bisecting fixing commit since 125222814e7b8f84df767d6ab622aff2a6d2f234
building syzkaller on 8092f30df01f3443831725509ef5a3dae26122c0
testing commit 125222814e7b8f84df767d6ab622aff2a6d2f234
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 5c31291161e4f095beb3259860702d8e1042a8dd5cdde34b95d6c75cc01b619f
run #0: crashed: INFO: rcu detected stall in chrdev_open
run #1: crashed: INFO: rcu detected stall in chrdev_open
run #2: crashed: INFO: rcu detected stall in chrdev_open
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in chrdev_open
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in chrdev_open
run #9: crashed: INFO: rcu detected stall in chrdev_open
run #10: crashed: INFO: rcu detected stall in chrdev_open
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: crashed: INFO: rcu detected stall in corrupted
run #13: crashed: INFO: rcu detected stall in chrdev_open
run #14: crashed: INFO: rcu detected stall in chrdev_open
run #15: crashed: INFO: rcu detected stall in chrdev_open
run #16: crashed: INFO: rcu detected stall in corrupted
run #17: crashed: INFO: rcu detected stall in chrdev_open
run #18: crashed: INFO: rcu detected stall in corrupted
run #19: crashed: no output from test machine
testing current HEAD b172b44fcb1771e083aad806fa96f3f60e2ddfac
testing commit b172b44fcb1771e083aad806fa96f3f60e2ddfac
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 344c58f8d99e2e85bb9222cc60ae6f904cf776e40566fe5c46e077d8afcea46a
run #0: crashed: INFO: rcu detected stall in chrdev_open
run #1: crashed: INFO: rcu detected stall in chrdev_open
run #2: crashed: INFO: rcu detected stall in chrdev_open
run #3: crashed: INFO: rcu detected stall in chrdev_open
run #4: crashed: INFO: rcu detected stall in chrdev_open
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in chrdev_open
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in chrdev_open
run #9: crashed: no output from test machine
revisions tested: 2, total time: 37m6.628387285s (build: 20m43.97843749s, test: 15m53.026962926s)
the crash still happens on HEAD
commit msg: Linux 4.19.206
crash: no output from test machine