bisecting fixing commit since 5ff2756afde08b266fbb673849899fec694f39f1 building syzkaller on 858ea628800647d5e5b68b11441e42b8ef5652c1 testing commit 5ff2756afde08b266fbb673849899fec694f39f1 with gcc (GCC) 10.2.1 20210217 kernel signature: 0a38b53a08b0fe5550c457ad46d5f7a7a1bf11ee47fec7bfc07102b7a69305d3 all runs: crashed: WARNING in ar5523_submit_rx_cmd/usb_submit_urb testing current HEAD de5540965853e514a85d3b775e9049deb85a2ff3 testing commit de5540965853e514a85d3b775e9049deb85a2ff3 with gcc (GCC) 10.2.1 20210217 kernel signature: 36cdf91d835bf782b471acddb58e1aa33106a566eff43cade21e3cdde263d27a run #0: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #1: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #2: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0) run #3: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #4: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0) run #5: boot failed: possible deadlock in fs_reclaim_acquire run #6: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0) run #7: boot failed: BUG: sleeping function called from invalid context in stack_depot_save run #8: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0) run #9: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0) revisions tested: 2, total time: 29m58.938538445s (build: 14m54.812178781s, test: 14m26.829779462s) bisection is inconclusive, the first good commit could be any of: 5ff2756afde08b266fbb673849899fec694f39f1 de5540965853e514a85d3b775e9049deb85a2ff3