/1816: #0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a09f7bc0 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 2 locks held by getty/6294: #0: ffff0000d30640a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba4b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 2 locks held by kworker/1:4/6579: 6 locks held by kworker/u8:13/7154: #0: ffff0000c18a2148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3212 #1: ffff8000a3e17bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3212 #2: ffff8000928bb010 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x6c0 net/core/net_namespace.c:662 #3: ffff0000dda7b0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline] #3: ffff0000dda7b0e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff0000dda7b0e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0xe4/0x380 net/devlink/core.c:506 #4: ffff0000dda7c250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff0000dda7c250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff0000dda7c250 (&devlink->lock_key#5){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0xf0/0x380 net/devlink/core.c:506 #5: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 2 locks held by syz.1.273/8096: 2 locks held by syz.1.273/8099: 2 locks held by syz.1.273/8100: #0: ffff0000c14863b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:869 [inline] #0: ffff0000c14863b0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_fallocate+0x190/0x3e8 block/fops.c:877 #1: ffff0000c1486550 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:924 [inline] #1: ffff0000c1486550 (mapping.invalidate_lock){++++}-{4:4}, at: blkdev_fallocate+0x1b4/0x3e8 block/fops.c:878 2 locks held by syz-executor/8231: 1 lock held by syz-executor/8245: 3 locks held by syz-executor/8257: 1 lock held by syz-executor/8260: 2 locks held by syz-executor/8296: 1 lock held by syz-executor/8306: #0: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffff8000928c7ba8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x710/0x15dc net/core/rtnetlink.c:4054 2 locks held by syz-executor/8326: 1 lock held by syz-executor/8332: 1 lock held by dhcpcd/8333: #0: ffff80008f93e5e8 (pcpu_alloc_mutex){+.+.}-{4:4}, at: pcpu_alloc_noprof+0x224/0x18c0 mm/percpu.c:1782 =============================================