vold: Build exfatprogs & declare support of exFAT. #1
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Change-Id: If7c98275b4a3ca41c4471755114aecc7ae827664
DennySPB
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Oct 28, 2021
reboot maybe cause a deadlock scenario: 1:init->vdc->vold for abort_fuse blocked on futex hold by another vold binder_x 2:binder_x blocked in binder_ioctl_write_read wait a dead service's response 3:dead service is exiting and schedule a deferred work for put files in binder_vma_close, after put files is completed, the binder_x will eventually wake up 4:kworker execute binder_deferred_work is blocked on fuse request: crash> bt 1707 PID: 1707 TASK: ffffffe366175e80 CPU: 2 COMMAND: "kworker/2:4" #0 [ffffff801b8b3ac0] __switch_to at ffffff962ce88a60 #1 [ffffff801b8b3b10] __schedule at ffffff962e2d3d30 #2 [ffffff801b8b3b70] schedule at ffffff962e2d3ff4 #3 [ffffff801b8b3bc0] __fuse_request_send at ffffff962d20e008 #4 [ffffff801b8b3c00] fuse_request_send at ffffff962d20deac #5 [ffffff801b8b3c30] fuse_flush at ffffff962d217fa4 #6 [ffffff801b8b3c80] filp_close at ffffff962d0bd7b4 #7 [ffffff801b8b3cb0] put_files_struct at ffffff962d0e7658 #8 [ffffff801b8b3d30] binder_deferred_func at ffffff962dc9e60c #9 [ffffff801b8b3d90] process_one_work at ffffff962cee761c #10 [ffffff801b8b3e00] worker_thread at ffffff962cee7a68 #11 [ffffff801b8b3e60] kthread at ffffff962ceecc14 waiting for init abort_fuse suggested by maco, do not acquire lock when abort fuse. Test: reboot stress test Change-Id: If6dd7f5e9c413a16ba047204c33d82d6ff41c4ae Signed-off-by: lijiazi <[email protected]>
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Change-Id: If7c98275b4a3ca41c4471755114aecc7ae827664