INFO: task syz-executor218:3614 blocked for more than 143 seconds.
Not tainted 5.18.0-syzkaller-12234-g50fd82b3a9a9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor218 state:D stack:25328 pid: 3614 ppid: 3611 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6431
schedule+0xeb/0x1b0 kernel/sched/core.c:6503
rwsem_down_write_slowpath+0xe21/0x1370 kernel/locking/rwsem.c:1172
__down_write_common kernel/locking/rwsem.c:1287 [inline]
__down_write kernel/locking/rwsem.c:1296 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1543
filemap_invalidate_lock include/linux/fs.h:786 [inline]
blkdev_fallocate+0x21f/0x390 block/fops.c:637
vfs_fallocate+0x515/0x670 fs/open.c:323
ksys_fallocate fs/open.c:346 [inline]
__do_sys_fallocate fs/open.c:354 [inline]
__se_sys_fallocate fs/open.c:352 [inline]
__x64_sys_fallocate+0xb9/0x100 fs/open.c:352
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fbb4a5dfe29
RSP: 002b:00007ffe703ac988 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fbb4a5dfe29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 7fffffffffffffff R11: 0000000000000246 R12: 00007fbb4a5a3600
R13: 0000000000000000 R14: 00007ffe703ac9b0 R15: 00007ffe703ac9a0
INFO: task syz-executor218:3631 blocked for more than 143 seconds.
Not tainted 5.18.0-syzkaller-12234-g50fd82b3a9a9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor218 state:D stack:26872 pid: 3631 ppid: 3603 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6431
schedule+0xeb/0x1b0 kernel/sched/core.c:6503
rwsem_down_write_slowpath+0xe21/0x1370 kernel/locking/rwsem.c:1172
__down_write_common kernel/locking/rwsem.c:1287 [inline]
__down_write kernel/locking/rwsem.c:1296 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1543
filemap_invalidate_lock include/linux/fs.h:786 [inline]
blkdev_fallocate+0x21f/0x390 block/fops.c:637
vfs_fallocate+0x515/0x670 fs/open.c:323
ksys_fallocate fs/open.c:346 [inline]
__do_sys_fallocate fs/open.c:354 [inline]
__se_sys_fallocate fs/open.c:352 [inline]
__x64_sys_fallocate+0xb9/0x100 fs/open.c:352
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fbb4a5dfe29
RSP: 002b:00007ffe703ac988 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fbb4a5dfe29
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 7fffffffffffffff R11: 0000000000000246 R12: 000000000000a3fd
R13: 00007ffe703ac99c R14: 00007ffe703ac9b0 R15: 00007ffe703ac9a0
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cb1eea0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3283:
#0: ffff88807f0d8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ad/0x1c90 drivers/tty/n_tty.c:2075
1 lock held by syz-executor218/3613:
1 lock held by syz-executor218/3614:
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline]
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:637
1 lock held by syz-executor218/3631:
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline]
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:637
1 lock held by syz-executor218/3632:
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline]
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:637
1 lock held by syz-executor218/3639:
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline]
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:637
1 lock held by syz-executor218/3640:
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:786 [inline]
#0: ffff888140c9b4b8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:637
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.18.0-syzkaller-12234-g50fd82b3a9a9 #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+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xd18/0xd60 kernel/hung_task.c:378
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2960 Comm: klogd Not tainted 5.18.0-syzkaller-12234-g50fd82b3a9a9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_heap_object+0xdf/0x870 mm/usercopy.c:190
Code: a8 00 f0 ff ff 48 85 db 48 0f 45 e8 4c 89 e7 48 89 ee e8 14 eb a0 ff 49 39 ec 0f 87 fa 02 00 00 e8 c6 e8 a0 ff e9 c2 01 00 00 cc 31 56 ff 84 c0 0f 84 b0 01 00 00 89 5c 24 0c 48 bd 00 00 00
RSP: 0018:ffffc90002d1fa28 EFLAGS: 00000246
RAX: ffffe8ffffffff00 RBX: 0000000000000000 RCX: ffff88807dfb8000
RDX: 0000000000000000 RSI: 000000000000003a RDI: ffff888020323c00
RBP: 0000000000000000 R08: 0000000000000005 R09: ffffffff81e6a130
R10: 0000000000000003 R11: ffff88807dfb8000 R12: ffff888074fcca00
R13: ffff888020323c00 R14: ffff888020323c00 R15: 000000000000003a
FS: 00007fcec4738800(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb4a650130 CR3: 0000000025940000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__check_object_size+0xad/0x210 mm/usercopy.c:252
check_object_size include/linux/thread_info.h:199 [inline]
check_copy_size include/linux/thread_info.h:235 [inline]
copy_from_iter include/linux/uio.h:168 [inline]
skb_copy_datagram_from_iter+0xdf/0x6d0 net/core/datagram.c:556
unix_dgram_sendmsg+0x97a/0x1fc0 net/unix/af_unix.c:1908
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
__sys_sendto+0x439/0x5c0 net/socket.c:2119
__do_sys_sendto net/socket.c:2131 [inline]
__se_sys_sendto net/socket.c:2127 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2127
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fcec48d40ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffde8c6f138 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcec48d40ac
RDX: 000000000000003a RSI: 00005569ba999c80 RDI: 0000000000000003
RBP: 00005569ba995910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007fcec4a4f77d R15: 00007ffde8c6f248
----------------
Code disassembly (best guess):
0: a8 00 test $0x0,%al
2: f0 ff lock (bad)
4: ff 48 85 decl -0x7b(%rax)
7: db 48 0f fisttpl 0xf(%rax)
a: 45 e8 4c 89 e7 48 rex.RB callq 0x48e7895c
10: 89 ee mov %ebp,%esi
12: e8 14 eb a0 ff callq 0xffa0eb2b
17: 49 39 ec cmp %rbp,%r12
1a: 0f 87 fa 02 00 00 ja 0x31a
20: e8 c6 e8 a0 ff callq 0xffa0e8eb
25: e9 c2 01 00 00 jmpq 0x1ec
* 2a: e8 cc 31 56 ff callq 0xff5631fb <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 84 b0 01 00 00 je 0x1e7
37: 89 5c 24 0c mov %ebx,0xc(%rsp)
3b: 48 rex.W
3c: bd .byte 0xbd
3d: 00 00 add %al,(%rax)