INFO: task jfsCommit:107 blocked for more than 143 seconds. Tainted: G W 6.1.122-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:26112 pid:107 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5241 [inline] __schedule+0x143f/0x4570 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 io_schedule+0x88/0x100 kernel/sched/core.c:8786 __lock_metapage fs/jfs/jfs_metapage.c:50 [inline] lock_metapage+0x250/0x370 fs/jfs/jfs_metapage.c:64 __get_metapage+0x50f/0x1040 fs/jfs/jfs_metapage.c:639 diIAGRead+0xcb/0x130 fs/jfs/jfs_imap.c:2672 diFree+0xa7a/0x2fb0 fs/jfs/jfs_imap.c:959 jfs_evict_inode+0x329/0x440 fs/jfs/inode.c:156 evict+0x529/0x930 fs/inode.c:705 txUpdateMap+0x825/0x9e0 fs/jfs/jfs_txnmgr.c:2367 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x476/0xb60 fs/jfs/jfs_txnmgr.c:2732 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8d32b290 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x34/0xde0 kernel/rcu/tasks.h:543 1 lock held by rcu_tasks_trace/13: #0: ffffffff8d32bab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x34/0xde0 kernel/rcu/tasks.h:543 1 lock held by khungtaskd/28: #0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6510 5 locks held by kworker/u4:2/33: 2 locks held by jfsCommit/107: #0: ffff88807def8920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x378/0x2fb0 fs/jfs/jfs_imap.c:889 #1: ffff888072c3a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x394/0x2fb0 fs/jfs/jfs_imap.c:894 1 lock held by udevd/3623: 2 locks held by getty/4008: #0: ffff88814d412098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000325e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198 3 locks held by syz-executor/4248: 1 lock held by syz-executor/4490: #0: ffff888079fb00e0 (&type->s_umount_key#64){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:362 3 locks held by syz-executor/4595: 7 locks held by syz-executor/5628: 2 locks held by kworker/u4:19/5764: 7 locks held by syz.0.310/5864: #0: ffffffff8d2072e0 (console_lock){+.+.}-{0:0}, at: do_fb_ioctl+0x5b1/0x850 drivers/video/fbdev/core/fbmem.c:1121 #1: ffff888024da4078 (&fb_info->lock){+.+.}-{3:3}, at: lock_fb_info include/linux/fb.h:637 [inline] #1: ffff888024da4078 (&fb_info->lock){+.+.}-{3:3}, at: do_fb_ioctl+0x5c6/0x850 drivers/video/fbdev/core/fbmem.c:1122 #2: ffff88801d3e7a78 (&helper->lock){+.+.}-{3:3}, at: drm_fb_helper_pan_display+0xb8/0xc00 drivers/gpu/drm/drm_fb_helper.c:1571 #3: ffff888024d981a8 (&dev->master_mutex){+.+.}-{3:3}, at: drm_master_internal_acquire+0x1c/0x70 drivers/gpu/drm/drm_auth.c:457 #4: ffff88801d3e7898 (&client->modeset_mutex){+.+.}-{3:3}, at: drm_client_modeset_commit_locked+0x4c/0x510 drivers/gpu/drm/drm_client_modeset.c:1162 #5: ffffc90003327450 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_client_modeset_commit_atomic+0xd1/0x7d0 drivers/gpu/drm/drm_client_modeset.c:1000 #6: ffff88801d3e60b0 (crtc_ww_class_mutex){+.+.}-{3:3}, at: modeset_lock+0x2b6/0x640 drivers/gpu/drm/drm_modeset_lock.c:314 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Tainted: G W 6.1.122-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1ae/0x3f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xf88/0xfd0 kernel/hung_task.c:377 kthread+0x28d/0x320 kernel/kthread.c:376 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: 5859 Comm: segctord Tainted: G W 6.1.122-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:nilfs_segctor_thread+0x4f0/0x11a0 Code: 48 83 e6 02 31 ff e8 2f 90 2f fe 48 83 e3 02 0f 85 c9 05 00 00 e8 40 8c 2f fe e9 68 06 00 00 e8 36 8c 2f fe 41 be 01 00 00 00 <48> 8b 7c 24 20 e8 36 bd 61 07 ba 18 00 00 00 48 8d bc 24 40 01 00 RSP: 0018:ffffc90003307cc0 EFLAGS: 00000293 RAX: ffffffff835b103a RBX: 0000000000000000 RCX: ffff88802db48000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90003307f00 R08: ffffffff835b0f98 R09: ffffed100a704201 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100e948452 R13: 1ffff1100e948453 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4a7d600020 CR3: 0000000075f90000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295