INFO: task syz.2.11:6509 blocked for more than 143 seconds. Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.11 state:D stack:0 pid:6509 tgid:6508 ppid:6374 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5408 [inline] __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6837 __closure_sync+0x198/0x29c lib/closure.c:146 closure_sync include/linux/closure.h:194 [inline] bch2_extent_fallocate+0x1194/0x1a28 fs/bcachefs/io_misc.c:129 __bchfs_fallocate fs/bcachefs/fs-io.c:673 [inline] bchfs_fallocate fs/bcachefs/fs-io.c:736 [inline] bch2_fallocate_dispatch+0x19b8/0x2d50 fs/bcachefs/fs-io.c:783 vfs_fallocate+0x480/0x5bc fs/open.c:330 ioctl_preallocate+0x21c/0x2a0 fs/ioctl.c:291 do_vfs_ioctl+0x1b88/0x2404 fs/ioctl.c:886 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 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: 1 lock held by khungtaskd/31: #0: ffff80008f4b7be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 4 locks held by kworker/u8:7/695: #0: ffff0000c1881948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff800099ca7c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff800092137090 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:594 #3: ffff8000921432e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 1 lock held by dhcpcd/6042: #0: ffff8000921432e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by getty/6145: #0: ffff0000d7b510a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff8000980ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:5/6433: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222 #1: ffff800099fd7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222 #2: ffff8000921432e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by syz.2.11/6509: #0: ffff0000d7970420 (sb_writers#12){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline] #0: ffff0000d7970420 (sb_writers#12){.+.+}-{0:0}, at: vfs_fallocate+0x40c/0x5bc fs/open.c:329 #1: ffff0000eecd9020 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline] #1: ffff0000eecd9020 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: bch2_fallocate_dispatch+0x2dc/0x2d50 fs/bcachefs/fs-io.c:774 #2: ffff0000f1f042d8 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire+0x18/0x54 include/linux/srcu.h:115 1 lock held by syz-executor/9341: #0: ffff8000921432e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff8000921432e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xe64 net/core/rtnetlink.c:6632 2 locks held by syz.4.515/9490: #0: ffff0000c99c9678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0xf8/0x71c net/netlink/af_netlink.c:2418 #1: ffff8000921432e8 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0x48c/0xbf0 net/netlink/af_netlink.c:2336 3 locks held by syz.2.522/9524: #0: ffff8000921a4fd0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff8000921a4e88 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff8000921a4e88 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff8000921a4e88 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0xbb0 net/netlink/genetlink.c:1209 #2: ffff8000921432e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 2 locks held by syz.0.527/9578: #0: ffff8000921a4fd0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x28/0x50 net/netlink/genetlink.c:1218 #1: ffff8000921a4e88 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline] #1: ffff8000921a4e88 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline] #1: ffff8000921a4e88 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x10c/0xbb0 net/netlink/genetlink.c:1209 2 locks held by syz.3.529/9583: =============================================