INFO: task syz.4.95:6221 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.95 state:D stack:25520 pid:6221 tgid:6220 ppid:5623 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:835 [inline]
lock_two_directories+0x16f/0x220 fs/namei.c:3118
lock_rename fs/namei.c:3152 [inline]
do_renameat2+0x5da/0x13f0 fs/namei.c:5058
__do_sys_rename fs/namei.c:5170 [inline]
__se_sys_rename fs/namei.c:5168 [inline]
__x64_sys_rename+0x82/0x90 fs/namei.c:5168
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e1917def9
RSP: 002b:00007f6e1a03f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f6e19335f80 RCX: 00007f6e1917def9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000020000040
RBP: 00007f6e191f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6e19335f80 R15: 00007ffc6dc88aa8
INFO: task syz.4.95:6231 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.95 state:D stack:26816 pid:6231 tgid:6220 ppid:5623 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:835 [inline]
filename_create+0x260/0x540 fs/namei.c:3979
do_mkdirat+0xbd/0x3a0 fs/namei.c:4225
__do_sys_mkdir fs/namei.c:4253 [inline]
__se_sys_mkdir fs/namei.c:4251 [inline]
__x64_sys_mkdir+0x6c/0x80 fs/namei.c:4251
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e1917def9
RSP: 002b:00007f6e1a01e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f6e19336058 RCX: 00007f6e1917def9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f6e191f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6e19336058 R15: 00007ffc6dc88aa8
INFO: task syz.4.95:6235 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.95 state:D stack:26816 pid:6235 tgid:6220 ppid:5623 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:835 [inline]
filename_create+0x260/0x540 fs/namei.c:3979
do_mkdirat+0xbd/0x3a0 fs/namei.c:4225
__do_sys_mkdir fs/namei.c:4253 [inline]
__se_sys_mkdir fs/namei.c:4251 [inline]
__x64_sys_mkdir+0x6c/0x80 fs/namei.c:4251
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e1917def9
RSP: 002b:00007f6e19ffd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f6e19336130 RCX: 00007f6e1917def9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f6e191f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6e19336130 R15: 00007ffc6dc88aa8
Showing all locks held in the system:
5 locks held by kworker/u8:1/12:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by kworker/u8:6/1108:
#0: ffff8880b893e998 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#1: ffffc90004287d00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90004287d00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
3 locks held by kworker/u8:7/2474:
#0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90009467d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90009467d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
1 lock held by dhcpcd/4891:
#0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1101
2 locks held by getty/4980:
#0: ffff88802fab80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
4 locks held by syz.4.95/6221:
#0: ffff8880454dc420 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff8880454dc730 (&type->s_vfs_rename_key#4){+.+.}-{3:3}, at: lock_rename fs/namei.c:3151 [inline]
#1: ffff8880454dc730 (&type->s_vfs_rename_key#4){+.+.}-{3:3}, at: do_renameat2+0x5cf/0x13f0 fs/namei.c:5058
#2: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#2: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/1){+.+.}-{3:3}, at: lock_two_directories+0x145/0x220 fs/namei.c:3117
#3: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/5){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#3: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/5){+.+.}-{3:3}, at: lock_two_directories+0x16f/0x220 fs/namei.c:3118
2 locks held by syz.4.95/6231:
#0: ffff8880454dc420 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#1: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3979
2 locks held by syz.4.95/6235:
#0: ffff8880454dc420 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#1: ffff88805d190fb0 (&sb->s_type->i_mutex_key#31/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3979
2 locks held by syz-executor/8174:
1 lock held by syz-executor/8542:
#0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8174 Comm: syz-executor Not tainted 6.11.0-rc7-syzkaller-00021-g7c6a3a65ace7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:in_lock_functions+0x0/0x30 kernel/locking/spinlock.c:408
Code: c1 0f 8c 73 ff ff ff 48 c7 c7 c0 6d fe 95 e8 07 93 86 00 e9 62 ff ff ff 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 c7 c0 f0 1e bb 8b 48 39 c7 0f 93 c0 48 c7 c1 da 58
RSP: 0018:ffffc900096c7838 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8bbb5801
RDX: 0000000000000000 RSI: ffffffff8c3fbae0 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8253ac2b R09: 1ffffffff1fee935
R10: dffffc0000000000 R11: fffffbfff1fee936 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000555577277500(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faf8ac2d9a0 CR3: 0000000045b84000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
get_lock_parent_ip include/linux/ftrace.h:979 [inline]
preempt_latency_start kernel/sched/core.c:5634 [inline]
preempt_count_add+0xa1/0x190 kernel/sched/core.c:5659
__raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
_raw_read_lock+0x12/0x50 kernel/locking/spinlock.c:228
ext4_es_lookup_extent+0x169/0xa90 fs/ext4/extents_status.c:999
ext4_map_blocks+0x1f2/0x1d20 fs/ext4/inode.c:536
ext4_readdir+0xa1d/0x3500 fs/ext4/dir.c:181
iterate_dir+0x57a/0x810 fs/readdir.c:108
__do_sys_getdents64 fs/readdir.c:407 [inline]
__se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:392
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8a127b0093
Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 52 43 f8 ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8
RSP: 002b:00007ffed7554308 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 000055557729a640 RCX: 00007f8a127b0093
RDX: 0000000000008000 RSI: 000055557729a640 RDI: 0000000000000006
RBP: 000055557729a614 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8
R13: 0000000000000016 R14: 000055557729a610 R15: 00007ffed75576a0