INFO: task jbd2/sda1-8:2937 blocked for more than 143 seconds.
Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:26528 pid: 2937 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
io_schedule+0xee/0x170 kernel/sched/core.c:8414
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0x60/0x190 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xd5/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
__wait_on_buffer+0x7a/0x90 fs/buffer.c:122
wait_on_buffer include/linux/buffer_head.h:356 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:175 [inline]
jbd2_journal_commit_transaction+0x4e77/0x6d00 fs/jbd2/commit.c:931
kjournald2+0x1d0/0x930 fs/jbd2/journal.c:213
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task syz-executor.0:3624 blocked for more than 143 seconds.
Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23008 pid: 3624 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
jbd2_log_wait_commit+0x2d2/0x430 fs/jbd2/journal.c:712
jbd2_journal_stop+0x5bc/0xf20 fs/jbd2/transaction.c:1932
__ext4_journal_stop+0xde/0x1f0 fs/ext4/ext4_jbd2.c:127
ext4_unlink+0x3cb/0x9e0 fs/ext4/namei.c:3245
vfs_unlink+0x348/0x750 fs/namei.c:4151
do_unlinkat+0x3c9/0x650 fs/namei.c:4218
__do_sys_unlink fs/namei.c:4266 [inline]
__se_sys_unlink fs/namei.c:4264 [inline]
__x64_sys_unlink+0xc6/0x110 fs/namei.c:4264
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: 0033:0x7f3aaef3a7d7
RSP: 002b:00007ffc8034afe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3aaef3a7d7
RDX: 00007ffc8034b020 RSI: 00007ffc8034b020 RDI: 00007ffc8034b0b0
RBP: 00007ffc8034b0b0 R08: 0000000000000001 R09: 00007ffc8034ae80
R10: 00005555564fb853 R11: 0000000000000206 R12: 00007f3aaef94172
R13: 00007ffc8034c170 R14: 00005555564fb810 R15: 00007ffc8034c1b0
INFO: task syz-executor.1:3625 blocked for more than 143 seconds.
Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23680 pid: 3625 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
jbd2_log_wait_commit+0x2d2/0x430 fs/jbd2/journal.c:712
jbd2_journal_stop+0x5bc/0xf20 fs/jbd2/transaction.c:1932
__ext4_journal_stop+0xde/0x1f0 fs/ext4/ext4_jbd2.c:127
ext4_unlink+0x3cb/0x9e0 fs/ext4/namei.c:3245
vfs_unlink+0x348/0x750 fs/namei.c:4151
do_unlinkat+0x3c9/0x650 fs/namei.c:4218
__do_sys_unlink fs/namei.c:4266 [inline]
__se_sys_unlink fs/namei.c:4264 [inline]
__x64_sys_unlink+0xc6/0x110 fs/namei.c:4264
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: 0033:0x7f5a10cf27d7
RSP: 002b:00007ffe3bae8b08 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5a10cf27d7
RDX: 00007ffe3bae8b40 RSI: 00007ffe3bae8b40 RDI: 00007ffe3bae8bd0
RBP: 00007ffe3bae8bd0 R08: 0000000000000001 R09: 00007ffe3bae89a0
R10: 00005555574a3853 R11: 0000000000000206 R12: 00007f5a10d4c172
R13: 00007ffe3bae9c90 R14: 00005555574a3810 R15: 00007ffe3bae9cd0
INFO: task syz-executor.4:3626 blocked for more than 144 seconds.
Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23632 pid: 3626 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
jbd2_log_wait_commit+0x2d2/0x430 fs/jbd2/journal.c:712
jbd2_journal_stop+0x5bc/0xf20 fs/jbd2/transaction.c:1932
__ext4_journal_stop+0xde/0x1f0 fs/ext4/ext4_jbd2.c:127
ext4_unlink+0x3cb/0x9e0 fs/ext4/namei.c:3245
vfs_unlink+0x348/0x750 fs/namei.c:4151
do_unlinkat+0x3c9/0x650 fs/namei.c:4218
__do_sys_unlink fs/namei.c:4266 [inline]
__se_sys_unlink fs/namei.c:4264 [inline]
__x64_sys_unlink+0xc6/0x110 fs/namei.c:4264
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: 0033:0x7f923da787d7
RSP: 002b:00007ffde4ee7818 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f923da787d7
RDX: 00007ffde4ee7850 RSI: 00007ffde4ee7850 RDI: 00007ffde4ee78e0
RBP: 00007ffde4ee78e0 R08: 0000000000000001 R09: 00007ffde4ee76b0
R10: 0000555556d8e853 R11: 0000000000000206 R12: 00007f923dad2172
R13: 00007ffde4ee89a0 R14: 0000555556d8e810 R15: 00007ffde4ee89e0
INFO: task syz-executor.2:3628 blocked for more than 144 seconds.
Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23440 pid: 3628 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
jbd2_log_wait_commit+0x2d2/0x430 fs/jbd2/journal.c:712
jbd2_journal_stop+0x5bc/0xf20 fs/jbd2/transaction.c:1932
__ext4_journal_stop+0xde/0x1f0 fs/ext4/ext4_jbd2.c:127
ext4_unlink+0x3cb/0x9e0 fs/ext4/namei.c:3245
vfs_unlink+0x348/0x750 fs/namei.c:4151
do_unlinkat+0x3c9/0x650 fs/namei.c:4218
__do_sys_unlink fs/namei.c:4266 [inline]
__se_sys_unlink fs/namei.c:4264 [inline]
__x64_sys_unlink+0xc6/0x110 fs/namei.c:4264
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: 0033:0x7fdf4993b7d7
RSP: 002b:00007ffe14a54b48 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdf4993b7d7
RDX: 00007ffe14a54b80 RSI: 00007ffe14a54b80 RDI: 00007ffe14a54c10
RBP: 00007ffe14a54c10 R08: 0000000000000001 R09: 00007ffe14a549e0
R10: 00005555570fd853 R11: 0000000000000206 R12: 00007fdf49995172
R13: 00007ffe14a55cd0 R14: 00005555570fd810 R15: 00007ffe14a55d10
INFO: task syz-executor.3:3690 blocked for more than 144 seconds.
Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23872 pid: 3690 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
jbd2_log_wait_commit+0x2d2/0x430 fs/jbd2/journal.c:712
jbd2_journal_stop+0x5bc/0xf20 fs/jbd2/transaction.c:1932
__ext4_journal_stop+0xde/0x1f0 fs/ext4/ext4_jbd2.c:127
ext4_unlink+0x3cb/0x9e0 fs/ext4/namei.c:3245
vfs_unlink+0x348/0x750 fs/namei.c:4151
do_unlinkat+0x3c9/0x650 fs/namei.c:4218
__do_sys_unlink fs/namei.c:4266 [inline]
__se_sys_unlink fs/namei.c:4264 [inline]
__x64_sys_unlink+0xc6/0x110 fs/namei.c:4264
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: 0033:0x7f5c49b817d7
RSP: 002b:00007ffc9d88b288 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5c49b817d7
RDX: 00007ffc9d88b2c0 RSI: 00007ffc9d88b2c0 RDI: 00007ffc9d88b350
RBP: 00007ffc9d88b350 R08: 0000000000000001 R09: 00007ffc9d88b120
R10: 000055555735a853 R11: 0000000000000206 R12: 00007f5c49bdb172
R13: 00007ffc9d88c410 R14: 000055555735a810 R15: 00007ffc9d88c450
INFO: task syz-executor.5:7891 can't die for more than 144 seconds.
task:syz-executor.5 state:D stack:28112 pid: 7891 ppid: 3627 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
jbd2_log_wait_commit+0x2d2/0x430 fs/jbd2/journal.c:712
jbd2_journal_stop+0x5bc/0xf20 fs/jbd2/transaction.c:1932
__ext4_journal_stop+0xde/0x1f0 fs/ext4/ext4_jbd2.c:127
ext4_symlink+0x894/0xd40 fs/ext4/namei.c:3365
vfs_symlink fs/namei.c:4299 [inline]
vfs_symlink+0x108/0x2c0 fs/namei.c:4284
do_symlinkat+0x261/0x2e0 fs/namei.c:4328
__do_sys_symlink fs/namei.c:4350 [inline]
__se_sys_symlink fs/namei.c:4348 [inline]
__x64_sys_symlink+0x75/0x90 fs/namei.c:4348
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: 0033:0x7f46967d47a7
RSP: 002b:00007ffd7c6c4bc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46967d47a7
RDX: ffffffffffffffbc RSI: 00007f469682f092 RDI: 00007f469682e24a
RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffd7c6c4640
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd7c6c4c90
INFO: task syz-executor.5:7891 blocked for more than 145 seconds.
Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28112 pid: 7891 ppid: 3627 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
jbd2_log_wait_commit+0x2d2/0x430 fs/jbd2/journal.c:712
jbd2_journal_stop+0x5bc/0xf20 fs/jbd2/transaction.c:1932
__ext4_journal_stop+0xde/0x1f0 fs/ext4/ext4_jbd2.c:127
ext4_symlink+0x894/0xd40 fs/ext4/namei.c:3365
vfs_symlink fs/namei.c:4299 [inline]
vfs_symlink+0x108/0x2c0 fs/namei.c:4284
do_symlinkat+0x261/0x2e0 fs/namei.c:4328
__do_sys_symlink fs/namei.c:4350 [inline]
__se_sys_symlink fs/namei.c:4348 [inline]
__x64_sys_symlink+0x75/0x90 fs/namei.c:4348
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: 0033:0x7f46967d47a7
RSP: 002b:00007ffd7c6c4bc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46967d47a7
RDX: ffffffffffffffbc RSI: 00007f469682f092 RDI: 00007f469682e24a
RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffd7c6c4640
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd7c6c4c90
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb828e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by getty/3288:
#0: ffff88814a9dc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
3 locks held by syz-executor.0/3624:
#0: ffff88807f252460 (sb_writers#5){.+.+}-{0:0}, at: do_unlinkat+0x17f/0x650 fs/namei.c:4197
#1: ffff88804ae9dda8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:812 [inline]
#1: ffff88804ae9dda8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: do_unlinkat+0x269/0x650 fs/namei.c:4201
#2: ffff888040c921d8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#2: ffff888040c921d8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: vfs_unlink+0xd0/0x750 fs/namei.c:4140
3 locks held by syz-executor.1/3625:
#0: ffff88807f252460 (sb_writers#5){.+.+}-{0:0}, at: do_unlinkat+0x17f/0x650 fs/namei.c:4197
#1: ffff888040d5b5c8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:812 [inline]
#1: ffff888040d5b5c8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: do_unlinkat+0x269/0x650 fs/namei.c:4201
#2: ffff888040d583f0 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#2: ffff888040d583f0 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: vfs_unlink+0xd0/0x750 fs/namei.c:4140
3 locks held by syz-executor.4/3626:
#0: ffff88807f252460 (sb_writers#5){.+.+}-{0:0}, at: do_unlinkat+0x17f/0x650 fs/namei.c:4197
#1: ffff888040d597e0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:812 [inline]
#1: ffff888040d597e0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: do_unlinkat+0x269/0x650 fs/namei.c:4201
#2: ffff8880707297e0 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#2: ffff8880707297e0 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: vfs_unlink+0xd0/0x750 fs/namei.c:4140
3 locks held by syz-executor.2/3628:
#0: ffff88807f252460 (sb_writers#5){.+.+}-{0:0}, at: do_unlinkat+0x17f/0x650 fs/namei.c:4197
#1: ffff88804ae9abd0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:812 [inline]
#1: ffff88804ae9abd0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: do_unlinkat+0x269/0x650 fs/namei.c:4201
#2: ffff88807072a1d8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#2: ffff88807072a1d8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: vfs_unlink+0xd0/0x750 fs/namei.c:4140
3 locks held by syz-executor.3/3690:
#0: ffff88807f252460 (sb_writers#5){.+.+}-{0:0}, at: do_unlinkat+0x17f/0x650 fs/namei.c:4197
#1: ffff88804ae9f198 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:812 [inline]
#1: ffff88804ae9f198 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: do_unlinkat+0x269/0x650 fs/namei.c:4201
#2: ffff88807072b5c8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:777 [inline]
#2: ffff88807072b5c8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: vfs_unlink+0xd0/0x750 fs/namei.c:4140
1 lock held by syz-executor.5/3805:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/3814:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/3829:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/4480:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/4495:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/4534:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/5057:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/5065:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/5073:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/5079:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/7563:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/7804:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/7828:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
1 lock held by syz-executor.5/7852:
#0: ffff88807f252650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
2 locks held by syz-executor.5/7891:
#0: ffff88807f252460 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0xf3/0x480 fs/namei.c:3699
#1: ffff88804ae9bfc0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:812 [inline]
#1: ffff88804ae9bfc0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: filename_create+0x158/0x480 fs/namei.c:3704
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc6-next-20211224-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+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:256 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:413
kthread+0x2e9/0x3a0 kernel/kthread.c:377
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: 5458 Comm: kworker/1:11 Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
RIP: 0010:unwind_get_return_address+0x46/0x90 arch/x86/kernel/unwind_orc.c:313
Code: 74 04 3c 03 7e 51 8b 03 85 c0 75 05 5b 31 c0 5d c3 48 8d 6b 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 <75> 32 48 8b 7b 48 e8 ef 7a 19 00 85 c0 74 d3 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000597f7e0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc9000597f7f8 RCX: 0000000000000000
RDX: 1ffff92000b2ff08 RSI: ffffc9000597fcf8 RDI: ffffc9000597f7f8
RBP: ffffc9000597f840 R08: ffffffff8e5f5386 R09: 0000000000000001
R10: fffff52000b2ff0a R11: 0000000000088077 R12: ffffc9000597f8b0
R13: 0000000000000000 R14: ffff888045890000 R15: ffffea000207ee00
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f674c73e990 CR3: 000000007f69a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track+0x21/0x30 mm/kasan/common.c:45
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free+0x166/0x1a0 mm/kasan/common.c:328
kasan_slab_free include/linux/kasan.h:236 [inline]
slab_free_hook mm/slub.c:1728 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1754
slab_free mm/slub.c:3509 [inline]
kmem_cache_free+0xdb/0x3b0 mm/slub.c:3526
kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:700
__kfree_skb net/core/skbuff.c:757 [inline]
consume_skb net/core/skbuff.c:912 [inline]
consume_skb+0xcf/0x160 net/core/skbuff.c:906
nsim_dev_trap_report drivers/net/netdevsim/dev.c:818 [inline]
nsim_dev_trap_report_work+0x85d/0xbc0 drivers/net/netdevsim/dev.c:843
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 74 04 je 0x6
2: 3c 03 cmp $0x3,%al
4: 7e 51 jle 0x57
6: 8b 03 mov (%rbx),%eax
8: 85 c0 test %eax,%eax
a: 75 05 jne 0x11
c: 5b pop %rbx
d: 31 c0 xor %eax,%eax
f: 5d pop %rbp
10: c3 retq
11: 48 8d 6b 48 lea 0x48(%rbx),%rbp
15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1c: fc ff df
1f: 48 89 ea mov %rbp,%rdx
22: 48 c1 ea 03 shr $0x3,%rdx
26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
* 2a: 75 32 jne 0x5e <-- trapping instruction
2c: 48 8b 7b 48 mov 0x48(%rbx),%rdi
30: e8 ef 7a 19 00 callq 0x197b24
35: 85 c0 test %eax,%eax
37: 74 d3 je 0xc
39: 48 rex.W
3a: b8 00 00 00 00 mov $0x0,%eax