INFO: task syz-executor.4:5821 blocked for more than 143 seconds.
Not tainted 6.5.0-rc5-syzkaller-00053-g13b937206866 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24584 pid:5821 ppid:5060 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
do_remount fs/namespace.c:2879 [inline]
path_mount+0xbdd/0xfa0 fs/namespace.c:3654
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa57fa7e1ea
RSP: 002b:00007fa580856ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa580856f80 RCX: 00007fa57fa7e1ea
RDX: 0000000020000180 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 0000000020000180 R08: 00007fa580856f80 R09: 0000000001a404ac
R10: 0000000001a404ac R11: 0000000000000202 R12: 0000000020000100
R13: 00007fa580856f40 R14: 0000000000000000 R15: 0000000020003040
INFO: task syz-executor.5:5828 blocked for more than 143 seconds.
Not tainted 6.5.0-rc5-syzkaller-00053-g13b937206866 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24584 pid:5828 ppid:5057 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
jfs_flush_journal+0x733/0xec0 fs/jfs/jfs_logmgr.c:1564
jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:684
iterate_supers+0x12b/0x1e0 fs/super.c:744
ksys_sync+0xdb/0x1c0 fs/sync.c:104
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd5ca07cae9
RSP: 002b:00007fd5cae450c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fd5ca19bf80 RCX: 00007fd5ca07cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd5ca0c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd5ca19bf80 R15: 00007ffe325bd648
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d3294b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d329870 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d3292e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4772:
#0: ffff88802dcca098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
3 locks held by kworker/1:3/5105:
#0: ffff88814a725d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc9000548fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2:
ffffffff8e4bb3c8
(rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16b0 net/ipv6/addrconf.c:4093
3 locks held by kworker/0:12/5247:
#0: ffff88814a725d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc900059f7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffffffff8e4bb3c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16b0 net/ipv6/addrconf.c:4093
3 locks held by kworker/1:12/5290:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2572
#1: ffffc90005e57d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2574
#2: ffff88807d953240 (&data->fib_lock){+.+.}-{3:3}
, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
1 lock held by syz-executor.4/5821:
#0: ffff8880310600e0 (&type->s_umount_key#75){++++}-{3:3}, at: do_remount fs/namespace.c:2879 [inline]
#0: ffff8880310600e0 (&type->s_umount_key#75){++++}-{3:3}, at: path_mount+0xbdd/0xfa0 fs/namespace.c:3654
1 lock held by syz-executor.5/5828:
#0: ffff8880310600e0 (&type->s_umount_key#75){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:742
1 lock held by syz-executor.4/6148:
#0: ffff8880310600e0 (&type->s_umount_key#75){++++}-{3:3}, at: user_get_super+0x11e/0x250 fs/super.c:876
2 locks held by syz-executor.2/6443:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc5-syzkaller-00053-g13b937206866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5145 Comm: kworker/u4:7 Not tainted 6.5.0-rc5-syzkaller-00053-g13b937206866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0x4/0x110 lib/smp_processor_id.c:13
Code: ff 0f 1f 44 00 00 f3 0f 1e fa 48 c7 c7 20 ac 58 8b 48 c7 c6 60 ac 58 8b eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 <41> 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65
RSP: 0018:ffffc900055b7988 EFLAGS: 00000046
RAX: 0000000000000002 RBX: ffff8880275ac698 RCX: ffffffff816bdd8a
RDX: dffffc0000000000 RSI: ffffffff8b0aa8e0 RDI: ffffffff8b58ac80
RBP: ffffc900055b7a48 R08: ffffffff907b33df R09: 1ffffffff20f667b
R10: dffffc0000000000 R11: fffffbfff20f667c R12: ffff8880275ac6b8
R13: 0000000000000002 R14: ffff8880275ac640 R15: 1ffff11004eb58c8
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005626c10dc950 CR3: 000000000d130000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
lockdep_hardirqs_on_prepare+0x43c/0x7a0 kernel/locking/lockdep.c:4367
trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61
__local_bh_enable_ip+0x168/0x1f0 kernel/softirq.c:386
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_nc_purge_paths+0x309/0x3a0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x2d3/0x5c0 net/batman-adv/network-coding.c:720
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600
worker_thread+0xa63/0x1210 kernel/workqueue.c:2751
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304