INFO: task syz-executor.3:13069 blocked for more than 144 seconds.
Not tainted 5.15.147-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28096 pid:13069 ppid: 3547 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
sync_inodes_sb+0x293/0xab0 fs/fs-writeback.c:2770
iterate_supers+0x127/0x1e0 fs/super.c:705
ksys_sync+0xb9/0x1c0 fs/sync.c:102
__do_sys_sync+0xa/0x10 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f1f71316da9
RSP: 002b:00007f1f6f8980c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f1f71445f80 RCX: 00007f1f71316da9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f1f7136347a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1f71445f80 R15: 00007ffd807ca0d8
Showing all locks held in the system:
7 locks held by kworker/1:0/21:
#0: ffff888012aa5d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90000db7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffff88801e596220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88801e596220 (&dev->mutex){....}-{3:3}, at: hub_event+0x208/0x54c0 drivers/usb/core/hub.c:5751
#3: ffff888036236220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#3: ffff888036236220 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfa/0x8c0 drivers/usb/core/hub.c:2230
#4: ffff888064ceb1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#4: ffff888064ceb1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1044 [inline]
#4: ffff888064ceb1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xc2/0x7f0 drivers/base/dd.c:1259
#5: ffffffff8d4ff688 (input_mutex){+.+.}-{3:3}, at: __input_unregister_device+0x10c/0x320 drivers/input/input.c:2205
#6: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#6: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
1 lock held by khungtaskd/27:
#0: ffffffff8c91f220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by acpid/2948:
#0: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#0: ffffffff8c9237e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
2 locks held by getty/3260:
#0: ffff8880241c4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002bab2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
2 locks held by kworker/1:7/3610:
#0: ffff888011c72538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003b37d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by kworker/u4:12/11422:
#0: ffff888014fde938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90010adfd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by syz-executor.4/11500:
#0: ffff88803d44a650 (sb_internal#2){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x20f/0x1180 fs/xfs/libxfs/xfs_bmap.c:4573
#1: ffff888083f3a668 (&xfs_nondir_ilock_class){++++}-{3:3}, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
2 locks held by syz-executor.0/11502:
#0: ffff88803ebfc650 (sb_internal#2){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x20f/0x1180 fs/xfs/libxfs/xfs_bmap.c:4573
#1: ffff888083f3cbe8 (&xfs_nondir_ilock_class
){++++}-{3:3}
, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
2 locks held by syz-executor.3/13069:
#0: ffff88803d44a0e0 (&type->s_umount_key#52){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
#1: ffff88814769c7d8 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
#1: ffff88814769c7d8 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xab0 fs/fs-writeback.c:2768
2 locks held by kworker/u4:23/13749:
4 locks held by udevd/14283:
#0:
ffff8880785739e0
(&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xae/0xd10 fs/seq_file.c:182
#1: ffff88807b6a6c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x50/0x3b0 fs/kernfs/file.c:112
#2: ffff88801cd480f0 (kn->active#89){++++}-{0:0}, at: kernfs_seq_start+0x6f/0x3b0 fs/kernfs/file.c:113
#3: ffff888036236220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:765 [inline]
#3: ffff888036236220 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x22/0x90 drivers/usb/core/sysfs.c:141
5 locks held by kworker/0:15/15673:
1 lock held by syz-executor.4/16458:
#0: ffffffff8d9da3c8 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8d9da3c8 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x1b0 drivers/net/tun.c:3434
1 lock held by syz-executor.2/16468:
#0: ffffffff8d9da3c8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x460/0x2270 drivers/net/tun.c:3046
1 lock held by syz-executor.2/16471:
#0:
ffffffff8d9da3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: __tun_chr_ioctl+0x460/0x2270 drivers/net/tun.c:3046
2 locks held by syz-executor.0/16473:
#0: ffffffff8d9ce810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x37b/0x5d0 net/core/net_namespace.c:469
#1: ffffffff8d9da3c8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:799 [inline]
#1: ffffffff8d9da3c8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x176/0x3b0 net/smc/smc_pnet.c:868
1 lock held by syz-executor.3/16474:
#0: ffffffff8d9da3c8 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8d9da3c8 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x1b0 drivers/net/tun.c:3434
1 lock held by dhcpcd/16476:
#0: ffff88807e336120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1668 [inline]
#0: ffff88807e336120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd50 net/packet/af_packet.c:3164
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb 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:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11502 Comm: syz-executor.0 Not tainted 5.15.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:io_serial_in+0x72/0xb0 drivers/tty/serial/8250/8250_port.c:461
Code: 94 00 07 fd 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 25 b3 50 fd 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 89 e9 80 e1 07 38 c1 7c ad 48 89 ef
RSP: 0018:ffffc900010fdf30 EFLAGS: 00000002
RAX: 1ffffffff22de000 RBX: ffffffff916f0300 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff84792ca2 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffffffff22de0ad
R13: ffffffff916f02c0 R14: 00000000000003fd R15: dffffc0000000000
FS: 00007f9e304426c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a76e7bb600 CR3: 000000001bbda000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:116 [inline]
wait_for_xmitr+0xec/0x260 drivers/tty/serial/8250/8250_port.c:2089
serial8250_console_putchar+0x19/0x50 drivers/tty/serial/8250/8250_port.c:3321
uart_console_write+0xa9/0x100 drivers/tty/serial/serial_core.c:1971
serial8250_console_write+0xc8e/0x1180 drivers/tty/serial/8250/8250_port.c:3398
console_unlock+0xced/0x12b0 kernel/printk/printk.c:2738
vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2268
_printk+0xd1/0x111 kernel/printk/printk.c:2293
print_hex_dump+0x1a2/0x250 lib/hexdump.c:285
xfs_hex_dump+0x39/0x50 fs/xfs/xfs_message.c:118
xfs_buf_verifier_error+0x1bc/0x290 fs/xfs/xfs_error.c:418
xfs_agf_read_verify+0x1f8/0x2a0 fs/xfs/libxfs/xfs_alloc.c:2955
xfs_buf_ioend+0x26a/0x6e0 fs/xfs/xfs_buf.c:1263
__xfs_buf_submit+0x3af/0x770 fs/xfs/xfs_buf.c:1632
xfs_buf_submit fs/xfs/xfs_buf.c:58 [inline]
_xfs_buf_read fs/xfs/xfs_buf.c:722 [inline]
xfs_buf_read_map+0x41a/0xa00 fs/xfs/xfs_buf.c:786
xfs_trans_read_buf_map+0x25c/0xa60 fs/xfs/xfs_trans_buf.c:289
xfs_trans_read_buf fs/xfs/xfs_trans.h:210 [inline]
xfs_read_agf+0x263/0x510 fs/xfs/libxfs/xfs_alloc.c:3011
xfs_alloc_read_agf+0xce/0xbc0 fs/xfs/libxfs/xfs_alloc.c:3044
xfs_alloc_pagf_init+0xb6/0x140 fs/xfs/libxfs/xfs_alloc.c:2811
xfs_bmap_longest_free_extent+0x10f/0x200 fs/xfs/libxfs/xfs_bmap.c:3240
xfs_bmap_btalloc_nullfb+0x292/0x710 fs/xfs/libxfs/xfs_bmap.c:3309
xfs_bmap_btalloc+0xd8f/0x2bf0 fs/xfs/libxfs/xfs_bmap.c:3647
xfs_bmapi_allocate+0x4f4/0xe30
xfs_bmapi_convert_delalloc+0x84c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4636
xfs_convert_blocks fs/xfs/xfs_aops.c:245 [inline]
xfs_map_blocks+0xa9e/0x1520 fs/xfs/xfs_aops.c:366
iomap_writepage_map fs/iomap/buffered-io.c:1320 [inline]
iomap_do_writepage+0x63c/0x21c0 fs/iomap/buffered-io.c:1485
write_cache_pages+0xa97/0x1160 mm/page-writeback.c:2255
iomap_writepages+0x64/0x240 fs/iomap/buffered-io.c:1516
xfs_vm_writepages+0x127/0x180 fs/xfs/xfs_aops.c:488
do_writepages+0x481/0x730 mm/page-writeback.c:2364
filemap_fdatawrite_wbc+0x1d6/0x230 mm/filemap.c:400
__filemap_fdatawrite_range mm/filemap.c:433 [inline]
file_write_and_wait_range+0x1cb/0x2b0 mm/filemap.c:810
xfs_file_fsync+0x1bf/0xa20 fs/xfs/xfs_file.c:182
vfs_fsync_range fs/sync.c:188 [inline]
vfs_fsync fs/sync.c:202 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fdatasync fs/sync.c:225 [inline]
__se_sys_fdatasync fs/sync.c:223 [inline]
__x64_sys_fdatasync+0xb1/0x100 fs/sync.c:223
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9e31f02da9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9e304420c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007f9e32032120 RCX: 00007f9e31f02da9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f9e31f4f47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9e32032120 R15: 00007ffcbc0738a8