INFO: task syz.2.1059:11090 blocked for more than 143 seconds.
Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1059 state:D stack:28160 pid:11090 tgid:11086 ppid:10028 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x124/0x330 kernel/locking/rwsem.c:1528
filemap_invalidate_lock_shared include/linux/fs.h:846 [inline]
filemap_fault+0x5c2/0x2610 mm/filemap.c:3320
__do_fault+0x10a/0x490 mm/memory.c:4556
do_read_fault mm/memory.c:4921 [inline]
do_fault mm/memory.c:5051 [inline]
do_pte_missing mm/memory.c:3897 [inline]
handle_pte_fault mm/memory.c:5381 [inline]
__handle_mm_fault+0x3a1e/0x5430 mm/memory.c:5524
handle_mm_fault+0x476/0xa00 mm/memory.c:5689
do_user_addr_fault+0x2e5/0xe50 arch/x86/mm/fault.c:1389
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline]
RIP: 0010:strncpy_from_user+0x164/0x300 lib/strncpy_from_user.c:139
Code: 00 48 83 ed 08 4d 89 64 1d 00 bf 07 00 00 00 48 83 c3 08 48 89 ee e8 fb dc da fc 48 83 fd 07 0f 86 ca 00 00 00 e8 bc e1 da fc <4d> 8b 24 1e e8 b3 e1 da fc 48 b8 ff fe fe fe fe fe fe fe 4c 89 e2
RSP: 0018:ffffc9000345fd28 EFLAGS: 00050287
RAX: 00000000000003aa RBX: 0000000000000000 RCX: ffffc9001536e000
RDX: 0000000000040000 RSI: ffffffff84b30254 RDI: 0000000000000007
RBP: 0000000000000fe0 R08: 0000000000000007 R09: 0000000000000007
R10: 0000000000000fe0 R11: 0000000000000000 R12: 0000000020001260
R13: ffff88802e204420 R14: 0000000020000280 R15: 0000000000000fe0
getname_flags.part.0+0x93/0x4f0 fs/namei.c:150
getname_flags include/linux/audit.h:322 [inline]
getname+0x8f/0xe0 fs/namei.c:218
do_sys_openat2+0x104/0x1e0 fs/open.c:1407
do_sys_open fs/open.c:1428 [inline]
__do_sys_creat fs/open.c:1504 [inline]
__se_sys_creat fs/open.c:1498 [inline]
__x64_sys_creat+0xcd/0x120 fs/open.c:1498
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5d13775bd9
RSP: 002b:00007f5d14541048 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f5d13903f60 RCX: 00007f5d13775bd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007f5d137e4aa1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5d13903f60 R15: 00007ffc2bb7f2d8
Showing all locks held in the system:
3 locks held by kworker/0:0/8:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223
#1: ffffc900000d7d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224
#2: ffffffff8f7489a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
1 lock held by khungtaskd/30:
#0: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8dbb1620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
6 locks held by kworker/u8:7/1098:
#0: ffff8880162d3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3223
#1: ffffc90004717d80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3224
#2: ffffffff8f733710 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:594
#3: ffff888062ecd0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff888062ecd0e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff888062ecd0e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x12d/0x2b0 net/devlink/core.c:506
#4: ffff888062ec8250 (&devlink->lock_key#73){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff888062ec8250 (&devlink->lock_key#73){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff888062ec8250 (&devlink->lock_key#73){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x137/0x2b0 net/devlink/core.c:506
#5: ffffffff8dbbcc80 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6c0 kernel/rcu/tree.c:4448
2 locks held by getty/4838:
#0: ffff88802acda0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
6 locks held by kworker/u8:9/5721:
3 locks held by kworker/u8:11/10313:
1 lock held by syz.0.926/10371:
2 locks held by syz.2.1059/11090:
#0: ffff88801c7a9e18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline]
#0: ffff88801c7a9e18 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5716 [inline]
#0: ffff88801c7a9e18 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x35/0x6a0 mm/memory.c:5776
#1: ffff88801d94f0c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:846 [inline]
#1: ffff88801d94f0c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0x5c2/0x2610 mm/filemap.c:3320
1 lock held by syz-executor/11382:
#0: ffffffff8f7489a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f7489a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6632
1 lock held by syz-executor/11455:
#0: ffffffff8dbbcdb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
2 locks held by syz-executor/11487:
#0: ffffffff8f7489a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f7489a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6632
#1: ffffffff8dbbcdb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:291
1 lock held by syz-executor/11508:
#0: ffffffff8f7489a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f7489a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6632
1 lock held by sed/11560:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf86/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5721 Comm: kworker/u8:9 Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:__rcu_read_unlock+0x94/0x580 kernel/rcu/tree_plugin.h:425
Code: ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 eb 01 83 c0 03 38 d0 7c 08 84 d2 0f 85 eb 01 00 00 85 db 41 89 9c 24 44 04 00 00 75 3b <48> 8d bd 48 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90002e7fb30 EFLAGS: 00000246
RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffc90002e7fae8
RDX: 0000000000000000 RSI: ffffffff8b2cb200 RDI: ffff88806193a244
RBP: ffff888061939e00 R08: 0000000000000000 R09: fffffbfff1fc8822
R10: ffffffff8fe44117 R11: 0000000000000003 R12: ffff888061939e00
R13: ffff88802b90cca0 R14: 0000000000000223 R15: ffff88802469db40
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f68604bf270 CR3: 000000000d97a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:814 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:771 [inline]
batadv_iv_ogm_schedule_buff+0x766/0x1500 net/batman-adv/bat_iv_ogm.c:825
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244