INFO: task syz-executor.0:11085 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:21488 pid:11085 ppid: 6532 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
io_uring_cancel_generic+0x5b3/0x661 fs/io_uring.c:9877
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x281/0x24f0 kernel/exit.c:787
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x1740/0x2120 kernel/signal.c:2852
arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd641bbcae9
RSP: 002b:00007fd63f132218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd641ccff68 RCX: 00007fd641bbcae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd641ccff68
RBP: 00007fd641ccff60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd641ccff6c
R13: 00007fff349aeb2f R14: 00007fd63f132300 R15: 0000000000022000
Showing all locks held in the system:
4 locks held by kworker/1:1/25:
#0: ffff8880b9b395d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:478
#1: ffff8880b9b27888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4c1/0x780 kernel/sched/psi.c:880
#2: ffffffff8cb1dba0 (rcu_read_lock_bh){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:267
#3: ffffffff8cb1db40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:267
1 lock held by khungtaskd/27:
#0: ffffffff8cb1db40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6201:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc3-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2957 Comm: systemd-journal Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__phys_addr_symbol+0x2b/0x70 arch/x86/mm/physaddr.c:42
Code: 48 89 fb e8 17 c9 48 00 48 81 eb 00 00 00 80 bf ff ff ff 1f 48 89 de e8 b3 cd 48 00 48 81 fb 00 00 00 20 73 38 e8 f5 c8 48 00 <48> c7 c0 10 50 8b 8c 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0018:ffffc9000afbfac0 EFLAGS: 00000293
RAX: ffffffff813bbf3b RBX: 000000000a408622 RCX: ffff88807ba35700
RDX: 0000000000000000 RSI: 000000000a408622 RDI: 000000001fffffff
RBP: ffff888001000000 R08: ffffffff813bbf2d R09: fffff940003d4241
R10: fffff940003d4241 R11: 0000000000000000 R12: ffff88807a84812c
R13: 0000000000000034 R14: ffff88807a8480f8 R15: ffffffff81000000
FS: 00007fda7906c8c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fda764a3000 CR3: 00000000190c4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
check_kernel_text_object mm/usercopy.c:141 [inline]
__check_object_size+0x2bf/0x3f0 mm/usercopy.c:289
check_object_size include/linux/thread_info.h:185 [inline]
check_copy_size include/linux/thread_info.h:218 [inline]
copy_to_user include/linux/uaccess.h:199 [inline]
devkmsg_read+0x648/0x900 kernel/printk/printk.c:761
vfs_read+0x324/0xe60 fs/read_write.c:479
ksys_read+0x18f/0x2c0 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fda785fb210
Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24
RSP: 002b:00007ffeb7c45838 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007ffeb7c482b0 RCX: 00007fda785fb210
RDX: 0000000000002000 RSI: 00007ffeb7c460b0 RDI: 0000000000000009
RBP: 0000000000000000 R08: 0000000000000008 R09: 00005565237757b8
R10: 0000556523775780 R11: 0000000000000246 R12: 00007ffeb7c460b0
R13: 00007ffeb7c48208 R14: 000055652253a958 R15: 0005d2159054e91a
----------------
Code disassembly (best guess):
0: 48 89 fb mov %rdi,%rbx
3: e8 17 c9 48 00 callq 0x48c91f
8: 48 81 eb 00 00 00 80 sub $0xffffffff80000000,%rbx
f: bf ff ff ff 1f mov $0x1fffffff,%edi
14: 48 89 de mov %rbx,%rsi
17: e8 b3 cd 48 00 callq 0x48cdcf
1c: 48 81 fb 00 00 00 20 cmp $0x20000000,%rbx
23: 73 38 jae 0x5d
25: e8 f5 c8 48 00 callq 0x48c91f
* 2a: 48 c7 c0 10 50 8b 8c mov $0xffffffff8c8b5010,%rax <-- trapping instruction
31: 48 c1 e8 03 shr $0x3,%rax
35: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
3c: fc ff df
3f: 80 .byte 0x80