====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.6.7514/29934 is trying to acquire lock: ffffffff8e970e88 (pcpu_alloc_mutex){+.+.}-{4:4}, at: pcpu_alloc_noprof+0xedc/0x1c50 mm/percpu.c:1788 but task is already holding lock: ffffffff8e694fe8 (wq_pool_mutex){+.+.}-{4:4}, at: apply_wqattrs_lock kernel/workqueue.c:5278 [inline] ffffffff8e694fe8 (wq_pool_mutex){+.+.}-{4:4}, at: __alloc_workqueue+0x858/0x1880 kernel/workqueue.c:5831 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #9 (wq_pool_mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 apply_wqattrs_lock kernel/workqueue.c:5278 [inline] __alloc_workqueue+0x858/0x1880 kernel/workqueue.c:5831 alloc_workqueue_noprof+0xd2/0x200 kernel/workqueue.c:5883 padata_alloc+0xc7/0x410 kernel/padata.c:966 pcrypt_init_padata+0x19/0x100 crypto/pcrypt.c:328 pcrypt_init+0x72/0xf0 crypto/pcrypt.c:353 do_one_initcall+0x11d/0x760 init/main.c:1382 do_initcall_level init/main.c:1444 [inline] do_initcalls init/main.c:1460 [inline] do_basic_setup init/main.c:1479 [inline] kernel_init_freeable+0x6e5/0x7a0 init/main.c:1692 kernel_init+0x1f/0x1e0 init/main.c:1582 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #8 (cpu_hotplug_lock){++++}-{0:0}: percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read include/linux/percpu-rwsem.h:77 [inline] cpus_read_lock+0x42/0x170 kernel/cpu.c:490 static_key_slow_inc+0x12/0x30 kernel/jump_label.c:190 fl_create+0x7fb/0xd10 net/ipv6/ip6_flowlabel.c:457 ipv6_flowlabel_get net/ipv6/ip6_flowlabel.c:637 [inline] ipv6_flowlabel_opt+0x519/0x2d40 net/ipv6/ip6_flowlabel.c:740 do_ipv6_setsockopt+0x1b9e/0x4510 net/ipv6/ipv6_sockglue.c:936 ipv6_setsockopt+0xcb/0x170 net/ipv6/ipv6_sockglue.c:973 sctp_setsockopt+0x161/0xb370 net/sctp/socket.c:4586 do_sock_setsockopt+0xf3/0x1d0 net/socket.c:2322 __sys_setsockopt+0x195/0x220 net/socket.c:2347 __do_sys_setsockopt net/socket.c:2353 [inline] __se_sys_setsockopt net/socket.c:2350 [inline] __x64_sys_setsockopt+0xbd/0x160 net/socket.c:2350 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #7 (sk_lock-AF_INET6){+.+.}-{0:0}: lock_sock_nested+0x41/0xf0 net/core/sock.c:3780 lock_sock include/net/sock.h:1709 [inline] inet_shutdown+0x67/0x410 net/ipv4/af_inet.c:919 nbd_mark_nsock_dead+0xae/0x5c0 drivers/block/nbd.c:318 sock_shutdown+0x16b/0x200 drivers/block/nbd.c:411 nbd_clear_sock drivers/block/nbd.c:1427 [inline] nbd_config_put+0x1eb/0x750 drivers/block/nbd.c:1451 nbd_genl_connect+0xaf8/0x1a40 drivers/block/nbd.c:2248 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0x9e1/0xb70 net/socket.c:2592 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2646 __sys_sendmsg+0x170/0x220 net/socket.c:2678 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #6 (&nsock->tx_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 nbd_handle_cmd drivers/block/nbd.c:1143 [inline] nbd_queue_rq+0x428/0x1080 drivers/block/nbd.c:1207 blk_mq_dispatch_rq_list+0x422/0x1e70 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xcea/0x1620 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x1c0 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x23c/0x670 block/blk-mq.c:2386 blk_mq_dispatch_list+0x51d/0x1360 block/blk-mq.c:2949 blk_mq_flush_plug_list block/blk-mq.c:2997 [inline] blk_mq_flush_plug_list+0x130/0x600 block/blk-mq.c:2969 __blk_flush_plug+0x2c4/0x4b0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x584/0x6c0 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x562/0xc10 block/blk-core.c:753 submit_bio_noacct+0xd17/0x2010 block/blk-core.c:884 blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline] submit_bh_wbc+0x59c/0x770 fs/buffer.c:2821 submit_bh fs/buffer.c:2826 [inline] block_read_full_folio+0x4c8/0x8e0 fs/buffer.c:2458 filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2501 do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4101 read_mapping_folio include/linux/pagemap.h:1028 [inline] read_part_sector+0xd1/0x370 block/partitions/core.c:723 adfspart_check_ICS+0x93/0x910 block/partitions/acorn.c:360 check_partition block/partitions/core.c:142 [inline] blk_add_partitions block/partitions/core.c:590 [inline] bdev_disk_changed+0x7f8/0xc80 block/partitions/core.c:694 blkdev_get_whole+0x187/0x290 block/bdev.c:764 bdev_open+0x2c7/0xe40 block/bdev.c:973 blkdev_open+0x34e/0x4f0 block/fops.c:697 do_dentry_open+0x6d8/0x1660 fs/open.c:949 vfs_open+0x82/0x3f0 fs/open.c:1081 do_open fs/namei.c:4671 [inline] path_openat+0x208c/0x31a0 fs/namei.c:4830 do_file_open+0x20e/0x430 fs/namei.c:4859 do_sys_openat2+0x10d/0x1e0 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #5 (&cmd->lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 nbd_queue_rq+0xba/0x1080 drivers/block/nbd.c:1199 blk_mq_dispatch_rq_list+0x422/0x1e70 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xcea/0x1620 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x1c0 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x23c/0x670 block/blk-mq.c:2386 blk_mq_dispatch_list+0x51d/0x1360 block/blk-mq.c:2949 blk_mq_flush_plug_list block/blk-mq.c:2997 [inline] blk_mq_flush_plug_list+0x130/0x600 block/blk-mq.c:2969 __blk_flush_plug+0x2c4/0x4b0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x584/0x6c0 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x562/0xc10 block/blk-core.c:753 submit_bio_noacct+0xd17/0x2010 block/blk-core.c:884 blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline] submit_bh_wbc+0x59c/0x770 fs/buffer.c:2821 submit_bh fs/buffer.c:2826 [inline] block_read_full_folio+0x4c8/0x8e0 fs/buffer.c:2458 filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2501 do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4101 read_mapping_folio include/linux/pagemap.h:1028 [inline] read_part_sector+0xd1/0x370 block/partitions/core.c:723 adfspart_check_ICS+0x93/0x910 block/partitions/acorn.c:360 check_partition block/partitions/core.c:142 [inline] blk_add_partitions block/partitions/core.c:590 [inline] bdev_disk_changed+0x7f8/0xc80 block/partitions/core.c:694 blkdev_get_whole+0x187/0x290 block/bdev.c:764 bdev_open+0x2c7/0xe40 block/bdev.c:973 blkdev_open+0x34e/0x4f0 block/fops.c:697 do_dentry_open+0x6d8/0x1660 fs/open.c:949 vfs_open+0x82/0x3f0 fs/open.c:1081 do_open fs/namei.c:4671 [inline] path_openat+0x208c/0x31a0 fs/namei.c:4830 do_file_open+0x20e/0x430 fs/namei.c:4859 do_sys_openat2+0x10d/0x1e0 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1383 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #4 (set->srcu){.+.+}-{0:0}: srcu_lock_sync include/linux/srcu.h:199 [inline] __synchronize_srcu+0xa1/0x2a0 kernel/rcu/srcutree.c:1505 blk_mq_wait_quiesce_done block/blk-mq.c:284 [inline] blk_mq_wait_quiesce_done block/blk-mq.c:281 [inline] blk_mq_quiesce_queue block/blk-mq.c:304 [inline] blk_mq_quiesce_queue+0x149/0x1c0 block/blk-mq.c:299 elevator_switch+0x17b/0x7e0 block/elevator.c:576 elevator_change+0x352/0x530 block/elevator.c:681 elevator_set_default+0x29e/0x360 block/elevator.c:754 blk_register_queue+0x412/0x590 block/blk-sysfs.c:946 __add_disk+0x73f/0xe40 block/genhd.c:528 add_disk_fwnode+0x118/0x5c0 block/genhd.c:597 add_disk include/linux/blkdev.h:785 [inline] nbd_dev_add+0x77a/0xb10 drivers/block/nbd.c:1984 nbd_init+0x291/0x2b0 drivers/block/nbd.c:2692 do_one_initcall+0x11d/0x760 init/main.c:1382 do_initcall_level init/main.c:1444 [inline] do_initcalls init/main.c:1460 [inline] do_basic_setup init/main.c:1479 [inline] kernel_init_freeable+0x6e5/0x7a0 init/main.c:1692 kernel_init+0x1f/0x1e0 init/main.c:1582 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #3 (&q->elevator_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 elevator_change+0x1bc/0x530 block/elevator.c:679 elevator_set_none+0x92/0xf0 block/elevator.c:769 blk_mq_elv_switch_none block/blk-mq.c:5110 [inline] __blk_mq_update_nr_hw_queues block/blk-mq.c:5155 [inline] blk_mq_update_nr_hw_queues+0x4c1/0x15f0 block/blk-mq.c:5220 nbd_start_device+0x1a6/0xbd0 drivers/block/nbd.c:1489 nbd_start_device_ioctl drivers/block/nbd.c:1548 [inline] __nbd_ioctl drivers/block/nbd.c:1623 [inline] nbd_ioctl+0x4a6/0xd30 drivers/block/nbd.c:1663 blkdev_ioctl+0x5ad/0x6f0 block/ioctl.c:804 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&q->q_usage_counter(io)#50){++++}-{0:0}: blk_alloc_queue+0x610/0x790 block/blk-core.c:461 blk_mq_alloc_queue+0x174/0x290 block/blk-mq.c:4429 __blk_mq_alloc_disk+0x29/0x120 block/blk-mq.c:4476 nbd_dev_add+0x492/0xb10 drivers/block/nbd.c:1954 nbd_init+0x291/0x2b0 drivers/block/nbd.c:2692 do_one_initcall+0x11d/0x760 init/main.c:1382 do_initcall_level init/main.c:1444 [inline] do_initcalls init/main.c:1460 [inline] do_basic_setup init/main.c:1479 [inline] kernel_init_freeable+0x6e5/0x7a0 init/main.c:1692 kernel_init+0x1f/0x1e0 init/main.c:1582 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #1 (fs_reclaim){+.+.}-{0:0}: __fs_reclaim_acquire mm/page_alloc.c:4348 [inline] fs_reclaim_acquire+0xc4/0x100 mm/page_alloc.c:4362 might_alloc include/linux/sched/mm.h:317 [inline] prepare_alloc_pages+0x166/0x5f0 mm/page_alloc.c:5018 __alloc_frozen_pages_noprof+0x19a/0x2ba0 mm/page_alloc.c:5239 __alloc_pages_noprof+0xb/0x1b0 mm/page_alloc.c:5284 __alloc_pages_node_noprof include/linux/gfp.h:289 [inline] alloc_pages_node_noprof include/linux/gfp.h:316 [inline] pcpu_alloc_pages mm/percpu-vm.c:95 [inline] pcpu_populate_chunk+0x118/0x990 mm/percpu-vm.c:285 pcpu_alloc_noprof+0x833/0x1c50 mm/percpu.c:1876 xt_percpu_counter_alloc+0x13e/0x1b0 net/netfilter/x_tables.c:1934 find_check_entry.isra.0+0xc2/0xa00 net/ipv6/netfilter/ip6_tables.c:545 translate_table+0xc31/0x16c0 net/ipv6/netfilter/ip6_tables.c:733 ip6t_register_table+0x106/0x430 net/ipv6/netfilter/ip6_tables.c:1751 ip6table_mangle_table_init+0x40/0x60 net/ipv6/netfilter/ip6table_mangle.c:85 xt_find_table_lock+0x2df/0x520 net/netfilter/x_tables.c:1260 xt_request_find_table_lock+0x28/0xf0 net/netfilter/x_tables.c:1285 get_info+0x1a7/0x770 net/ipv6/netfilter/ip6_tables.c:979 do_ip6t_get_ctl+0x168/0xac0 net/ipv6/netfilter/ip6_tables.c:1668 nf_getsockopt+0x7c/0xe0 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x207/0x2a0 net/ipv6/ipv6_sockglue.c:1473 tcp_getsockopt+0xa1/0x110 net/ipv4/tcp.c:4894 do_sock_getsockopt+0x259/0x3d0 net/socket.c:2383 __sys_getsockopt+0x148/0x260 net/socket.c:2412 __do_sys_getsockopt net/socket.c:2419 [inline] __se_sys_getsockopt net/socket.c:2416 [inline] __x64_sys_getsockopt+0xbd/0x160 net/socket.c:2416 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (pcpu_alloc_mutex){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 pcpu_alloc_noprof+0xedc/0x1c50 mm/percpu.c:1788 alloc_and_link_pwqs kernel/workqueue.c:5572 [inline] __alloc_workqueue+0x901/0x1880 kernel/workqueue.c:5833 alloc_workqueue_noprof+0xd2/0x200 kernel/workqueue.c:5883 sb_init_dio_done_wq+0x83/0x140 fs/super.c:2255 dio_set_defer_completion fs/direct-io.c:576 [inline] get_more_blocks fs/direct-io.c:655 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x3261/0x3ae0 fs/direct-io.c:1243 ocfs2_direct_IO+0x263/0x360 fs/ocfs2/aops.c:2440 generic_file_direct_write+0x198/0x410 mm/filemap.c:4253 __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4422 ocfs2_file_write_iter+0xdd9/0x2270 fs/ocfs2/file.c:2476 do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:829 vfs_writev+0x360/0xe10 fs/read_write.c:1059 do_pwritev+0x1ac/0x270 fs/read_write.c:1155 __do_sys_pwritev2 fs/read_write.c:1213 [inline] __se_sys_pwritev2 fs/read_write.c:1204 [inline] __x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1204 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: pcpu_alloc_mutex --> cpu_hotplug_lock --> wq_pool_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(wq_pool_mutex); lock(cpu_hotplug_lock); lock(wq_pool_mutex); lock(pcpu_alloc_mutex); *** DEADLOCK *** 3 locks held by syz.6.7514/29934: #0: ffff88807c760420 (sb_writers#20){.+.+}-{0:0}, at: do_pwritev+0x1ac/0x270 fs/read_write.c:1155 #1: ffff88807e599800 (&sb->s_type->i_mutex_key#31){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline] #1: ffff88807e599800 (&sb->s_type->i_mutex_key#31){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x1f94/0x2270 fs/ocfs2/file.c:2406 #2: ffffffff8e694fe8 (wq_pool_mutex){+.+.}-{4:4}, at: apply_wqattrs_lock kernel/workqueue.c:5278 [inline] #2: ffffffff8e694fe8 (wq_pool_mutex){+.+.}-{4:4}, at: __alloc_workqueue+0x858/0x1880 kernel/workqueue.c:5831 stack backtrace: CPU: 0 UID: 0 PID: 29934 Comm: syz.6.7514 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043 check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x1cf/0x380 kernel/locking/lockdep.c:5825 __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 pcpu_alloc_noprof+0xedc/0x1c50 mm/percpu.c:1788 alloc_and_link_pwqs kernel/workqueue.c:5572 [inline] __alloc_workqueue+0x901/0x1880 kernel/workqueue.c:5833 alloc_workqueue_noprof+0xd2/0x200 kernel/workqueue.c:5883 sb_init_dio_done_wq+0x83/0x140 fs/super.c:2255 dio_set_defer_completion fs/direct-io.c:576 [inline] get_more_blocks fs/direct-io.c:655 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x3261/0x3ae0 fs/direct-io.c:1243 ocfs2_direct_IO+0x263/0x360 fs/ocfs2/aops.c:2440 generic_file_direct_write+0x198/0x410 mm/filemap.c:4253 __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4422 ocfs2_file_write_iter+0xdd9/0x2270 fs/ocfs2/file.c:2476 do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:829 vfs_writev+0x360/0xe10 fs/read_write.c:1059 do_pwritev+0x1ac/0x270 fs/read_write.c:1155 __do_sys_pwritev2 fs/read_write.c:1213 [inline] __se_sys_pwritev2 fs/read_write.c:1204 [inline] __x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1204 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f907c39c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f907a5d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f907c616090 RCX: 00007f907c39c799 RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000005 RBP: 00007f907c432c99 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000007000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f907c616128 R14: 00007f907c616090 R15: 00007ffdd8244688 workqueue: Failed to create a rescuer kthread for wq "dio/loop6": -EINTR (syz.6.7514,29934,1):ocfs2_dio_end_io:2399 ERROR: Direct IO failed, bytes = -12