bisecting cause commit starting from 7ada90eb9c7ae4a8eb066f8e9b4d80122f0363db
building syzkaller on 85f267515d439552478cbfcdee7e4d0609ff7310
testing commit 7ada90eb9c7ae4a8eb066f8e9b4d80122f0363db with gcc (GCC) 8.1.0
kernel signature: 6f71b390024fc546d5de450d56425996da337e7d
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0
kernel signature: eddf5fbc7d55d12fd2f7c0045511ad41d368ac53
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0
kernel signature: 78d532fc36976b8ac45ed718a34b361c30c1c068
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0
kernel signature: 52f836638a3d1276ee3b41fe9e5a9443c793c5ec
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0
kernel signature: fff99c96c79e211f1f296fe54adc3483517ebfa8
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0
kernel signature: 53ea08bc15b2a35e30520fc0ae6f3fb0691b6da4
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0
kernel signature: 245c161be48e8ebfdd32b8578bdaea4ef05bd639
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in corrupted
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0
kernel signature: 59184f7b3c09aae220d30f791b1648a2a553c6b2
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0
kernel signature: 897fb26655bbc37e8f03ab11809bdf9cbfddf4da
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0
kernel signature: 410cced917a393ef313e0abda8aa17b23911a7c9
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0
kernel signature: 76803db8d3386b1e0342724a5dc1d8213e2b4c30
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0
kernel signature: 53e0b62bae7d1c375caae50cdd56c812bbcea901
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0
kernel signature: f322067c91cfb9742a52cc97c27adbadf51aae7d
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0
kernel signature: 06e8284a34b422f12345020f3d87fdfdf6809ac9
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.12
testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0
kernel signature: 6e3c9a9327525edd04d00b80f672b55ec7f32404
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.11
testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0
kernel signature: c2637386941282905ff1f55512af88a2aca2b9ae
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.10
testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0
kernel signature: 5505a43e071567e3b3f596ef70e35872d883d9a6
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.9
testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0
kernel signature: eff109400a89564e465511047f2480b3583ef8f4
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.8
testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0
kernel signature: c6649a15e5a2f787ffc4d524751f0a5575369a3e
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #2: crashed: BUG: unable to handle kernel
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.7
testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0
kernel signature: 00ce0041413f81c3f2075ea9e46cf01099b168da
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #6: crashed: BUG: unable to handle kernel
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.6
testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0
kernel signature: f248e6b5b00d7e4a242017761c5865fd10ea69b6
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #1: crashed: BUG: unable to handle kernel
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.5
testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0
kernel signature: 35f44990016af7b116e4544b549f2753e49241bc
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #5: crashed: BUG: unable to handle kernel
run #6: crashed: BUG: unable to handle kernel
run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #9: crashed: BUG: unable to handle kernel
testing release v4.4
testing commit afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc with gcc (GCC) 5.5.0
kernel signature: 64d90f7bc84010ebb972e2a23532dc120dc971ce
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
testing release v4.3
testing commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861 with gcc (GCC) 5.5.0
kernel signature: 06d73b6b041981ead62d62567ace716608d31517
run #0: crashed: BUG: unable to handle kernel
run #1: crashed: BUG: unable to handle kernel
run #2: crashed: no output from test machine
run #3: crashed: no output from test machine
run #4: crashed: no output from test machine
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
testing release v4.2
testing commit 64291f7db5bd8150a74ad2036f1037e6a0428df2 with gcc (GCC) 5.5.0
kernel signature: 51790fb631db6a1824ff5ccce7453f981254578a
run #0: crashed: BUG: unable to handle kernel
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #3: crashed: BUG: unable to handle kernel
run #4: crashed: no output from test machine
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
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: b36540ef0ba4f8160b7ad9ab97a4dc0372ef7451
run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in mem_serial_out
run #4: crashed: no output from test machine
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
revisions tested: 26, total time: 3h42m49.083886578s (build: 2h1m4.400471007s, test: 1h39m12.353919865s)
the crash already happened on the oldest tested release
commit msg: Linux 4.1
crash: no output from test machine