https://bugzilla.kernel.org/show_bug.cgi?id=196223 --- Comment #4 from Marta Löfstedt (marta.lofstedt@xxxxxxxxx) --- (In reply to Theodore Tso from comment #3) > Since this commit has been implicated in another problem (with quite > different symptoms) it's a bit of a long shot, but since you have a quick > and easy reproduction, can you try reverting 81378da64de6: "jbd2: mark the > transaction context with the scope GFP_NOFS context" and see if that makes > the hang go away? > > Failing that, I might have to ask you to do a bisect on the ext4 patches > added during the 4.12 merge window. Doesn't help: [ 846.830596] INFO: task systemd:1 blocked for more than 120 seconds. [ 846.830705] Tainted: G U W 4.12.0-rc7-next-20170630+ #3 [ 846.830774] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 846.830854] systemd D 0 1 0 0x00000000 [ 846.830860] Call Trace: [ 846.830873] __schedule+0x3c7/0x830 [ 846.830880] ? bit_wait+0x60/0x60 [ 846.830884] schedule+0x36/0x80 [ 846.830889] io_schedule+0x16/0x40 [ 846.830893] bit_wait_io+0x11/0x60 [ 846.830898] __wait_on_bit+0x58/0x90 [ 846.830903] ? submit_bio+0x73/0x150 [ 846.830908] out_of_line_wait_on_bit+0x8e/0xb0 [ 846.830914] ? bit_waitqueue+0x40/0x40 [ 846.830920] __wait_on_buffer+0x32/0x40 [ 846.830926] __ext4_get_inode_loc+0x1b3/0x400 [ 846.830932] ext4_iget+0x92/0xbc0 [ 846.830938] ext4_iget_normal+0x2f/0x40 [ 846.830942] ext4_lookup+0xea/0x270 [ 846.830946] lookup_slow+0xa5/0x160 [ 846.830951] walk_component+0x1bf/0x370 [ 846.830954] ? path_init+0x1e4/0x3a0 [ 846.830958] path_lookupat+0x73/0x220 [ 846.830962] filename_lookup+0xb8/0x1a0 [ 846.830966] ? __d_alloc+0x27/0x1d0 [ 846.830972] ? __check_object_size+0xb3/0x190 [ 846.830977] ? strncpy_from_user+0x4d/0x170 [ 846.830981] user_path_at_empty+0x36/0x40 [ 846.830985] ? user_path_at_empty+0x36/0x40 [ 846.830990] vfs_statx+0x83/0xf0 [ 846.830995] SYSC_newstat+0x3d/0x70 [ 846.831001] ? ep_read_events_proc+0xd0/0xd0 [ 846.831006] SyS_newstat+0xe/0x10 [ 846.831010] entry_SYSCALL_64_fastpath+0x1e/0xa9 -- You are receiving this mail because: You are watching the assignee of the bug.
