bisecting cause commit starting from eea2d5da29e396b6cc1fb35e36bcbf5f57731015 building syzkaller on 85f267515d439552478cbfcdee7e4d0609ff7310 testing commit eea2d5da29e396b6cc1fb35e36bcbf5f57731015 with gcc (GCC) 8.1.0 kernel signature: e8e0be8bd07a76cf34ea85a0ad25d86e235c0d3f all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: 066a2ba876359e4edde054e06194af335a27adf4 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: 0430efabd2496159b3fc383d6d802a7953c2012b all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: 6d55a49dcc4783324b782f3f72f931834898a768 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: aaf22d209a26e6f86b78c0918199618e8dcb2576 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: be181fe5e6910da32d2e2eb4e7b2a469e515fd6b all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: f7a37654094baead605c6809552cf8008eeee9c0 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: 86ea95c9ce7bcee784259b996bdedd1ad9a12ee0 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: aed690adecc76e0d293d59924da32f700658d303 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: bbf19662d94d2565cac5d173158ff271433cc87a run #0: crashed: BUG: sleeping function called from invalid context in tpk_write run #1: crashed: BUG: sleeping function called from invalid context in tpk_write run #2: crashed: BUG: sleeping function called from invalid context in tpk_write run #3: crashed: BUG: sleeping function called from invalid context in tpk_write run #4: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #5: crashed: BUG: sleeping function called from invalid context in tpk_write run #6: crashed: BUG: sleeping function called from invalid context in tpk_write run #7: crashed: BUG: sleeping function called from invalid context in tpk_write run #8: crashed: BUG: sleeping function called from invalid context in tpk_write run #9: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: f3fe3acbe6850807d779c9137aa4a77903206d1a all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: 5bb8f8e3a1a71abf2f5ec5fce14dcca1355fcd97 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: 49cbb9085714d15afde0bc73fbd13aa353540b77 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 kernel signature: a00f22680093a411f68baaab4a4853c0ae75d63d all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 kernel signature: a5550549155a138a750afe65d4a4f99ff9429f6c all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 kernel signature: 61690121d2955ae259bf53756ab02e99c5d28652 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 kernel signature: c279779e8e0031982791101b17e9345dcaa2339a all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 kernel signature: 72b92008abc0f431b70dad3202410877ff5244a0 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 kernel signature: 821c52b1319999c3433ca14af7a2d3730abd9a59 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 kernel signature: c4b1650c56a2641e8040a6c5659a0963de8dce05 all runs: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 kernel signature: c3392dfbb9d7f387b4644747c3dbe603939e0671 run #0: crashed: KASAN: use-after-free Read in hci_uart_flush run #1: crashed: KASAN: use-after-free Read in hci_uart_flush run #2: crashed: KASAN: use-after-free Read in hci_uart_flush run #3: crashed: KASAN: use-after-free Read in hci_uart_flush run #4: crashed: BUG: sleeping function called from invalid context in tpk_write run #5: crashed: KASAN: use-after-free Read in hci_uart_flush run #6: crashed: BUG: sleeping function called from invalid context in tpk_write run #7: crashed: BUG: sleeping function called from invalid context in tpk_write run #8: crashed: KASAN: use-after-free Read in hci_uart_flush run #9: crashed: BUG: sleeping function called from invalid context in tpk_write testing release v4.5 testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0 kernel signature: 3447bec64dc02ee9aacd2d2ddc1969e3e4a823e1 run #0: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #1: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #2: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #3: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #4: crashed: BUG: sleeping function called from invalid context in tpk_write run #5: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #6: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #7: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #8: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #9: crashed: WARNING: ODEBUG bug in hci_uart_tty_close testing release v4.4 testing commit afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc with gcc (GCC) 5.5.0 kernel signature: d1230de1055fb940fc6f46eed644e3175d2b5f27 all runs: crashed: WARNING: ODEBUG bug in hci_uart_tty_close testing release v4.3 testing commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861 with gcc (GCC) 5.5.0 kernel signature: 8dfab2efac521cab65ffe5ede8143251ab1ca1c9 run #0: crashed: WARNING: ODEBUG bug in netdev_freemem run #1: crashed: WARNING: ODEBUG bug in netdev_freemem run #2: crashed: WARNING: ODEBUG bug in netdev_freemem run #3: crashed: WARNING: ODEBUG bug in netdev_freemem run #4: crashed: WARNING: ODEBUG bug in corrupted run #5: crashed: WARNING: ODEBUG bug in corrupted run #6: crashed: WARNING: ODEBUG bug in netdev_freemem run #7: crashed: WARNING: ODEBUG bug in netdev_freemem run #8: crashed: WARNING: ODEBUG bug in netdev_freemem run #9: crashed: WARNING: ODEBUG bug in netdev_freemem testing release v4.2 testing commit 64291f7db5bd8150a74ad2036f1037e6a0428df2 with gcc (GCC) 5.5.0 kernel signature: 110e35537acf406df340d3a51b151ad1ab0842f0 run #0: crashed: WARNING: ODEBUG bug in netdev_freemem run #1: crashed: WARNING: ODEBUG bug in netdev_freemem run #2: crashed: WARNING: ODEBUG bug in netdev_freemem run #3: crashed: WARNING: ODEBUG bug in netdev_freemem run #4: crashed: WARNING: ODEBUG bug in netdev_freemem run #5: crashed: WARNING: ODEBUG bug in netdev_freemem run #6: crashed: WARNING: ODEBUG bug in netdev_freemem run #7: crashed: WARNING: ODEBUG bug in netdev_freemem run #8: crashed: no output from test machine run #9: crashed: no output from test machine testing release v4.1 testing commit b953c0d234bc72e8489d3bf51a276c5c4ec85345 with gcc (GCC) 5.5.0 kernel signature: c2eb104189d9e0837b9fffbf0e485e2c0b34f16a run #0: crashed: WARNING: ODEBUG bug in netdev_freemem run #1: crashed: WARNING: ODEBUG bug in corrupted run #2: crashed: WARNING: ODEBUG bug in netdev_freemem run #3: crashed: WARNING: ODEBUG bug in netdev_freemem run #4: crashed: WARNING: ODEBUG bug in netdev_freemem run #5: crashed: WARNING: ODEBUG bug in netdev_freemem run #6: crashed: WARNING: ODEBUG bug in netdev_freemem run #7: crashed: WARNING: ODEBUG bug in netdev_freemem run #8: crashed: WARNING: ODEBUG bug in netdev_freemem run #9: crashed: no output from test machine revisions tested: 26, total time: 3h39m10.583507241s (build: 2h1m13.743211237s, test: 1h34m45.613867578s) the crash already happened on the oldest tested release commit msg: Linux 4.1 crash: no output from test machine