INFO: task kworker/u4:12:5743 blocked for more than 143 seconds.
Not tainted 5.15.178-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:12 state:D stack:20192 pid: 5743 ppid: 2 flags:0x00004000
Workqueue: btrfs-endio-write btrfs_work_helper
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
wait_on_state fs/btrfs/extent_io.c:868 [inline]
wait_extent_bit+0x3f9/0x530 fs/btrfs/extent_io.c:906
lock_extent_bits+0x10d/0x1e0 fs/btrfs/extent_io.c:1469
btrfs_finish_ordered_io+0x615/0x1db0 fs/btrfs/inode.c:3108
btrfs_work_helper+0x36e/0xbc0 fs/btrfs/async-thread.c:325
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
INFO: task syz.3.289:6262 blocked for more than 143 seconds.
Not tainted 5.15.178-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.289 state:D stack:20704 pid: 6262 ppid: 5775 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
io_schedule+0x88/0x100 kernel/sched/core.c:8481
wait_on_page_bit_common+0xa13/0x1180 mm/filemap.c:1356
lock_page include/linux/pagemap.h:625 [inline]
btrfs_page_mkwrite+0x537/0xd60 fs/btrfs/inode.c:8953
do_page_mkwrite+0x1a9/0x440 mm/memory.c:2920
wp_page_shared+0x179/0x690 mm/memory.c:3257
handle_pte_fault mm/memory.c:4666 [inline]
__handle_mm_fault mm/memory.c:4783 [inline]
handle_mm_fault+0x2a3d/0x5960 mm/memory.c:4881
do_user_addr_fault arch/x86/mm/fault.c:1357 [inline]
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x271/0x700 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7f20490aab58
RSP: 002b:00007ffe05931868 EFLAGS: 00010246
RAX: 0000400000000040 RBX: 0000000000000004 RCX: 0031656c69662f2e
RDX: 0000000000000008 RSI: 0031656c69662f2e RDI: 0000400000000040
RBP: 00007f20492fdba0 R08: 00007f2048f56000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000009 R12: 00007f20492fbfac
R13: 00007ffe05931960 R14: fffffffffffffffe R15: 00007ffe05931980
INFO: task syz.3.289:6263 blocked for more than 144 seconds.
Not tainted 5.15.178-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.289 state:D stack:21472 pid: 6263 ppid: 5775 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
wait_on_state fs/btrfs/extent_io.c:868 [inline]
wait_extent_bit+0x3f9/0x530 fs/btrfs/extent_io.c:906
lock_extent_bits+0x10d/0x1e0 fs/btrfs/extent_io.c:1469
btrfs_page_mkwrite+0x5f2/0xd60 fs/btrfs/inode.c:8963
do_page_mkwrite+0x1a9/0x440 mm/memory.c:2920
wp_page_shared+0x179/0x690 mm/memory.c:3257
handle_pte_fault mm/memory.c:4666 [inline]
__handle_mm_fault mm/memory.c:4783 [inline]
handle_mm_fault+0x2a3d/0x5960 mm/memory.c:4881
do_user_addr_fault arch/x86/mm/fault.c:1357 [inline]
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x271/0x700 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:92
Code: 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a
RSP: 0018:ffffc900031ff668 EFLAGS: 00050202
RAX: ffffffff8413e601 RBX: 00004000000002d8 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffc900031ff720 RDI: 00004000000002a0
RBP: ffffc900031ff7d0 R08: 0000000000000000 R09: fffff5200063feeb
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000038
R13: 00007ffffffff000 R14: ffffc900031ff720 R15: 00004000000002a0
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
_copy_to_user+0xef/0x130 lib/usercopy.c:40
copy_to_user include/linux/uaccess.h:200 [inline]
fiemap_fill_next_extent+0x231/0x410 fs/ioctl.c:144
emit_fiemap_extent fs/btrfs/extent_io.c:5448 [inline]
extent_fiemap+0x1185/0x1650 fs/btrfs/extent_io.c:5687
btrfs_fiemap+0x121/0x160 fs/btrfs/inode.c:8586
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x1934/0x2b70 fs/ioctl.c:814
__do_sys_ioctl fs/ioctl.c:872 [inline]
__se_sys_ioctl+0x81/0x160 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f20490e2de9
RSP: 002b:00007f2046f4c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f20492fbfa0 RCX: 00007f20490e2de9
RDX: 0000400000000280 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f20491642a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f20492fbfa0 R15: 00007ffe05931708
Showing all locks held in the system:
2 locks held by kworker/u4:0/9:
#0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90000ce7d20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
3 locks held by kworker/0:1/13:
#0: ffff88802b972538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffff8880b8e27848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x53d/0x810 kernel/sched/psi.c:891
#2: ffff8880b8e3a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
1 lock held by khungtaskd/27:
#0: ffffffff8cb1fce0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:2/154:
2 locks held by kworker/u4:4/1520:
#0: ffff88801b9e2938 ((wq_completion)btrfs-flush_delalloc){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90006cc7d20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by getty/3923:
#0: ffff88814c458098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900025c62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/0:3/4157:
#0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000311fd20 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffff88801f3c7400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x56/0xab0 drivers/net/netdevsim/dev.c:757
8 locks held by kworker/u4:5/4227:
#0: ffff8880175cd938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000317fd20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8dc36b10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x166/0xc90 net/core/net_namespace.c:572
#3: ffffffff8dc67f08 (devlink_mutex){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0xb1/0x350 net/core/devlink.c:11534
#4: ffff88807a096658 (&nsim_bus_dev->nsim_bus_reload_lock){+.+.}-{3:3}, at: nsim_dev_reload_down+0x58/0x160 drivers/net/netdevsim/dev.c:870
#5: ffff88801f3c7400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1359 [inline]
#5: ffff88801f3c7400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_reload_destroy+0x118/0x240 drivers/net/netdevsim/dev.c:1561
#6: ffffffff8dc42788 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x3a/0x140 drivers/net/netdevsim/netdev.c:381
#7: ffffffff8cb242a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#7: ffffffff8cb242a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
2 locks held by kworker/u4:9/4295:
#0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc900031cfd20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
3 locks held by kworker/1:15/4902:
3 locks held by kworker/1:16/4903:
#0: ffff88802b972538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc900034d7d20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8dc42788 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcc/0x1720 net/ipv6/addrconf.c:4113
2 locks held by kworker/u4:12/5743:
#0: ffff88807a9ef938 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000304fd20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
3 locks held by syz.3.289/6262:
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1298 [inline]
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1445 [inline]
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x181/0x700 arch/x86/mm/fault.c:1501
#1: ffff88807da44558 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x1a9/0x440 mm/memory.c:2920
#2: ffff88805d603f78 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x4a2/0xd60 fs/btrfs/inode.c:8952
3 locks held by syz.3.289/6263:
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1298 [inline]
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1445 [inline]
#0: ffff88807e393228 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x181/0x700 arch/x86/mm/fault.c:1501
#1: ffff88807da44558 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x1a9/0x440 mm/memory.c:2920
#2: ffff88805d603f78 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x4a2/0xd60 fs/btrfs/inode.c:8952
3 locks held by syz.1.598/9048:
#0: ffff88807da440e0 (&type->s_umount_key#79){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:716
#1: ffff88806688c9f8 (&fs_info->ordered_operations_mutex){+.+.}-{3:3}, at: btrfs_wait_ordered_roots+0x100/0x950 fs/btrfs/ordered-data.c:690
#2: ffff8880725ac848 (&root->ordered_extent_mutex){+.+.}-{3:3}, at: btrfs_wait_ordered_extents+0x1ef/0xe20 fs/btrfs/ordered-data.c:636
2 locks held by syz-executor/9199:
#0: ffffffff8dca0290 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8dc42788 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x28/0x540 net/wireless/nl80211.c:14964
1 lock held by syz-executor/9296:
#0: ffffffff8dc42788 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8dc42788 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 net/core/rtnetlink.c:5644
1 lock held by syz-executor/9303:
#0: ffffffff8dc42788 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8dc42788 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x94c/0xee0 net/core/rtnetlink.c:5644
1 lock held by dhcpcd/9590:
#0: ffff888057dcf410 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
#0: ffff888057dcf410 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:648 [inline]
#0: ffff888057dcf410 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x98/0x230 net/socket.c:1336
2 locks held by dhcpcd/9591:
#0: ffff88805d538210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
#0: ffff88805d538210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:648 [inline]
#0: ffff88805d538210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x98/0x230 net/socket.c:1336
#1: ffffffff8cb242a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#1: ffffffff8cb242a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lock_release+0x618/0x9a0 kernel/locking/lockdep.c:5646
Code: c7 84 24 90 00 00 00 00 00 00 00 9c 8f 84 24 90 00 00 00 42 80 3c 3b 00 74 08 4c 89 f7 e8 a0 74 67 00 f6 84 24 91 00 00 00 02 <75> 6f 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 4b
RSP: 0018:ffffc90000ce7a40 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff9200019cf5a RCX: ffffc90000ce7a03
RDX: 0000000000000002 RSI: ffffffff8aab3e20 RDI: ffffffff8af9f2c0
RBP: ffffc90000ce7b80 R08: dffffc0000000000 R09: fffffbfff1c150ee
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200019cf54
R13: 0000000000000246 R14: ffffc90000ce7ad0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe2c56e378 CR3: 00000000730d9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
batadv_nc_process_nc_paths+0x2c2/0x350 net/batman-adv/network-coding.c:703
batadv_nc_worker+0x3d4/0x5b0 net/batman-adv/network-coding.c:732
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287