INFO: task syz.3.359:6667 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.359 state:D stack:0 pid:6667 tgid:6657 ppid:4669 task_flags:0x400040 flags:0x00800001 Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1bec/0x2dcc kernel/sched/core.c:7189 __schedule_loop kernel/sched/core.c:7268 [inline] schedule+0x140/0x218 kernel/sched/core.c:7283 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7340 rwsem_down_write_slowpath+0x6b8/0x113c kernel/locking/rwsem.c:1215 __down_write_common kernel/locking/rwsem.c:1347 [inline] __down_write kernel/locking/rwsem.c:1356 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1626 filemap_invalidate_lock include/linux/fs.h:1084 [inline] blkdev_fallocate+0x22c/0x354 block/fops.c:908 vfs_fallocate+0x514/0x650 fs/open.c:338 madvise_remove mm/madvise.c:1039 [inline] madvise_vma_behavior+0x2778/0x3440 mm/madvise.c:1352 madvise_walk_vmas+0x4b4/0x9a4 mm/madvise.c:1713 madvise_do_behavior+0x5f4/0x7c4 mm/madvise.c:1929 do_madvise+0x1ac/0x278 mm/madvise.c:2022 __do_sys_madvise mm/madvise.c:2031 [inline] __se_sys_madvise mm/madvise.c:2029 [inline] __arm64_sys_madvise+0xa4/0xc0 mm/madvise.c:2029 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 INFO: task syz.3.359:6668 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.359 state:D stack:0 pid:6668 tgid:6657 ppid:4669 task_flags:0x440040 flags:0x00000001 Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1bec/0x2dcc kernel/sched/core.c:7189 __schedule_loop kernel/sched/core.c:7268 [inline] schedule+0x140/0x218 kernel/sched/core.c:7283 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7340 rwsem_down_read_slowpath+0x538/0x7c4 kernel/locking/rwsem.c:1114 __down_read_common kernel/locking/rwsem.c:1291 [inline] __down_read kernel/locking/rwsem.c:1304 [inline] down_read+0xa0/0x2bc kernel/locking/rwsem.c:1570 filemap_invalidate_lock_shared include/linux/fs.h:1094 [inline] page_cache_ra_order+0x304/0xe28 mm/readahead.c:497 do_sync_mmap_readahead+0x36c/0xa10 mm/filemap.c:-1 filemap_fault+0x640/0x1420 mm/filemap.c:3555 __do_fault+0xf4/0x4a0 mm/memory.c:5458 do_read_fault mm/memory.c:5893 [inline] do_fault mm/memory.c:6027 [inline] do_pte_missing+0x1918/0x28a4 mm/memory.c:4550 handle_pte_fault mm/memory.c:6411 [inline] __handle_mm_fault mm/memory.c:6549 [inline] handle_mm_fault+0x1564/0x245c mm/memory.c:6718 do_page_fault+0x4a8/0xb64 arch/arm64/mm/fault.c:747 do_translation_fault+0xc4/0x114 arch/arm64/mm/fault.c:840 do_mem_abort+0x70/0x190 arch/arm64/mm/fault.c:980 el1_abort+0x50/0x74 arch/arm64/kernel/entry-common.c:326 el1h_64_sync_handler+0xdc/0x130 arch/arm64/kernel/entry-common.c:453 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:589 __arch_copy_from_user+0x1b4/0x23c arch/arm64/lib/copy_template.S:174 (P) copy_from_iter include/linux/uio.h:228 [inline] copy_from_iter_full include/linux/uio.h:245 [inline] qrtr_tun_write_iter+0xe0/0x188 net/qrtr/tun.c:103 do_iter_readv_writev+0x48c/0x6f8 fs/read_write.c:-1 vfs_writev+0x2c8/0x664 fs/read_write.c:1059 do_writev+0x134/0x2a4 fs/read_write.c:1105 __do_sys_writev fs/read_write.c:1173 [inline] __se_sys_writev fs/read_write.c:1170 [inline] __arm64_sys_writev+0x80/0x94 fs/read_write.c:1170 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 Showing all locks held in the system: 6 locks held by kworker/u8:0/12: #0: ffff0000c004e140 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #0: ffff0000c004e140 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x748/0x1098 kernel/workqueue.c:3397 #1: ffff80008ea17c40 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline] #1: ffff80008ea17c40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x750/0x1098 kernel/workqueue.c:3397 #2: ffff800089b8a108 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x100/0x6b8 net/core/net_namespace.c:673 #3: ffff0000f1432128 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1040 [inline] #3: ffff0000f1432128 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:124 [inline] #3: ffff0000f1432128 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0xfc/0x30c net/devlink/core.c:555 #4: ffff0000f1436258 (&devlink->lock_key#8){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:292 [inline] #4: ffff0000f1436258 (&devlink->lock_key#8){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:125 [inline] #4: ffff0000f1436258 (&devlink->lock_key#8){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x110/0x30c net/devlink/core.c:555 #5: ffff800089b97600 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by khungtaskd/31: #0: ffff800088ad72a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline] #0: ffff800088ad72a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffff800088ad72a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 kernel/locking/lockdep.c:6775 3 locks held by kworker/u8:3/40: 2 locks held by getty/4451: #0: ffff0000d459a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009227e2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x354/0xf84 drivers/tty/n_tty.c:2211 1 lock held by syz.3.359/6664: 1 lock held by syz.3.359/6665: 2 locks held by syz.3.359/6667: #0: ffff0000c1555878 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] #0: ffff0000c1555878 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_fallocate+0x208/0x354 block/fops.c:907 #1: ffff0000c1555a10 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:1084 [inline] #1: ffff0000c1555a10 (mapping.invalidate_lock){++++}-{4:4}, at: blkdev_fallocate+0x22c/0x354 block/fops.c:908 1 lock held by syz.3.359/6668: #0: ffff0000c1555a10 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1094 [inline] #0: ffff0000c1555a10 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x304/0xe28 mm/readahead.c:497 7 locks held by syz-executor/6985: #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2724 [inline] #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x240/0xa14 fs/read_write.c:684 #1: ffff0000f264a080 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b4/0x3c0 fs/kernfs/file.c:343 #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f4/0x3c0 fs/kernfs/file.c:344 #3: ffff8000893944e0 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d0 drivers/net/netdevsim/bus.c:234 #4: ffff0000f033f128 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1040 [inline] #4: ffff0000f033f128 (&dev->mutex){....}-{4:4}, at: __device_driver_lock+0x8c/0xb8 drivers/base/dd.c:1174 #5: ffff0000f033e258 (&devlink->lock_key){+.+.}-{4:4}, at: devl_lock+0x24/0x34 net/devlink/core.c:292 #6: ffff800088adc778 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x58/0x4f8 kernel/rcu/tree.c:3828 4 locks held by syz-executor/7010: #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2724 [inline] #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x240/0xa14 fs/read_write.c:684 #1: ffff0000cfe00c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b4/0x3c0 fs/kernfs/file.c:343 #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f4/0x3c0 fs/kernfs/file.c:344 #3: ffff8000893944e0 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d0 drivers/net/netdevsim/bus.c:234 4 locks held by syz-executor/7038: #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2724 [inline] #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x240/0xa14 fs/read_write.c:684 #1: ffff0000f1896480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b4/0x3c0 fs/kernfs/file.c:343 #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f4/0x3c0 fs/kernfs/file.c:344 #3: ffff8000893944e0 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d0 drivers/net/netdevsim/bus.c:234 4 locks held by syz-executor/7078: #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2724 [inline] #0: ffff0000d4d0c410 (sb_writers#6){.+.+}-{0:0}, at: vfs_write+0x240/0xa14 fs/read_write.c:684 #1: ffff0000d5b1c480 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1b4/0x3c0 fs/kernfs/file.c:343 #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff0000c81eac38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f4/0x3c0 fs/kernfs/file.c:344 #3: ffff8000893944e0 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd8/0x2d0 drivers/net/netdevsim/bus.c:234 1 lock held by syz-executor/7172: #0: ffff800089b97600 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffff800089b97600 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock+0x38/0x10c net/core/rtnetlink.c:341 2 locks held by syz-executor/7201: 1 lock held by syz-executor/7247: #0: ffff800089b97600 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by syz-executor/7291: #0: ffff800089b97600 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80 1 lock held by dhcpcd-run-hook/7329: =============================================