INFO: task syz.3.220:7809 blocked for more than 143 seconds.
Not tainted 6.11.0-rc1-syzkaller-00004-gdc1c8034e31b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.220 state:D stack:22264 pid:7809 tgid:7796 ppid:7481 flags:0x00004006
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
io_schedule+0x8d/0x110 kernel/sched/core.c:7401
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
folio_wait_writeback+0xe7/0x1e0 mm/page-writeback.c:3189
__filemap_fdatawait_range+0x181/0x410 mm/filemap.c:532
filemap_write_and_wait_range mm/filemap.c:694 [inline]
kiocb_write_and_wait+0x32e/0x400 mm/filemap.c:2711
generic_file_read_iter+0x14b/0x430 mm/filemap.c:2778
copy_splice_read+0x662/0xb60 fs/splice.c:365
do_splice_read fs/splice.c:984 [inline]
splice_direct_to_actor+0x502/0xc90 fs/splice.c:1089
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
do_sendfile+0x56d/0xe20 fs/read_write.c:1295
__do_sys_sendfile64 fs/read_write.c:1362 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1348
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: 0033:0x7f0dd4f77299
RSP: 002b:00007f0dd5d41048 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f0dd5105f80 RCX: 00007f0dd4f77299
RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000009
RBP: 00007f0dd4fe48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0dd5105f80 R15: 00007fff2d279398
INFO: task syz.3.220:7815 blocked for more than 144 seconds.
Not tainted 6.11.0-rc1-syzkaller-00004-gdc1c8034e31b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.220 state:D stack:22520 pid:7815 tgid:7796 ppid:7481 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
io_schedule+0x8d/0x110 kernel/sched/core.c:7401
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
folio_wait_writeback+0xe7/0x1e0 mm/page-writeback.c:3189
__filemap_fdatawait_range+0x181/0x410 mm/filemap.c:532
filemap_write_and_wait_range mm/filemap.c:694 [inline]
kiocb_invalidate_pages+0x2b6/0x3b0 mm/filemap.c:2727
generic_file_direct_write+0x9d/0x350 mm/filemap.c:3934
__generic_file_write_iter+0x129/0x230 mm/filemap.c:4107
generic_file_write_iter+0xaf/0x310 mm/filemap.c:4147
do_iter_readv_writev+0x60a/0x890
vfs_writev+0x37c/0xbb0 fs/read_write.c:971
do_pwritev fs/read_write.c:1072 [inline]
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2+0x1ca/0x2d0 fs/read_write.c:1122
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: 0033:0x7f0dd4f77299
RSP: 002b:00007f0dd5d20048 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f0dd5106058 RCX: 00007f0dd4f77299
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 000000000000000c
RBP: 00007f0dd4fe48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000007a00 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f0dd5106058 R15: 00007fff2d279398
INFO: task syz.3.220:7822 blocked for more than 145 seconds.
Not tainted 6.11.0-rc1-syzkaller-00004-gdc1c8034e31b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.220 state:D stack:23408 pid:7822 tgid:7796 ppid:7481 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
io_schedule+0x8d/0x110 kernel/sched/core.c:7401
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
folio_wait_writeback+0xe7/0x1e0 mm/page-writeback.c:3189
__filemap_fdatawait_range+0x181/0x410 mm/filemap.c:532
filemap_fdatawait_keep_errors+0x31/0xd0 mm/filemap.c:627
wait_sb_inodes fs/fs-writeback.c:2673 [inline]
sync_inodes_sb+0x8b2/0xb20 fs/fs-writeback.c:2795
sync_filesystem+0x176/0x230 fs/sync.c:64
nilfs_reconfigure+0xb2/0x410 fs/nilfs2/super.c:1119
reconfigure_super+0x445/0x880 fs/super.c:1083
do_remount fs/namespace.c:3012 [inline]
path_mount+0xc22/0xfa0 fs/namespace.c:3791
do_mount fs/namespace.c:3812 [inline]
__do_sys_mount fs/namespace.c:4020 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997
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: 0033:0x7f0dd4f7899a
RSP: 002b:00007f0dd5cfee78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0dd5cfef00 RCX: 00007f0dd4f7899a
RDX: 0000000020000180 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 0000000020000180 R08: 00007f0dd5cfef00 R09: 0000000001a4243c
R10: 0000000001a4243c R11: 0000000000000206 R12: 0000000020000100
R13: 00007f0dd5cfeec0 R14: 0000000000000000 R15: 0000000020007980
Showing all locks held in the system:
3 locks held by kworker/u8:0/11:
4 locks held by kworker/u8:1/12:
1 lock held by khungtaskd/30:
#0: ffffffff8e737660 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e737660 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e737660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6620
2 locks held by getty/4969:
#0: ffff88802f9010a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:5/5257:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900040d7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc900040d7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff888023afd240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
2 locks held by syz.3.220/7815:
#0: ffff88802c470420 (sb_writers#29){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#0: ffff88802c470420 (sb_writers#29){.+.+}-{0:0}, at: vfs_writev+0x2d4/0xbb0 fs/read_write.c:969
#1: ffff8880486e4260 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline]
#1: ffff8880486e4260 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: generic_file_write_iter+0x83/0x310 mm/filemap.c:4144
2 locks held by syz.3.220/7822:
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: do_remount fs/namespace.c:3009 [inline]
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: path_mount+0xbdb/0xfa0 fs/namespace.c:3791
#1: ffff88802c470938 (&s->s_sync_lock){+.+.}-{3:3}, at: wait_sb_inodes fs/fs-writeback.c:2612 [inline]
#1: ffff88802c470938 (&s->s_sync_lock){+.+.}-{3:3}, at: sync_inodes_sb+0x335/0xb20 fs/fs-writeback.c:2795
1 lock held by syz.3.287/8543:
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: super_lock+0x196/0x400 fs/super.c:120
2 locks held by syz.4.295/8645:
#0: ffff888063bc0420 (sb_writers#29){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#0: ffff888063bc0420 (sb_writers#29){.+.+}-{0:0}, at: vfs_writev+0x2d4/0xbb0 fs/read_write.c:969
#1: ffff8880487ac260 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline]
#1: ffff8880487ac260 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: generic_file_write_iter+0x83/0x310 mm/filemap.c:4144
2 locks held by syz.4.295/8700:
#0: ffff888063bc00e0 (&type->s_umount_key#91){++++}-{3:3}, at: do_remount fs/namespace.c:3009 [inline]
#0: ffff888063bc00e0 (&type->s_umount_key#91){++++}-{3:3}, at: path_mount+0xbdb/0xfa0 fs/namespace.c:3791
#1: ffff888063bc0938 (&s->s_sync_lock){+.+.}-{3:3}, at: wait_sb_inodes fs/fs-writeback.c:2612 [inline]
#1: ffff888063bc0938 (&s->s_sync_lock){+.+.}-{3:3}, at: sync_inodes_sb+0x335/0xb20 fs/fs-writeback.c:2795
2 locks held by syz.2.323/8954:
#0: ffff88806245a420 (sb_writers#29){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2876 [inline]
#0: ffff88806245a420 (sb_writers#29){.+.+}-{0:0}, at: vfs_writev+0x2d4/0xbb0 fs/read_write.c:969
#1: ffff88805fc082a0 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline]
#1: ffff88805fc082a0 (&sb->s_type->i_mutex_key#35){+.+.}-{3:3}, at: generic_file_write_iter+0x83/0x310 mm/filemap.c:4144
2 locks held by syz.2.323/8956:
#0: ffff88806245a0e0 (&type->s_umount_key#91){++++}-{3:3}, at: do_remount fs/namespace.c:3009 [inline]
#0: ffff88806245a0e0 (&type->s_umount_key#91){++++}-{3:3}, at: path_mount+0xbdb/0xfa0 fs/namespace.c:3791
#1: ffff88806245a938 (&s->s_sync_lock){+.+.}-{3:3}, at: wait_sb_inodes fs/fs-writeback.c:2612 [inline]
#1: ffff88806245a938 (&s->s_sync_lock){+.+.}-{3:3}, at: sync_inodes_sb+0x335/0xb20 fs/fs-writeback.c:2795
1 lock held by syz.4.336/9145:
#0: ffff888020701b60 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x900 drivers/block/loop.c:1252
1 lock held by syz.3.366/9312:
#0: ffff8880206ee360 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x900 drivers/block/loop.c:1252
1 lock held by syz.0.369/9372:
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.2.389/9571:
#0: ffff88806245a0e0 (&type->s_umount_key#91){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806245a0e0 (&type->s_umount_key#91){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.4.400/9650:
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88802c4700e0 (&type->s_umount_key#91){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
3 locks held by syz-executor/9825:
#0: ffffffff8fad2f50 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8fad2e08 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff8fad2e08 (genl_mutex){+.+.}-{3:3}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff8fad2e08 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x121/0xec0 net/netlink/genetlink.c:1209
#2: ffffffff8fa6d848 (rtnl_mutex){+.+.}-{3:3}, at: wiphy_register+0x1d26/0x2b30 net/wireless/core.c:965
1 lock held by syz.2.446/10033:
#0: ffff88806245a0e0 (&type->s_umount_key#91){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806245a0e0 (&type->s_umount_key#91){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.1.449/10051:
#0: ffffffff8e73ca38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#0: ffffffff8e73ca38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc1-syzkaller-00004-gdc1c8034e31b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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+0xfee/0x1030 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: 35 Comm: kworker/u8:2 Not tainted 6.11.0-rc1-syzkaller-00004-gdc1c8034e31b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:__sanitizer_cov_trace_switch+0x10a/0x120 kernel/kcov.c:342
Code: 48 c1 e3 05 48 8d 43 28 4c 39 f8 77 a3 49 ff c4 4c 89 21 4c 89 44 0b 08 4c 89 74 0b 10 48 89 7c 0b 18 4c 89 4c 0b 20 eb 87 5b <41> 5c 41 5e 41 5f c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90
RSP: 0018:ffffc90000ab6848 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88801aab5a00
RDX: 0000000000000008 RSI: ffffffff8e5a32a0 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000005 R09: ffffffff81410f0e
R10: 0000000000000008 R11: ffff88801aab5a00 R12: ffffffff906a8374
R13: dffffc0000000000 R14: 0000000000000009 R15: 1ffff92000156d28
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa5b99a028 CR3: 000000002489e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_next_frame+0x7be/0x2a00 arch/x86/kernel/unwind_orc.c:515
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
__kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
kvfree_call_rcu+0xfc/0x790 kernel/rcu/tree.c:3815
cfg80211_update_known_bss+0xb39/0x1500 net/wireless/scan.c:1891
__cfg80211_bss_update+0x153/0x2170 net/wireless/scan.c:1937
cfg80211_inform_single_bss_data+0xd51/0x2030 net/wireless/scan.c:2331
cfg80211_inform_bss_data+0x3dd/0x5a70 net/wireless/scan.c:3159
cfg80211_inform_bss_frame_data+0x3bc/0x720 net/wireless/scan.c:3249
ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1962/0x2d70 net/mac80211/ibss.c:1606
ieee80211_iface_process_skb net/mac80211/iface.c:1588 [inline]
ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1642
cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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