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INFO: task syz-executor.1:2226 blocked for more than 430 seconds. Not tainted 5.15.0-rc1-syzkaller-00001-g64a19591a293 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid: 2226 ppid: 2139 flags:0x00000000 Call Trace: [<ffffffff82bdaf8a>] context_switch kernel/sched/core.c:4940 [inline] [<ffffffff82bdaf8a>] __schedule+0x506/0x1048 kernel/sched/core.c:6287 [<ffffffff82bdbb32>] schedule+0x66/0x168 kernel/sched/core.c:6366 [<ffffffff82bdbce2>] io_schedule+0x5a/0x88 kernel/sched/core.c:8389 [<ffffffff82bdc8ca>] bit_wait_io+0x12/0x70 kernel/sched/wait_bit.c:209 [<ffffffff82bdc4c6>] __wait_on_bit+0x7c/0xf6 kernel/sched/wait_bit.c:49 [<ffffffff82bdc5ba>] out_of_line_wait_on_bit+0x7a/0x92 kernel/sched/wait_bit.c:64 [<ffffffff807158f2>] wait_on_bit_io include/linux/wait_bit.h:101 [inline] [<ffffffff807158f2>] do_get_write_access+0x776/0xb18 fs/jbd2/transaction.c:1098 [<ffffffff80715d6c>] jbd2_journal_get_write_access+0xd8/0x124 fs/jbd2/transaction.c:1233 [<ffffffff80628504>] __ext4_journal_get_write_access+0x122/0x2b6 fs/ext4/ext4_jbd2.c:233 [<ffffffff80670020>] ext4_reserve_inode_write+0x10a/0x164 fs/ext4/inode.c:5763 [<ffffffff806704b2>] __ext4_mark_inode_dirty+0x100/0x602 fs/ext4/inode.c:5929 [<ffffffff8067b34e>] ext4_dirty_inode+0x90/0xba fs/ext4/inode.c:5966 [<ffffffff804a25f8>] __mark_inode_dirty+0x40a/0xefe fs/fs-writeback.c:2398 [<ffffffff80475b40>] generic_update_time fs/inode.c:1774 [inline] [<ffffffff80475b40>] update_time fs/inode.c:1787 [inline] [<ffffffff80475b40>] touch_atime+0x5ea/0x60e fs/inode.c:1858 [<ffffffff80460250>] file_accessed include/linux/fs.h:2504 [inline] [<ffffffff80460250>] iterate_dir+0x254/0x386 fs/readdir.c:70 [<ffffffff8046095e>] __do_sys_getdents64 fs/readdir.c:369 [inline] [<ffffffff8046095e>] sys_getdents64+0x8a/0x216 fs/readdir.c:354 [<ffffffff8000519c>] ret_from_syscall+0x0/0x2 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff83d2b3e8 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x32/0x1fa kernel/locking/lockdep.c:6448 1 lock held by klogd/1791: 2 locks held by getty/1958: #0: ffffffe00da35098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x48 drivers/tty/tty_ldsem.c:340 #1: ffffffd0107f52e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x9a0/0xafa drivers/tty/n_tty.c:2113 1 lock held by syz-fuzzer/1994: 3 locks held by syz-executor.1/2226: #0: ffffffe00bdca1c0 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: iterate_dir+0x8e/0x386 fs/readdir.c:55 #1: ffffffe009e72460 (sb_writers#4){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2504 [inline] #1: ffffffe009e72460 (sb_writers#4){.+.+}-{0:0}, at: iterate_dir+0x254/0x386 fs/readdir.c:70 #2: ffffffe009cae990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x24a/0xad6 fs/jbd2/transaction.c:427 2 locks held by kworker/0:1/3793: 6 locks held by kworker/u4:1/3810: =============================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/12/02 00:14 | git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes | 64a19591a293 | 61f86278 | .config | console log | report | info | ci-qemu2-riscv64 | INFO: task hung in do_get_write_access |