bisecting cause commit starting from 7ada90eb9c7ae4a8eb066f8e9b4d80122f0363db
building syzkaller on 85f267515d439552478cbfcdee7e4d0609ff7310
testing commit 7ada90eb9c7ae4a8eb066f8e9b4d80122f0363db with gcc (GCC) 8.1.0
kernel signature: 96282e167ab1c8d1e3b46d6ab529e3a8486eb0bd
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v5.4
testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0
kernel signature: 33dfa7f66dfdc6a1234be6e8c017363b95624b6f
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v5.3
testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0
kernel signature: 622a6a5fb6ccea22cc111b85b933cdb50cf93179
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v5.2
testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0
kernel signature: 4b333682e47a8a6cefdc932ae064cb895e3fd92f
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v5.1
testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0
kernel signature: 17914f1c87d71e9219a6f1fffa0eae77661aa927
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v5.0
testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0
kernel signature: f85c68b0b13bec2c82caf4cc1a3af125f2491cab
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v4.20
testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0
kernel signature: 33170339d2c5549240fba902d44a9d228501fc82
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v4.19
testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0
kernel signature: 7e0b82fced50a0853884673b57dabf43839e0ca5
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v4.18
testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0
kernel signature: 9b916b7aa4b97184e88325bdd56f840dd28c95ea
all runs: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
testing release v4.17
testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0
kernel signature: e7d533c9ea6faae46737e69c78786fbf4df37653
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: INFO: task hung in tty_ldisc_hangup
run #3: crashed: INFO: task hung in paste_selection
run #4: crashed: INFO: task hung in tty_ldisc_hangup
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in paste_selection
run #7: crashed: INFO: task hung in paste_selection
run #8: crashed: INFO: task hung in paste_selection
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.16
testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0
kernel signature: eaca40f0a92dfe353da978612050d2a2f7a1d74c
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: INFO: task hung in tty_ldisc_hangup
run #4: crashed: INFO: task hung in tty_ldisc_hangup
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in paste_selection
run #7: crashed: INFO: task hung in tty_ldisc_hangup
run #8: crashed: INFO: task hung in tty_ldisc_hangup
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.15
testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0
kernel signature: bab5b1d686a2c1ed2f8f25fc8fa02d4a92881c4c
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: INFO: task hung in tty_ldisc_hangup
run #4: crashed: INFO: task hung in tty_ldisc_hangup
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in tty_ldisc_hangup
run #7: crashed: INFO: task hung in tty_ldisc_hangup
run #8: crashed: INFO: task hung in tty_ldisc_hangup
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.14
testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0
kernel signature: c48a0086b8ebc6224a7bece33af7a2828e9db437
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: INFO: task hung in tty_ldisc_hangup
run #3: crashed: INFO: task hung in tty_ldisc_hangup
run #4: crashed: INFO: task hung in paste_selection
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in tty_ldisc_hangup
run #7: crashed: INFO: task hung in paste_selection
run #8: crashed: INFO: task hung in paste_selection
run #9: crashed: INFO: task hung in paste_selection
testing release v4.13
testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 with gcc (GCC) 8.1.0
kernel signature: 64478dab8725767eba9c2c9329231feb2d144962
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #4: crashed: INFO: task hung in tty_ldisc_hangup
run #5: crashed: INFO: task hung in paste_selection
run #6: crashed: INFO: task hung in tty_ldisc_hangup
run #7: crashed: INFO: task hung in tty_ldisc_hangup
run #8: crashed: INFO: task hung in tty_ldisc_hangup
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.12
testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c with gcc (GCC) 8.1.0
kernel signature: 4923846d3bbfb3dd4687a39e6dfd37df021b9c39
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: INFO: task hung in paste_selection
run #4: crashed: INFO: task hung in paste_selection
run #5: crashed: INFO: task hung in paste_selection
run #6: crashed: INFO: task hung in paste_selection
run #7: crashed: INFO: task hung in paste_selection
run #8: crashed: INFO: task hung in paste_selection
run #9: crashed: INFO: task hung in paste_selection
testing release v4.11
testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 with gcc (GCC) 7.3.0
kernel signature: 9fdbea7eeec0051f7fb8ebd9e7ab17819269ad34
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: INFO: task hung in tty_ldisc_hangup
run #4: crashed: INFO: task hung in paste_selection
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in tty_ldisc_hangup
run #7: crashed: INFO: task hung in tty_ldisc_hangup
run #8: crashed: INFO: task hung in tty_ldisc_hangup
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.10
testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd with gcc (GCC) 5.5.0
kernel signature: 0e5e5648a774d377fe0d4e0da274b603711a554e
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #4: crashed: INFO: task hung in tty_ldisc_hangup
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in tty_ldisc_hangup
run #7: crashed: INFO: task hung in tty_ldisc_hangup
run #8: crashed: INFO: task hung in paste_selection
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.9
testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 with gcc (GCC) 5.5.0
kernel signature: 1c0a801bbbf7ac0ba78fcb88ef12994cb2e11221
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: INFO: task hung in tty_ldisc_hangup
run #4: crashed: INFO: task hung in tty_ldisc_hangup
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in tty_ldisc_hangup
run #7: crashed: INFO: task hung in tty_ldisc_hangup
run #8: crashed: INFO: task hung in tty_ldisc_hangup
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.8
testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0
kernel signature: b7f09011f08e35c4e512b2f27d132cb6fc455f72
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free in n_tty_receive_buf_common at addr ADDR
run #2: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #3: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #4: crashed: INFO: task hung in paste_selection
run #5: crashed: INFO: task hung in paste_selection
run #6: crashed: INFO: task hung in paste_selection
run #7: crashed: INFO: task hung in paste_selection
run #8: crashed: INFO: task hung in paste_selection
run #9: crashed: INFO: task hung in paste_selection
testing release v4.7
testing commit 523d939ef98fd712632d93a5a2b588e477a7565e with gcc (GCC) 5.5.0
kernel signature: dff578fef11ce644812f1712197803d595015852
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: INFO: task hung in paste_selection
run #2: crashed: INFO: task hung in paste_selection
run #3: crashed: INFO: task hung in paste_selection
run #4: crashed: INFO: task hung in paste_selection
run #5: crashed: INFO: task hung in paste_selection
run #6: crashed: INFO: task hung in paste_selection
run #7: crashed: INFO: task hung in paste_selection
run #8: crashed: INFO: task hung in paste_selection
run #9: crashed: INFO: task hung in paste_selection
testing release v4.6
testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a with gcc (GCC) 5.5.0
kernel signature: 97337844003b153f53814a3aec926cc694b66a29
run #0: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #1: crashed: KASAN: use-after-free Read in n_tty_receive_buf_common
run #2: crashed: INFO: task hung in paste_selection
run #3: crashed: INFO: task hung in paste_selection
run #4: crashed: INFO: task hung in paste_selection
run #5: crashed: INFO: task hung in paste_selection
run #6: crashed: INFO: task hung in paste_selection
run #7: crashed: INFO: task hung in paste_selection
run #8: crashed: INFO: task hung in paste_selection
run #9: crashed: INFO: task hung in paste_selection
testing release v4.5
testing commit b562e44f507e863c6792946e4e1b1449fbbac85d with gcc (GCC) 5.5.0
kernel signature: a88b100a02e6ea4d777de9b146f51a48f29202aa
all runs: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.4
testing commit afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc with gcc (GCC) 5.5.0
kernel signature: d4cea87d0c129b49a6c58eaf24ad203a384f8232
all runs: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.3
testing commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861 with gcc (GCC) 5.5.0
kernel signature: 5877cb9c9b857aae4dd0611a5749eadf31e457b1
all runs: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.2
testing commit 64291f7db5bd8150a74ad2036f1037e6a0428df2 with gcc (GCC) 5.5.0
kernel signature: dc009802a656014eff045e3ab42777ac98c9d2a9
run #0: crashed: INFO: task hung in tty_ldisc_hangup
run #1: crashed: INFO: task hung in tty_ldisc_hangup
run #2: crashed: INFO: task hung in corrupted
run #3: crashed: INFO: task hung in tty_ldisc_hangup
run #4: crashed: INFO: task hung in tty_ldisc_hangup
run #5: crashed: INFO: task hung in tty_ldisc_hangup
run #6: crashed: INFO: task hung in tty_ldisc_hangup
run #7: crashed: INFO: task hung in tty_ldisc_hangup
run #8: crashed: INFO: task hung in tty_ldisc_hangup
run #9: crashed: INFO: task hung in tty_ldisc_hangup
testing release v4.1
testing commit b953c0d234bc72e8489d3bf51a276c5c4ec85345 with gcc (GCC) 5.5.0
kernel signature: 5684d2e55084e212a6ec3847efb3c0a392d989ac
run #0: crashed: WARNING in corrupted
run #1: crashed: WARNING in n_tty_receive_buf_common
run #2: crashed: WARNING in corrupted
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
revisions tested: 26, total time: 4h40m13.437180377s (build: 2h5m45.741615644s, test: 2h31m28.260720161s)
the crash already happened on the oldest tested release
commit msg: Linux 4.1
crash: no output from test machine