INFO: task jbd2/sda1-8:2934 blocked for more than 143 seconds. Not tainted 5.16.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jbd2/sda1-8 state:D stack:26152 pid: 2934 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4f00 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+0x4e36/0x6c20 fs/jbd2/commit.c:931 kjournald2+0x1d0/0x930 fs/jbd2/journal.c:213 kthread+0x2e9/0x3a0 kernel/kthread.c:359 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor.1:20858 blocked for more than 143 seconds. Not tainted 5.16.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:25328 pid:20858 ppid: 3627 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4f00 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_complete_transaction+0x184/0x200 fs/jbd2/journal.c:848 ext4_fc_commit+0x90f/0x19e0 fs/ext4/fast_commit.c:1121 ext4_fsync_journal fs/ext4/fsync.c:115 [inline] ext4_sync_file+0x3cd/0xfd0 fs/ext4/fsync.c:174 vfs_fsync_range+0x13a/0x220 fs/sync.c:182 generic_write_sync include/linux/fs.h:2896 [inline] iomap_dio_complete+0x621/0x7c0 fs/iomap/direct-io.c:117 iomap_dio_rw+0x6a/0x90 fs/iomap/direct-io.c:683 ext4_dio_write_iter fs/ext4/file.c:564 [inline] ext4_file_write_iter+0xe1b/0x14d0 fs/ext4/file.c:675 call_write_iter include/linux/fs.h:2086 [inline] do_iter_readv_writev+0x47a/0x750 fs/read_write.c:725 do_iter_write+0x188/0x710 fs/read_write.c:851 vfs_iter_write+0x70/0xa0 fs/read_write.c:892 iter_file_splice_write+0x723/0xc70 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x110/0x180 fs/splice.c:936 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891 do_splice_direct+0x1b3/0x280 fs/splice.c:979 do_sendfile+0xaf2/0x1250 fs/read_write.c:1245 __do_sys_sendfile64 fs/read_write.c:1310 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296 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: 0033:0x7f86e7313fe9 RSP: 002b:00007f86e5c89168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f86e7426f60 RCX: 00007f86e7313fe9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007f86e736e08d R08: 0000000000000000 R09: 0000000000000000 R10: 000000008000000a R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc8c99cb0f R14: 00007f86e5c89300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb852e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 5 locks held by kworker/u4:4/978: 2 locks held by getty/3281: #0: ffff88814aa3a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077 2 locks held by syz-executor.1/20858: #0: ffff88807e18a460 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_sendfile64 fs/read_write.c:1310 [inline] #0: ffff88807e18a460 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_sendfile64 fs/read_write.c:1296 [inline] #0: ffff88807e18a460 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296 #1: ffff888037558de8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:784 [inline] #1: ffff888037558de8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: ext4_dio_write_iter fs/ext4/file.c:508 [inline] #1: ffff888037558de8 (&sb->s_type->i_mutex_key#10){++++}-{3:3}, at: ext4_file_write_iter+0xaeb/0x14d0 fs/ext4/file.c:675 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-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:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x2e9/0x3a0 kernel/kthread.c:359 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: 0 Comm: swapper/1 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x60 kernel/kcov.c:200 Code: be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 d9 1e 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 70 02 00 00 01 ff 00 74 0e 85 c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b RSP: 0018:ffffc90000d57cf8 EFLAGS: 00000046 RAX: 0000000080000001 RBX: 000000000005cf11 RCX: 0000000000000000 RDX: ffff888011915700 RSI: ffffffff8682eae6 RDI: 0000000000000003 RBP: 0000000000c23b50 R08: 000000000005cf11 R09: ffff8880b9d3a69b R10: ffffffff8682eb81 R11: 0000000000000000 R12: 0000000000056534 R13: 000000007fffffff R14: 00000000000007d5 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0005f10c8 CR3: 0000000019d48000 CR4: 0000000000350ee0 Call Trace: get_typical_interval drivers/cpuidle/governors/menu.c:238 [inline] menu_select+0x6c6/0x1900 drivers/cpuidle/governors/menu.c:312 cpuidle_idle_call kernel/sched/idle.c:232 [inline] do_idle+0x367/0x590 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_secondary+0x265/0x340 arch/x86/kernel/smpboot.c:272 secondary_startup_64_no_verify+0xc3/0xcb ---------------- Code disassembly (best guess): 0: be b0 01 00 00 mov $0x1b0,%esi 5: e8 b4 ff ff ff callq 0xffffffbe a: 31 c0 xor %eax,%eax c: c3 retq d: 90 nop e: 65 8b 05 d9 1e 8a 7e mov %gs:0x7e8a1ed9(%rip),%eax # 0x7e8a1eee 15: 89 c1 mov %eax,%ecx 17: 48 8b 34 24 mov (%rsp),%rsi 1b: 81 e1 00 01 00 00 and $0x100,%ecx 21: 65 48 8b 14 25 00 70 mov %gs:0x27000,%rdx 28: 02 00 * 2a: a9 00 01 ff 00 test $0xff0100,%eax <-- trapping instruction 2f: 74 0e je 0x3f 31: 85 c9 test %ecx,%ecx 33: 74 35 je 0x6a 35: 8b 82 a4 15 00 00 mov 0x15a4(%rdx),%eax 3b: 85 c0 test %eax,%eax 3d: 74 2b je 0x6a 3f: 8b .byte 0x8b