INFO: task syz-executor429:5041 blocked for more than 143 seconds.
Not tainted 6.6.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor429 state:D stack:25904 pid:5041 ppid:5039 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x21b/0x440 block/fops.c:773
vfs_fallocate+0x551/0x6b0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f320a918ae9
RSP: 002b:00007fff4b4e33f8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f320a918ae9
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff4b4e3618 R14: 00007fff4b4e3420 R15: 00007fff4b4e3410
INFO: task syz-executor429:5044 blocked for more than 143 seconds.
Not tainted 6.6.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor429 state:D stack:26520 pid:5044 ppid:5042 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x21b/0x440 block/fops.c:773
vfs_fallocate+0x551/0x6b0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f320a918ae9
RSP: 002b:00007fff4b4e33f8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f320a918ae9
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff4b4e3618 R14: 00007fff4b4e3420 R15: 00007fff4b4e3410
INFO: task syz-executor429:5045 blocked for more than 143 seconds.
Not tainted 6.6.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor429 state:D stack:26248 pid:5045 ppid:5043 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
filemap_invalidate_lock include/linux/fs.h:847 [inline]
blkdev_fallocate+0x21b/0x440 block/fops.c:773
vfs_fallocate+0x551/0x6b0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:353
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f320a918ae9
RSP: 002b:00007fff4b4e33f8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f320a918ae9
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff4b4e3618 R14: 00007fff4b4e3420 R15: 00007fff4b4e3410
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d32c4a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c4a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c4a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4786:
#0: ffff8880268010a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
1 lock held by syz-executor429/5040:
1 lock held by syz-executor429/5041:
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x440 block/fops.c:773
1 lock held by syz-executor429/5044:
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x440 block/fops.c:773
1 lock held by syz-executor429/5045:
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x440 block/fops.c:773
1 lock held by syz-executor429/5063:
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x440 block/fops.c:773
1 lock held by syz-executor429/5070:
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801ae20940 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21b/0x440 block/fops.c:773
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4473 Comm: klogd Not tainted 6.6.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x90 kernel/kcov.c:305
Code: 89 11 48 c7 44 0a 08 03 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 0f 1e fa 4c 8b 04 24 65 48 8b 15 00 aa 75 7e 65 8b 05 01 aa 75
RSP: 0018:ffffc900031372f0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffc90003137368 RCX: ffffffff8fe04000
RDX: ffffffff8ff6ed01 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff813d9df7 R09: ffffffff813db8d0
R10: 0000000000000003 R11: ffff88807ee9bb80 R12: ffff88807ee9bb80
R13: ffffffff817bb8f0 R14: dffffc0000000000 R15: 1ffff92000626e6d
FS: 00007fa460976380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555560726f8 CR3: 000000007ef08000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_get_return_address+0x68/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x11f/0x1a0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x67/0x3d0 mm/slab.h:762
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x148/0x330 mm/slub.c:3523
__alloc_skb+0x181/0x420 net/core/skbuff.c:640
alloc_skb include/linux/skbuff.h:1286 [inline]
alloc_skb_with_frags+0xc3/0x780 net/core/skbuff.c:6313
sock_alloc_send_pskb+0x919/0xa50 net/core/sock.c:2795
unix_dgram_sendmsg+0x659/0x2070 net/unix/af_unix.c:1953
sock_sendmsg_nosec net/socket.c:730 [inline]
sock_sendmsg net/socket.c:753 [inline]
__sys_sendto+0x484/0x640 net/socket.c:2177
__do_sys_sendto net/socket.c:2189 [inline]
__se_sys_sendto net/socket.c:2185 [inline]
__x64_sys_sendto+0xde/0xf0 net/socket.c:2185
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa460ad89b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffed9d000c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa460ad89b5
RDX: 0000000000000074 RSI: 000055ba90562d70 RDI: 0000000000000003
RBP: 000055ba9055e910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007fa460c66212 R14: 00007ffed9d001c8 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.893 msecs