INFO: task syz.2.19:6046 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.19 state:D stack:24712 pid:6046 tgid:6045 ppid:6026 task_flags:0x400140 flags:0x00080003 Call Trace: context_switch kernel/sched/core.c:5254 [inline] __schedule+0x17c4/0x4d60 kernel/sched/core.c:6862 __schedule_loop kernel/sched/core.c:6944 [inline] schedule+0x165/0x360 kernel/sched/core.c:6959 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7016 rwsem_down_read_slowpath+0x5fd/0x8f0 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read_nested+0x9a/0x2f0 kernel/locking/rwsem.c:1663 dbAlloc+0x3a7/0xba0 fs/jfs/jfs_dmap.c:790 diNewExt+0x9af/0x3150 fs/jfs/jfs_imap.c:2261 diAllocExt fs/jfs/jfs_imap.c:1952 [inline] diAllocAG+0xe86/0x1df0 fs/jfs/jfs_imap.c:1669 diAlloc+0x1d5/0x1680 fs/jfs/jfs_imap.c:1590 ialloc+0x8c/0x8f0 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x193/0xa70 fs/jfs/namei.c:225 vfs_mkdir+0x306/0x510 fs/namei.c:4453 do_mkdirat+0x247/0x590 fs/namei.c:4486 __do_sys_mkdirat fs/namei.c:4503 [inline] __se_sys_mkdirat fs/namei.c:4501 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4501 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ff2f8efc9 RSP: 002b:00007f8ff3dc3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f8ff31e5fa0 RCX: 00007f8ff2f8efc9 RDX: 0000000000000408 RSI: 0000200000000300 RDI: 0000000000000004 RBP: 00007f8ff3011f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8ff31e6038 R14: 00007f8ff31e5fa0 R15: 00007ffd332f94b8 Showing all locks held in the system: 3 locks held by kworker/u8:0/12: #0: ffff8880b863a018 ( &rq->__lock ){-.-.}-{2:2} , at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:638 #1: ffffc90000117ba0 ( (work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0} , at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933 #2: ffff8880b8725958 (&base->lock){-.-.}-{2:2}, at: lock_timer_base kernel/time/timer.c:1004 [inline] #2: ffff8880b8725958 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x1ae/0xf30 kernel/time/timer.c:1085 1 lock held by khungtaskd/31: #0: ffffffff8df3d6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8df3d6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #0: ffffffff8df3d6e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775 3 locks held by kworker/u8:7/1151: #0: ffff88813fe29948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3238 [inline] #0: ffff88813fe29948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3346 #1: ffffc90003c9fba0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline] ffffc90003c9fba0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3346 #2: ffffffff8f2d1f08 (rtnl_mutex ){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:303 2 locks held by getty/5593: #0: ffff888033f080a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900036be2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222 1 lock held by syz.0.17/5990: 1 lock held by syz.1.18/6021: 5 locks held by syz.2.19/6046: #0: ffff888029b20420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff88805b4ea0f0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline] #1: ffff88805b4ea0f0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_create+0x1f8/0x3c0 fs/namei.c:4226 #2: ffff888029c90920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b5/0x1680 fs/jfs/jfs_imap.c:-1 #3: ffff88805b4e9388 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2617 [inline] #3: ffff88805b4e9388 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline] #3: ffff88805b4e9388 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocAG+0x7ad/0x1df0 fs/jfs/jfs_imap.c:1669 #4: ffff88805b4e8a60 (&jfs_ip->rdwrlock#2/2){++++}-{4:4}, at: dbAlloc+0x3a7/0xba0 fs/jfs/jfs_dmap.c:790 2 locks held by syz.2.19/6047: 5 locks held by syz.3.20/6071: #0: ffff88807a21e420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff888076ae2a18 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline] #1: ffff888076ae2a18 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_create+0x1f8/0x3c0 fs/namei.c:4226 #2: ffff888028b58920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b5/0x1680 fs/jfs/jfs_imap.c:-1 #3: ffff888076ae1cb0 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2617 [inline] #3: ffff888076ae1cb0 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline] #3: ffff888076ae1cb0 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocAG+0x7ad/0x1df0 fs/jfs/jfs_imap.c:1669 #4: ffff888076ae1388 (&jfs_ip->rdwrlock#2/2){++++}-{4:4}, at: dbAlloc+0x3a7/0xba0 fs/jfs/jfs_dmap.c:790 2 locks held by syz.3.20/6072: 5 locks held by syz.4.21/6109: #0: ffff88807bbf8420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff888076ae6108 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline] #1: ffff888076ae6108 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_create+0x1f8/0x3c0 fs/namei.c:4226 #2: ffff888072ed0920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b5/0x1680 fs/jfs/jfs_imap.c:-1 #3: ffff888076ae53a0 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2617 [inline] #3: ffff888076ae53a0 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline] #3: ffff888076ae53a0 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocAG+0x7ad/0x1df0 fs/jfs/jfs_imap.c:1669 #4: ffff888076ae4a78 ( &jfs_ip->rdwrlock #2/2){++++}-{4:4}, at: dbAlloc+0x3a7/0xba0 fs/jfs/jfs_dmap.c:790 2 locks held by syz.4.21/6110: 5 locks held by syz.5.22/6141: #0: ffff888029744420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff888076bca0f0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline] #1: ffff888076bca0f0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_create+0x1f8/0x3c0 fs/namei.c:4226 #2: ffff88805b890920 ( &(imap->im_aglock[index]) ){+.+.}-{4:4} , at: diAlloc+0x1b5/0x1680 fs/jfs/jfs_imap.c:-1 #3: ffff888076bc9388 ( &jfs_ip->rdwrlock /1 ){++++}-{4:4} , at: diNewIAG fs/jfs/jfs_imap.c:2617 [inline] , at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline] , at: diAllocAG+0x7ad/0x1df0 fs/jfs/jfs_imap.c:1669 #4: ffff888076bc8a60 (&jfs_ip->rdwrlock#2/2){++++}-{4:4}, at: dbAlloc+0x3a7/0xba0 fs/jfs/jfs_dmap.c:790 2 locks held by syz.5.22/6142: 5 locks held by syz.6.23/6175: #0: ffff888079eee420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff888076bcd7e0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline] #1: ffff888076bcd7e0 (&type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_create+0x1f8/0x3c0 fs/namei.c:4226 #2: ffff888032ef0920 ( &(imap->im_aglock[index]) ){+.+.}-{4:4} , at: diAlloc+0x1b5/0x1680 fs/jfs/jfs_imap.c:-1 #3: ffff888076bcca78 ( &jfs_ip->rdwrlock /1 ){++++}-{4:4} , at: diNewIAG fs/jfs/jfs_imap.c:2617 [inline] , at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline] , at: diAllocAG+0x7ad/0x1df0 fs/jfs/jfs_imap.c:1669 #4: ffff888076bcc150 ( &jfs_ip->rdwrlock #2 /2){++++}-{4:4}, at: dbAlloc+0x3a7/0xba0 fs/jfs/jfs_dmap.c:790 7 locks held by syz.6.23/6176: 5 locks held by syz.7.24/6216: #0: ffff888053ea0420 ( sb_writers #12 ){.+.+}-{0:0} , at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff8880655e97c8 ( &type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1025 [inline] &type->i_mutex_dir_key#8/1){+.+.}-{4:4}, at: filename_create+0x1f8/0x3c0 fs/namei.c:4226 #2: ffff888052650920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b5/0x1680 fs/jfs/jfs_imap.c:-1 #3: ffff8880655e8a60 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2617 [inline] #3: ffff8880655e8a60 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline] #3: ffff8880655e8a60 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocAG+0x7ad/0x1df0 fs/jfs/jfs_imap.c:1669 #4: ffff8880655e8138 (&jfs_ip->rdwrlock#2/2){++++}-{4:4}, at: dbAlloc+0x3a7/0xba0 fs/jfs/jfs_dmap.c:790 2 locks held by syz.7.24/6217: