bisecting cause commit starting from 8f8972a3127ff46df62ae30057d29606968ec4aa building syzkaller on 0342f8c7bc656ea8ee3c45e49edeb4ee9cc12cce testing commit 8f8972a3127ff46df62ae30057d29606968ec4aa with gcc (GCC) 8.1.0 kernel signature: 134c82defc4fcb30771d3a9f3c69da27ceb7b587fc1545e8276beb946b0a8231 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: 7418b173addc18f301353f10789c8ad8a05c23ed131822dd20642a2c27084fe8 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: 7065092662dd1de801525ea5cb26e5f0f05fd7f0328059ae31cd37a847249db1 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: 2de8f9ef2ed35da45ad5287309a08b5bfb5b09f4d46a201a72ece5b0e5c148b5 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: 591603eb3fce6b851124b83b647282d9ef4463936482aa7adde4799928073f2c all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: 52b8b5d6a38a26ad2447b4e8255d122f0fae92a87d7935a44d21150294cb977c all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: 5be4faf55ce23b1ed6c2d26e7c0df71dd9a639bc63b691afd0e97253ddfb97af all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: ee7e016a6a1b0ba2623b5dc94e1f1f6e00ff7cc5825edc7adac8e21b02b2f853 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: 4e7856e0f9f2f83d58242fe829d93aea74edd0a81ca985c3c877ca2cee0b1ae4 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: ee5326f64e98acd3c7ca437a3cc78db063b7cef246177291bde878f05a83f0bc all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: 7580f49f71d415644bd7b651236fc2faee88fc3ba2b9154f2a6a6ca58992fd49 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: 01b4c6ad26283b9028bb17daabd9262bacd5cf57c5de8a22a9088ab90a4dd047 all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: 29067a38cb40d8aedaca352628eb088d687f6863b35b27b03bc78fcb4cea906d all runs: crashed: BUG: unable to handle kernel paging request in do_con_trol testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0 kernel signature: 2876610e394f70cea1a163d5288c53d4cc2ab751ea40989feaeaf9ce28750015 all runs: crashed: general protection fault in do_con_trol testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0 kernel signature: bc06d31e8499f0a91fff4802acd5700d2ce0bfdd9c65dae6d73013a61f7eb97c all runs: crashed: BUG: sleeping function called from invalid context in tap_get_minor testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0 kernel signature: ac44af3a9444d670c4d782f48d2df170da3ac32a5ffc9c3834731b3a2689bedb all runs: crashed: BUG: sleeping function called from invalid context in tap_get_minor testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0 kernel signature: 949c235c5ba8cb193b22a44fa7ca7db1ca4c96d8eeae1d592311ee3b77fcca30 all runs: crashed: general protection fault in do_con_trol testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0 kernel signature: 736db732353338e4fd79c59983435d2801b5dfe3de9eb45457ea618b752e70c9 all runs: crashed: general protection fault in do_con_trol testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 kernel signature: 3135a93d16bd99bb55608c6ebed9add42839b7018c21f841d00b9192da6711b6 all runs: crashed: general protection fault in do_con_trol testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0 kernel signature: fe02dcb76d68a91c1fbb13084ed68af817081117a8dd75c6f78622f54f3a51c6 all runs: crashed: general protection fault in do_con_trol testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0 kernel signature: 4c3f1c7039878f14850421103e0434d27b1c4b1a4c34ae4c051d2ced4671716e failed: failed to create VM pool: failed to create GCE image: create image operation failed: &{Code:INTERNAL_ERROR Location: Message:Internal error. Please try again or contact Google Support. (Code: '3767973585433447190') ForceSendFields:[] NullFields:[]}. revisions tested: 21, total time: 3h18m14.471671458s (build: 1h50m22.180172907s, test: 1h25m35.39354972s) the crash already happened on the oldest tested release commit msg: Linux 4.7 crash: general protection fault in do_con_trol IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 8217 Comm: syz-executor.1 Not tainted 4.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8800b05d4540 ti: ffff8800aadb0000 task.ti: ffff8800aadb0000 RIP: 0010:[] [] scr_memsetw include/linux/vt_buffer.h:31 [inline] RIP: 0010:[] [] csi_K drivers/tty/vt/vt.c:1226 [inline] RIP: 0010:[] [] do_con_trol+0x42c6/0x5a40 drivers/tty/vt/vt.c:2014 RSP: 0018:ffff8800aadb77b8 EFLAGS: 00010203 RAX: 0000000020000001 RBX: 0000000000000001 RCX: 0000000100000010 RDX: 1ffff10024b61e17 RSI: dffffc0000000000 RDI: 000000010000000e RBP: ffff8800aadb7918 R08: 0000000000000720 R09: dffffc0000000000 R10: 0000000000000011 R11: 0000000000000001 R12: ffff880125b0ed00 R13: 0000000000000000 R14: 000000010000000e R15: 1ffff100155b6efe FS: 00007fb4b6969700(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000758090 CR3: 0000000127796000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff81484637 ffff8800aadb7970 ffffffff8143e043 00007fb4b6968c78 ffff8800b05d4540 00007fb4b6968c78 ffff8800b05d4540 0000000041b58ab3 ffffffff86b9d468 ffffffff83037da0 ffff8800aadb78c0 0000000000000082 Call Trace: [] do_con_write.part.22+0x487/0x1950 drivers/tty/vt/vt.c:2433 [] do_con_write drivers/tty/vt/vt.c:2791 [inline] [] con_write+0x76/0x90 drivers/tty/vt/vt.c:2787 [] process_output_block drivers/tty/n_tty.c:581 [inline] [] n_tty_write+0x4f0/0x10b0 drivers/tty/n_tty.c:2304 [] do_tty_write drivers/tty/tty_io.c:1172 [inline] [] tty_write+0x455/0x800 drivers/tty/tty_io.c:1256 [] __vfs_write+0xdb/0x740 fs/read_write.c:510 [] vfs_write+0x147/0x4a0 fs/read_write.c:560 [] SYSC_write fs/read_write.c:607 [inline] [] SyS_write+0xcb/0x1a0 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x23/0xc1 Code: 84 24 b8 03 00 00 41 d1 ed 4c 89 f7 48 be 00 00 00 00 00 fc ff df 41 83 ed 01 41 83 fd ff 74 2e 48 8d 4f 02 48 89 f8 48 c1 e8 03 <0f> b6 14 30 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 RIP [] scr_memsetw include/linux/vt_buffer.h:31 [inline] RIP [] csi_K drivers/tty/vt/vt.c:1226 [inline] RIP [] do_con_trol+0x42c6/0x5a40 drivers/tty/vt/vt.c:2014 RSP ---[ end trace 973353b726f57d17 ]---