INFO: task syz.6.1865:15339 blocked for more than 144 seconds.
Not tainted 6.13.0-rc2-syzkaller-00031-gf92f4749861b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1865 state:D stack:24248 pid:15339 tgid:15338 ppid:14100 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
i_mmap_lock_read include/linux/fs.h:529 [inline]
rmap_walk_file+0x69c/0x780 mm/rmap.c:2694
remove_migration_ptes mm/migrate.c:373 [inline]
unmap_and_move_huge_page mm/migrate.c:1526 [inline]
migrate_hugetlbs mm/migrate.c:1648 [inline]
migrate_pages+0xd26/0x3380 mm/migrate.c:2046
migrate_to_node mm/mempolicy.c:1099 [inline]
do_migrate_pages+0x7fc/0xa80 mm/mempolicy.c:1198
kernel_migrate_pages mm/mempolicy.c:1713 [inline]
__do_sys_migrate_pages mm/mempolicy.c:1731 [inline]
__se_sys_migrate_pages+0x6c4/0x740 mm/mempolicy.c:1727
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: 0033:0x7facfbd7ff19
RSP: 002b:00007facfcb3f058 EFLAGS: 00000246 ORIG_RAX: 0000000000000100
RAX: ffffffffffffffda RBX: 00007facfbf45fa0 RCX: 00007facfbd7ff19
RDX: 00000000200002c0 RSI: 0000000000000003 RDI: 0000000000000000
RBP: 00007facfbdf3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000280 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007facfbf45fa0 R15: 00007ffe2aade838
INFO: task syz.6.1865:15362 blocked for more than 145 seconds.
Not tainted 6.13.0-rc2-syzkaller-00031-gf92f4749861b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1865 state:D stack:25688 pid:15362 tgid:15338 ppid:14100 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
folio_wait_bit_common+0x839/0xee0 mm/filemap.c:1308
__folio_lock mm/filemap.c:1646 [inline]
folio_lock include/linux/pagemap.h:1151 [inline]
__filemap_get_folio+0x14c/0x940 mm/filemap.c:1899
filemap_lock_folio include/linux/pagemap.h:788 [inline]
filemap_lock_hugetlb_folio include/linux/hugetlb.h:789 [inline]
hugetlbfs_zero_partial_page+0xb0/0x590 fs/hugetlbfs/inode.c:661
hugetlbfs_punch_hole fs/hugetlbfs/inode.c:715 [inline]
hugetlbfs_fallocate+0xbdd/0x11a0 fs/hugetlbfs/inode.c:748
vfs_fallocate+0x569/0x6e0 fs/open.c:327
madvise_remove mm/madvise.c:1020 [inline]
madvise_vma_behavior mm/madvise.c:1255 [inline]
madvise_walk_vmas mm/madvise.c:1497 [inline]
do_madvise+0x23c1/0x4d10 mm/madvise.c:1684
__do_sys_madvise mm/madvise.c:1700 [inline]
__se_sys_madvise mm/madvise.c:1698 [inline]
__x64_sys_madvise+0xa6/0xc0 mm/madvise.c:1698
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: 0033:0x7facfbd7ff19
RSP: 002b:00007facfcb1e058 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007facfbf46080 RCX: 00007facfbd7ff19
RDX: 0000000000000009 RSI: 0000000000600002 RDI: 0000000020000000
RBP: 00007facfbdf3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007facfbf46080 R15: 00007ffe2aade838
Showing all locks held in the system:
2 locks held by kworker/0:0/8:
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc900000d7d00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900000d7d00 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
1 lock held by khungtaskd/30:
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by kworker/u8:3/52:
2 locks held by getty/5576:
#0: ffff888035c020a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000330b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.6.1865/15339:
#0: ffff888022ec2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:529 [inline]
#0: ffff888022ec2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: rmap_walk_file+0x69c/0x780 mm/rmap.c:2694
3 locks held by syz.6.1865/15362:
#0: ffff888022ebc420 (sb_writers#18){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2964 [inline]
#0: ffff888022ebc420 (sb_writers#18){.+.+}-{0:0}, at: vfs_fallocate+0x4fe/0x6e0 fs/open.c:326
#1: ffff888022ec24b8 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
#1: ffff888022ec24b8 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:690 [inline]
#1: ffff888022ec24b8 (&sb->s_type->i_mutex_key#22){+.+.}-{4:4}, at: hugetlbfs_fallocate+0x407/0x11a0 fs/hugetlbfs/inode.c:748
#2: ffff888022ec2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:509 [inline]
#2: ffff888022ec2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:698 [inline]
#2: ffff888022ec2788 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0x4cd/0x11a0 fs/hugetlbfs/inode.c:748
3 locks held by syz-executor/15489:
#0: ffff88807c3d8d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
#0: ffff88807c3d8d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698
#1: ffff88807c3d8078 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x5c8/0x11c0 net/bluetooth/hci_sync.c:5200
#2: ffffffff8fdff968 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2047 [inline]
#2: ffffffff8fdff968 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2698
7 locks held by syz-executor/16211:
#0: ffff888035f3a420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2964 [inline]
#0: ffff888035f3a420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:675
#1: ffff888060d60888 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325
#2: ffff888142f27c38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326
#3: ffffffff8f54b168 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff888035b9a0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888035b9a0e8 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888035b9a0e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1293
#5: ffff888035b9f250 (&devlink->lock_key#10){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1675
#6: ffffffff8fc9f008 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:816
2 locks held by syz.4.2102/16599:
#0: ffff88806d1a8d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
#0: ffff88806d1a8d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698
#1: ffff88806d1a8078 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x5c8/0x11c0 net/bluetooth/hci_sync.c:5200
2 locks held by syz.5.2107/16620:
#0: ffffffff8fc9f008 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fc9f008 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
#1: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#1: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc2-syzkaller-00031-gf92f4749861b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
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: 5182 Comm: klogd Not tainted 6.13.0-rc2-syzkaller-00031-gf92f4749861b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x35/0x90 kernel/kcov.c:314
Code: 14 25 80 d4 03 00 65 8b 05 40 72 64 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 82 f8 15 00 00 <83> f8 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
RSP: 0018:ffffc900030d76d8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88807b373c00
RDX: ffff88807b373c00 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffc900030d77f0 R08: ffffffff8bbc4d4a R09: 0000000000000000
R10: ffffc900030d7760 R11: fffff5200061aeef R12: 0000000000000004
R13: 00000000ffff0a00 R14: 0000000000000004 R15: ffffc900030d7b84
FS: 00007f60ea7ad380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc135c1108 CR3: 000000007ad2e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
number+0x4ea/0xf90 lib/vsprintf.c:520
vsnprintf+0x1542/0x1da0 lib/vsprintf.c:2914
sprintf+0xda/0x120 lib/vsprintf.c:3052
print_time kernel/printk/printk.c:1381 [inline]
info_print_prefix+0x16b/0x310 kernel/printk/printk.c:1407
record_print_text kernel/printk/printk.c:1456 [inline]
syslog_print+0x4b7/0x9c0 kernel/printk/printk.c:1667
do_syslog+0x3c2/0x820 kernel/printk/printk.c:1785
__do_sys_syslog kernel/printk/printk.c:1877 [inline]
__se_sys_syslog kernel/printk/printk.c:1875 [inline]
__x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1875
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: 0033:0x7f60ea90efa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdc03d6c88 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f60eaaad4a0 RCX: 00007f60ea90efa7
RDX: 00000000000003ff RSI: 00007f60eaaad4a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 16c279ad32c23cce
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f60eaaad4a0
R13: 00007f60eaa9d212 R14: 00007f60eaaad550 R15: 00007f60eaaad550