INFO: task jbd2/sda1-8:2934 blocked for more than 143 seconds. Not tainted 5.16.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jbd2/sda1-8 state:D stack:24688 pid: 2934 ppid: 2 flags:0x00004000 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 jbd2_journal_commit_transaction+0xc24/0x5c00 fs/jbd2/commit.c:496 kjournald2+0x4b4/0x940 fs/jbd2/journal.c:213 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8cb1de40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3284: #0: ffff88814ae5a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2113 3 locks held by syz-fuzzer/3600: #0: ffff8880213e2870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:1034 #1: ffff888072c497e0 (&type->i_mutex_dir_key#4){++++}-{3:3}, at: iterate_dir+0x124/0x640 fs/readdir.c:55 #2: ffff88814b40a460 (sb_writers#5){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2505 [inline] #2: ffff88814b40a460 (sb_writers#5){.+.+}-{0:0}, at: iterate_dir+0x552/0x640 fs/readdir.c:70 2 locks held by kworker/u4:6/3736: 1 lock held by syz-executor.3/4443: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/4475: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/4592: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/4657: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/4669: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/4695: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/4711: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.0/5163: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.0/5765: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.1/5783: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/5804: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/5888: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/5908: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/5928: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/5950: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.2/5995: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/6314: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.0/6339: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/6351: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/6369: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.5/6375: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.4/6382: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/6389: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 1 lock held by syz-executor.3/6393: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 3 locks held by syz-executor.2/6408: #0: ffff88814b40a460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:376 #1: ffff8880304721d8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:818 [inline] #1: ffff8880304721d8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: filename_create+0x1da/0x4e0 fs/namei.c:3654 #2: ffff88814b40e990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x136d/0x1630 fs/jbd2/transaction.c:466 1 lock held by syz-executor.4/6409: #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1810 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1927 [inline] #0: ffff88814b40a650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x50e/0xf70 fs/ext4/inode.c:241 2 locks held by syz-executor.0/6413: #0: ffff88814b40a460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:376 #1: ffff888030473fc0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:818 [inline] #1: ffff888030473fc0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: filename_create+0x1da/0x4e0 fs/namei.c:3654 2 locks held by syz-executor.3/6414: #0: ffff88814b40a460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:376 #1: ffff88803393e7a0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:818 [inline] #1: ffff88803393e7a0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: filename_create+0x1da/0x4e0 fs/namei.c:3654 2 locks held by syz-executor.5/6415: #0: ffff88814b40a460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:376 #1: ffff8880304749b8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:818 [inline] #1: ffff8880304749b8 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: filename_create+0x1da/0x4e0 fs/namei.c:3654 2 locks held by syz-executor.4/6416: #0: ffff88814b40a460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:376 #1: ffff88803393d3b0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:818 [inline] #1: ffff88803393d3b0 (&type->i_mutex_dir_key#4/1){+.+.}-{3:3}, at: filename_create+0x1da/0x4e0 fs/namei.c:3654 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc5-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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3685 Comm: kworker/1:5 Not tainted 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient gc_worker RIP: 0010:__lock_acquire+0xfc7/0x2b00 Code: e8 20 41 29 c4 89 c1 c1 c1 04 44 31 e1 44 01 f8 89 ca c1 c2 06 41 29 cf 44 31 fa 01 c1 29 d0 89 d6 c1 c6 08 31 c6 01 ca 29 f1 <89> f3 c1 c3 10 31 cb 01 d6 29 da 41 89 df 41 c1 c7 13 41 31 d7 01 RSP: 0018:ffffc900036af820 EFLAGS: 00000012 RAX: 0000000033ee21f1 RBX: 00000000000c0446 RCX: 00000000695a9bea RDX: 0000000073116b13 RSI: 000000008afdbb8f RDI: dffffc0000000000 RBP: ffffc900036af970 R08: dffffc0000000000 R09: fffffbfff1ff39ee R10: fffffbfff1ff39ee R11: 0000000000000000 R12: 00000000a1fb98db R13: ffff88801b870ad8 R14: ffff88801b870000 R15: 0000000012f1680a FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c01f7bd008 CR3: 000000001298c000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5637 seqcount_lockdep_reader_access+0x147/0x230 include/linux/seqlock.h:104 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:326 [inline] gc_worker+0x19a/0xbb0 net/netfilter/nf_conntrack_core.c:1441 process_one_work+0x853/0x1140 kernel/workqueue.c:2298 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 ---------------- Code disassembly (best guess): 0: e8 20 41 29 c4 callq 0xc4294125 5: 89 c1 mov %eax,%ecx 7: c1 c1 04 rol $0x4,%ecx a: 44 31 e1 xor %r12d,%ecx d: 44 01 f8 add %r15d,%eax 10: 89 ca mov %ecx,%edx 12: c1 c2 06 rol $0x6,%edx 15: 41 29 cf sub %ecx,%r15d 18: 44 31 fa xor %r15d,%edx 1b: 01 c1 add %eax,%ecx 1d: 29 d0 sub %edx,%eax 1f: 89 d6 mov %edx,%esi 21: c1 c6 08 rol $0x8,%esi 24: 31 c6 xor %eax,%esi 26: 01 ca add %ecx,%edx 28: 29 f1 sub %esi,%ecx * 2a: 89 f3 mov %esi,%ebx <-- trapping instruction 2c: c1 c3 10 rol $0x10,%ebx 2f: 31 cb xor %ecx,%ebx 31: 01 d6 add %edx,%esi 33: 29 da sub %ebx,%edx 35: 41 89 df mov %ebx,%r15d 38: 41 c1 c7 13 rol $0x13,%r15d 3c: 41 31 d7 xor %edx,%r15d 3f: 01 .byte 0x1