INFO: task syz-executor.0:8807 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27200 pid: 8807 ppid: 7068 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
xfs_buf_iowait+0x8e/0x420 fs/xfs/xfs_buf.c:1573
__xfs_buf_submit+0x35b/0x630 fs/xfs/xfs_buf.c:1638
xfs_buf_submit fs/xfs/xfs_buf.c:58 [inline]
xfs_buf_read_uncached+0x1bd/0x320 fs/xfs/xfs_buf.c:885
xfs_readsb+0x2a9/0x550 fs/xfs/xfs_mount.c:178
xfs_fs_fill_super+0x629/0x1990 fs/xfs/xfs_super.c:1481
get_tree_bdev+0x398/0x680 fs/super.c:1295
vfs_get_tree+0x7f/0x2c0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x7e8/0x1a40 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f99a85e2188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00000000200000c0
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008002 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fff0afa799f R14: 00007f99a85e2300 R15: 0000000000022000
INFO: task syz-executor.0:8897 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29624 pid: 8897 ppid: 7068 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
blk_mq_freeze_queue_wait+0xec/0x120 block/blk-mq.c:178
nbd_add_socket+0x152/0x7e0 drivers/block/nbd.c:1109
__nbd_ioctl drivers/block/nbd.c:1454 [inline]
nbd_ioctl+0x3aa/0x8f0 drivers/block/nbd.c:1511
blkdev_ioctl+0x30b/0x6d0 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f99a85a0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007fff0afa799f R14: 00007f99a85a0300 R15: 0000000000022000
INFO: task syz-executor.0:8898 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28336 pid: 8898 ppid: 7068 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
rwsem_down_write_slowpath+0x761/0x1130 kernel/locking/rwsem.c:1117
__down_write_common kernel/locking/rwsem.c:1272 [inline]
__down_write_common kernel/locking/rwsem.c:1269 [inline]
__down_write kernel/locking/rwsem.c:1281 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1528
grab_super+0x50/0x1c0 fs/super.c:389
sget_fc+0x1e3/0x700 fs/super.c:564
get_tree_bdev+0x17d/0x680 fs/super.c:1265
vfs_get_tree+0x7f/0x2c0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x7e8/0x1a40 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f99a857f188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056c1a8 RCX: 00000000004665e9
RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00000000200000c0
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008002 R11: 0000000000000246 R12: 000000000056c1a8
R13: 00007fff0afa799f R14: 00007f99a857f300 R15: 0000000000022000
INFO: task syz-executor.1:8834 blocked for more than 144 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27128 pid: 8834 ppid: 7069 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
xfs_buf_iowait+0x8e/0x420 fs/xfs/xfs_buf.c:1573
__xfs_buf_submit+0x35b/0x630 fs/xfs/xfs_buf.c:1638
xfs_buf_submit fs/xfs/xfs_buf.c:58 [inline]
xfs_buf_read_uncached+0x1bd/0x320 fs/xfs/xfs_buf.c:885
xfs_readsb+0x2a9/0x550 fs/xfs/xfs_mount.c:178
xfs_fs_fill_super+0x629/0x1990 fs/xfs/xfs_super.c:1481
get_tree_bdev+0x398/0x680 fs/super.c:1295
vfs_get_tree+0x7f/0x2c0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x7e8/0x1a40 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f43fd4d2188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00000000200000c0
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008002 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffe562c791f R14: 00007f43fd4d2300 R15: 0000000000022000
INFO: task syz-executor.1:8902 blocked for more than 144 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29624 pid: 8902 ppid: 7069 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
blk_mq_freeze_queue_wait+0xec/0x120 block/blk-mq.c:178
nbd_add_socket+0x152/0x7e0 drivers/block/nbd.c:1109
__nbd_ioctl drivers/block/nbd.c:1454 [inline]
nbd_ioctl+0x3aa/0x8f0 drivers/block/nbd.c:1511
blkdev_ioctl+0x30b/0x6d0 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f43fd490188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffe562c791f R14: 00007f43fd490300 R15: 0000000000022000
INFO: task syz-executor.1:8905 blocked for more than 144 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28904 pid: 8905 ppid: 7069 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
rwsem_down_write_slowpath+0x761/0x1130 kernel/locking/rwsem.c:1117
__down_write_common kernel/locking/rwsem.c:1272 [inline]
__down_write_common kernel/locking/rwsem.c:1269 [inline]
__down_write kernel/locking/rwsem.c:1281 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1528
grab_super+0x50/0x1c0 fs/super.c:389
sget_fc+0x1e3/0x700 fs/super.c:564
get_tree_bdev+0x17d/0x680 fs/super.c:1265
vfs_get_tree+0x7f/0x2c0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x7e8/0x1a40 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f43fd46f188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056c1a8 RCX: 00000000004665e9
RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00000000200000c0
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008002 R11: 0000000000000246 R12: 000000000056c1a8
R13: 00007ffe562c791f R14: 00007f43fd46f300 R15: 0000000000022000
INFO: task syz-executor.3:8829 blocked for more than 144 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27128 pid: 8829 ppid: 7062 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
xfs_buf_iowait+0x8e/0x420 fs/xfs/xfs_buf.c:1573
__xfs_buf_submit+0x35b/0x630 fs/xfs/xfs_buf.c:1638
xfs_buf_submit fs/xfs/xfs_buf.c:58 [inline]
xfs_buf_read_uncached+0x1bd/0x320 fs/xfs/xfs_buf.c:885
xfs_readsb+0x2a9/0x550 fs/xfs/xfs_mount.c:178
xfs_fs_fill_super+0x629/0x1990 fs/xfs/xfs_super.c:1481
get_tree_bdev+0x398/0x680 fs/super.c:1295
vfs_get_tree+0x7f/0x2c0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x7e8/0x1a40 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f2a1e4dc188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00000000200000c0
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008002 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffcbfc025ff R14: 00007f2a1e4dc300 R15: 0000000000022000
INFO: task syz-executor.3:8900 blocked for more than 145 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:29624 pid: 8900 ppid: 7062 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
blk_mq_freeze_queue_wait+0xec/0x120 block/blk-mq.c:178
nbd_add_socket+0x152/0x7e0 drivers/block/nbd.c:1109
__nbd_ioctl drivers/block/nbd.c:1454 [inline]
nbd_ioctl+0x3aa/0x8f0 drivers/block/nbd.c:1511
blkdev_ioctl+0x30b/0x6d0 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f2a1e49a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9
RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffcbfc025ff R14: 00007f2a1e49a300 R15: 0000000000022000
INFO: task syz-executor.3:8903 blocked for more than 145 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28904 pid: 8903 ppid: 7062 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
rwsem_down_write_slowpath+0x761/0x1130 kernel/locking/rwsem.c:1117
__down_write_common kernel/locking/rwsem.c:1272 [inline]
__down_write_common kernel/locking/rwsem.c:1269 [inline]
__down_write kernel/locking/rwsem.c:1281 [inline]
down_write+0x135/0x150 kernel/locking/rwsem.c:1528
grab_super+0x50/0x1c0 fs/super.c:389
sget_fc+0x1e3/0x700 fs/super.c:564
get_tree_bdev+0x17d/0x680 fs/super.c:1265
vfs_get_tree+0x7f/0x2c0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x7e8/0x1a40 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f2a1e479188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056c1a8 RCX: 00000000004665e9
RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00000000200000c0
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008002 R11: 0000000000000246 R12: 000000000056c1a8
R13: 00007ffcbfc025ff R14: 00007f2a1e479300 R15: 0000000000022000
INFO: task syz-executor.4:8842 blocked for more than 145 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27024 pid: 8842 ppid: 7065 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0x90d/0x26c0 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x19d/0x250 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
xfs_buf_iowait+0x8e/0x420 fs/xfs/xfs_buf.c:1573
__xfs_buf_submit+0x35b/0x630 fs/xfs/xfs_buf.c:1638
xfs_buf_submit fs/xfs/xfs_buf.c:58 [inline]
xfs_buf_read_uncached+0x1bd/0x320 fs/xfs/xfs_buf.c:885
xfs_readsb+0x2a9/0x550 fs/xfs/xfs_mount.c:178
xfs_fs_fill_super+0x629/0x1990 fs/xfs/xfs_super.c:1481
get_tree_bdev+0x398/0x680 fs/super.c:1295
vfs_get_tree+0x7f/0x2c0 fs/super.c:1500
do_new_mount fs/namespace.c:2988 [inline]
path_mount+0x7e8/0x1a40 fs/namespace.c:3318
do_mount fs/namespace.c:3331 [inline]
__do_sys_mount fs/namespace.c:3539 [inline]
__se_sys_mount fs/namespace.c:3516 [inline]
__x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
RSP: 002b:00007f9816f90188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00000000200000c0
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008002 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffe698e074f R14: 00007f9816f90300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8ab78980 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6231:
#0: ffff888019516d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x9c/0xb0 fs/file.c:990
1 lock held by syz-executor.0/8807:
#0: ffff888078d4e0e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0x192/0xa10 fs/super.c:229
1 lock held by syz-executor.0/8897:
#0: ffff8880194bc998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x120/0x8f0 drivers/block/nbd.c:1504
2 locks held by syz-executor.0/8898:
#0: ffff888010022998 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0xdd/0x680 fs/super.c:1255
#1: ffff888078d4e0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: grab_super+0x50/0x1c0 fs/super.c:389
1 lock held by syz-executor.1/8834:
#0: ffff8880605a80e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0x192/0xa10 fs/super.c:229
1 lock held by syz-executor.1/8902:
#0: ffff8880195eb998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x120/0x8f0 drivers/block/nbd.c:1504
2 locks held by syz-executor.1/8905:
#0: ffff888010023558 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0xdd/0x680 fs/super.c:1255
#1: ffff8880605a80e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: grab_super+0x50/0x1c0 fs/super.c:389
1 lock held by syz-executor.3/8829:
#0: ffff8880789200e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0x192/0xa10 fs/super.c:229
1 lock held by syz-executor.3/8900:
#0: ffff8880196d9998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x120/0x8f0 drivers/block/nbd.c:1504
2 locks held by syz-executor.3/8903:
#0: ffff888010024cd8 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0xdd/0x680 fs/super.c:1255
#1: ffff8880789200e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: grab_super+0x50/0x1c0 fs/super.c:389
1 lock held by syz-executor.4/8842:
#0: ffff8880781380e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0x192/0xa10 fs/super.c:229
1 lock held by syz-executor.4/8906:
#0: ffff888147478998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x120/0x8f0 drivers/block/nbd.c:1504
2 locks held by syz-executor.4/8909:
#0: ffff888010025898 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0xdd/0x680 fs/super.c:1255
#1: ffff8880781380e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: grab_super+0x50/0x1c0 fs/super.c:389
1 lock held by syz-executor.5/8870:
#0: ffff8880783f20e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0x192/0xa10 fs/super.c:229
1 lock held by syz-executor.5/8908:
#0: ffff8880196f6998 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x120/0x8f0 drivers/block/nbd.c:1504
2 locks held by syz-executor.5/8910:
#0: ffff888010026458 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0xdd/0x680 fs/super.c:1255
#1: ffff8880783f20e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: grab_super+0x50/0x1c0 fs/super.c:389
1 lock held by syz-executor.2/9262:
#0: ffff88801bbaa0e0 (&type->s_umount_key#51/1){+.+.}-{3:3}, at: alloc_super+0x192/0xa10 fs/super.c:229
2 locks held by syz-executor.2/9282:
#0: ffff888010024118 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: get_tree_bdev+0xdd/0x680 fs/super.c:1255
#1: ffff88801bbaa0e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: grab_super+0x50/0x1c0 fs/super.c:389
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x11f/0x170 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0x88c/0xbf0 kernel/hung_task.c:295
kthread+0x3ab/0x480 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3002 Comm: systemd-journal Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:populate_seccomp_data+0x1d/0x5a0 kernel/seccomp.c:237
Code: 09 ee 3c 00 eb cb 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 41 55 41 54 65 4c 8b 24 25 40 70 02 00 55 53 <48> 89 fb 49 8d 7c 24 20 48 83 ec 10 48 89 fa 48 c1 ea 03 80 3c 02
RSP: 0018:ffffc9000237fdd0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff9200046ffc7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000237fe58
RBP: ffffc9000237ff58 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1900752 R11: 0000000000000001 R12: ffff88807ab53980
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f0bf85478c0(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0bf598f000 CR3: 000000001ad8d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__seccomp_filter+0x732/0xc50 kernel/seccomp.c:1176
syscall_trace_enter.constprop.0+0x94/0x270 kernel/entry/common.c:68
do_syscall_64+0x16/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0bf7ad6840
Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24
RSP: 002b:00007ffe72a0e548 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffe72a0e850 RCX: 00007f0bf7ad6840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055a7ed150090
RBP: 000000000000000d R08: 00000000000001e0 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000055a7ed14c040 R14: 00007ffe72a0e810 R15: 000055a7ed158540
----------------
Code disassembly (best guess):
0: 09 ee or %ebp,%esi
2: 3c 00 cmp $0x0,%al
4: eb cb jmp 0xffffffd1
6: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
14: fc ff df
17: 41 57 push %r15
19: 41 56 push %r14
1b: 41 55 push %r13
1d: 41 54 push %r12
1f: 65 4c 8b 24 25 40 70 mov %gs:0x27040,%r12
26: 02 00
28: 55 push %rbp
29: 53 push %rbx
* 2a: 48 89 fb mov %rdi,%rbx <-- trapping instruction
2d: 49 8d 7c 24 20 lea 0x20(%r12),%rdi
32: 48 83 ec 10 sub $0x10,%rsp
36: 48 89 fa mov %rdi,%rdx
39: 48 c1 ea 03 shr $0x3,%rdx
3d: 80 .byte 0x80
3e: 3c 02 cmp $0x2,%al