bisecting cause commit starting from 7c60610d476766e128cc4284bb6349732cbd6606 building syzkaller on 2489ab887a86e8b1b253aef742e365a606db3a4f testing commit 7c60610d476766e128cc4284bb6349732cbd6606 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 2394ae3fde84f4dc9ddbcedcfae097754dfca5e9e5152898a154cd5e15d8efba run #0: crashed: KASAN: use-after-free Read in h4_recv_buf run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in h4_recv_buf run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in h4_recv_buf run #6: crashed: KASAN: use-after-free Read in skb_dequeue run #7: crashed: KASAN: invalid-free in skb_release_data run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf run #10: crashed: KASAN: use-after-free Read in h4_recv_buf run #11: crashed: KASAN: use-after-free Read in h4_recv_buf run #12: crashed: KASAN: use-after-free Read in skb_dequeue run #13: crashed: KASAN: use-after-free Read in skb_dequeue run #14: crashed: KASAN: use-after-free Read in h4_recv_buf run #15: crashed: KASAN: use-after-free Read in h4_recv_buf run #16: crashed: KASAN: use-after-free Read in h4_recv_buf run #17: crashed: KASAN: use-after-free Read in h4_recv_buf run #18: crashed: KASAN: use-after-free Read in h4_recv_buf run #19: crashed: KASAN: use-after-free Read in skb_dequeue testing release v5.13 testing commit 62fb9874f5da54fdb243003b386128037319b219 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: eaab50170f966c8b3eb39852b91e95d9bc7e454d96827a490e5a435720d1ffbe all runs: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: a2c67d0aa4cd9031fb2dccc0e9429d13c38be324308c26aa1ef6b084265ddb79 run #0: crashed: KASAN: use-after-free Read in h4_recv_buf run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in skb_dequeue run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in h4_recv_buf run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in skb_dequeue run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in skb_dequeue testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 760afc9eb3d03287b34ea942b7a411382f5645571be3e022de43df2d69784b74 all runs: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: ed87a01106570e960457a093defc61da2463f8df499a22d92a19e05b34bca040 run #0: crashed: KASAN: use-after-free Read in h4_recv_buf run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in h4_recv_buf run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in h4_recv_buf run #6: crashed: KASAN: use-after-free Read in skb_dequeue run #7: crashed: KASAN: use-after-free Read in h4_recv_buf run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: a6ff38e82dd9e7b72f8594f21d4456e9f130fed2d0baffe8f9a1ac831a8846b8 all runs: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 148af9454d2419d8c534f359dc0ada77e2a0b73e26499bd1d569517b33bb77e1 run #0: crashed: KASAN: use-after-free Read in skb_dequeue run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in h4_recv_buf run #3: crashed: KASAN: use-after-free Read in skb_dequeue run #4: crashed: KASAN: use-after-free Read in skb_dequeue run #5: crashed: KASAN: use-after-free Read in skb_dequeue run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in skb_dequeue run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 compiler: gcc version 8.4.1 20210217 (GCC), GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: c39813ac1b4cf9ee17cd9581d29834c9312d7a9e2d37c5149682cd29e326d445 run #0: crashed: KASAN: use-after-free Read in skb_dequeue run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in h4_recv_buf run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in h4_recv_buf run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in h4_recv_buf run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 65e9f41c1707ffe281e68adea77024db743fc3aec52e15a3092851b775aa1091 run #0: crashed: KASAN: use-after-free Read in skb_dequeue run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in h4_recv_buf run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in h4_recv_buf run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in h4_recv_buf run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: df229a265ef77d7ea04c00e82025c3f1c0476396510a270bc6ec4e905f5dd17e run #0: crashed: KASAN: use-after-free Read in h4_recv_buf run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in h4_recv_buf run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in skb_dequeue run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in h4_recv_buf run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 4db262e20e001154554aacba8ee069cf005e1d0d472bd35a6ff08601ed7ef2f2 run #0: crashed: KASAN: use-after-free Read in skb_dequeue run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in skb_dequeue run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in h4_recv_buf run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in h4_recv_buf run #8: crashed: KASAN: use-after-free Read in skb_dequeue run #9: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 8a03cb69477372e7c3f6c0fee23e5ea1b68880d5ca37439f59113cf3c4eda96e run #0: crashed: KASAN: use-after-free Read in skb_dequeue run #1: crashed: KASAN: use-after-free Read in skb_dequeue run #2: crashed: KASAN: use-after-free Read in skb_dequeue run #3: crashed: KASAN: use-after-free Read in skb_dequeue run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK reproducer seems to be flaky testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: a63def1637c68d4b2393eca6fa64f291c241df7444f98d045fce92c45e3140a6 run #0: crashed: KASAN: use-after-free Read in skb_dequeue run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in h4_recv_buf run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in skb_dequeue run #5: crashed: KASAN: use-after-free Read in skb_dequeue run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in h4_recv_buf run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf run #10: crashed: KASAN: use-after-free Read in h4_recv_buf run #11: crashed: KASAN: use-after-free Read in h4_recv_buf run #12: crashed: KASAN: use-after-free Read in skb_dequeue run #13: crashed: KASAN: use-after-free Read in hci_recv_frame run #14: crashed: KASAN: use-after-free Read in h4_recv_buf run #15: crashed: KASAN: use-after-free Read in h4_recv_buf run #16: crashed: KASAN: use-after-free Read in skb_dequeue run #17: crashed: KASAN: use-after-free Read in skb_dequeue run #18: crashed: KASAN: use-after-free Read in h4_recv_buf run #19: crashed: KASAN: use-after-free Read in h4_recv_buf testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: f8efdfe78b77cd25d04aab4225a16b81c92c36c009eef26f6201701b40898542 run #0: crashed: KASAN: use-after-free Read in h4_recv_buf run #1: crashed: KASAN: use-after-free Read in h4_recv_buf run #2: crashed: KASAN: use-after-free Read in skb_dequeue run #3: crashed: KASAN: use-after-free Read in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in skb_dequeue run #6: crashed: KASAN: use-after-free Read in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in skb_dequeue run #8: crashed: KASAN: use-after-free Read in h4_recv_buf run #9: crashed: KASAN: use-after-free Read in h4_recv_buf run #10: crashed: KASAN: use-after-free Read in h4_recv_buf run #11: crashed: KASAN: use-after-free Read in skb_dequeue run #12: crashed: KASAN: use-after-free Read in skb_dequeue run #13: crashed: KASAN: use-after-free Read in h4_recv_buf run #14: crashed: KASAN: use-after-free Read in skb_dequeue run #15: crashed: KASAN: use-after-free Read in h4_recv_buf run #16: crashed: KASAN: use-after-free Read in h4_recv_buf run #17: crashed: KASAN: use-after-free Read in skb_dequeue run #18: crashed: KASAN: use-after-free Read in skb_dequeue run #19: OK testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 8febb2553a8c0a5b6ddbcecc9d82d1b651fdece6c7b63653a085e30edb3aa2ec run #0: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #1: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #2: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #3: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #4: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #5: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #6: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #7: crashed: KASAN: use-after-free Read in h4_recv_buf run #8: crashed: KASAN: use-after-free Read in skb_dequeue run #9: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #10: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #11: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #12: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #13: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #14: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #15: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #16: crashed: BUG: unable to handle kernel paging request in corrupted run #17: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #18: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #19: crashed: BUG: unable to handle kernel paging request in h4_recv_buf testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 368133a3a4f5b1c7545c473f9bef8fff84b6b10336f3b82d0373355c4e042f45 run #0: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #1: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #2: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #3: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #4: crashed: KASAN: use-after-free Read in h4_recv_buf run #5: crashed: KASAN: use-after-free Read in h4_recv_buf run #6: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #7: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #8: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #9: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #10: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #11: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #12: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #13: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #14: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #15: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #16: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #17: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #18: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #19: crashed: BUG: unable to handle kernel paging request in h4_recv_buf testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 0a2a1ddc7213bac9138f0c835ebd3427e83eba3f3d78b4b479fdfa007489c38e all runs: crashed: BUG: unable to handle kernel paging request in h4_recv_buf testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: dd6619fe51db9398618d6aacd315dd4de682240ab565767cff12f30f1727f5da run #0: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #1: crashed: KASAN: use-after-free Read in skb_dequeue run #2: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #3: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #4: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #5: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #6: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #7: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #8: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #9: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #10: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #11: crashed: WARNING: ODEBUG bug in hci_uart_tty_close run #12: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #13: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #14: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #15: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #16: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #17: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #18: crashed: BUG: unable to handle kernel paging request in h4_recv_buf run #19: crashed: BUG: unable to handle kernel paging request in h4_recv_buf testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 failed to run ["make" "-j" "64" "ARCH=x86_64" "CC=/syzkaller/shared/bisect_bin/gcc-8.1.0/bin/gcc" "bzImage"]: exit status 2 testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda orc_dump.c:106:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] orc_dump.c:111:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] elf.c:135:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:140:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff orc_dump.c:106:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] orc_dump.c:111:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] elf.c:135:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:140:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 orc_dump.c:105:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] orc_dump.c:110:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:139:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:36:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.13 testing commit 569dbb88e80deb68974ef6fdd6a13edb9d686261 pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] elf.c:144:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:149:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.12 testing commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] elf.c:141:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:146:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.11 testing commit a351e9b9fc24e982ec2f0e76379a49826036da12 elf.c:141:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:146:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.10 testing commit c470abd4fde40ea6a0846a2beab642a578c0b8cd tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.9 testing commit 69973b830859bc6529a7a0468ba0d80ee5117826 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.7 testing commit 523d939ef98fd712632d93a5a2b588e477a7565e tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] elf.c:122:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:127:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] testing release v4.6 testing commit 2dcd0af568b0cf583645c8a317dd12e344b1c72a tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] pager.c:33:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] Reproducer flagged being flaky revisions tested: 18, total time: 3h24m57.994363563s (build: 1h54m56.266773921s, test: 1h25m3.083623929s) the crash already happened on the oldest tested release commit msg: Linux 4.18 crash: BUG: unable to handle kernel paging request in h4_recv_buf Bluetooth: hci10: command 0x1009 tx timeout Bluetooth: hci11: command 0x1009 tx timeout Bluetooth: hci6: Frame reassembly failed (-84) Bluetooth: hci7: Frame reassembly failed (-84) Bluetooth: hci8: Frame reassembly failed (-84) BUG: unable to handle kernel paging request at ffffffffffffffd6 PGD 906b067 P4D 906b067 PUD 906d067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN Bluetooth: hci11: Frame reassembly failed (-84) CPU: 0 PID: 10155 Comm: syz-executor.2 Not tainted 4.18.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:h4_recv_buf+0x16a/0xb90 drivers/bluetooth/hci_h4.c:188 Code: 84 19 02 00 00 4d 8d 57 2a 4c 89 d0 48 c1 e8 03 42 0f b6 14 30 4c 89 d0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 3c 07 00 00 <45> 0f b7 67 2a 4d 8d 9f 80 00 00 00 4c 89 d8 48 c1 e8 03 42 0f b6 RSP: 0018:ffff8800b32079e8 EFLAGS: 00010246 RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffff885990b0 RDX: 0000000000000000 RSI: ffffffff885990a0 RDI: ffff880087837900 RBP: ffff8800b3207a80 R08: ffffffff885990a0 R09: 0000000000000003 R10: ffffffffffffffd6 R11: ffff8800ba63ea53 R12: ffff8800a0566c80 R13: ffff8800b3207b58 R14: dffffc0000000000 R15: ffffffffffffffac FS: 00007f281fe11700(0000) GS:ffff8800ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000096586000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: h4_recv+0xc8/0x1d0 drivers/bluetooth/hci_h4.c:131 hci_uart_tty_receive+0x1ce/0x460 drivers/bluetooth/hci_ldisc.c:605 tiocsti drivers/tty/tty_io.c:2180 [inline] tty_ioctl+0x640/0x1280 drivers/tty/tty_io.c:2566 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x196/0x1050 fs/ioctl.c:684 ksys_ioctl+0x62/0x90 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:706 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f281fe11188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 00000000200000c0 RSI: 0000000000005412 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff3abf6b9f R14: 00007f281fe11300 R15: 0000000000022000 Modules linked in: CR2: ffffffffffffffd6 ---[ end trace d9ee30a6618466ab ]--- RIP: 0010:h4_recv_buf+0x16a/0xb90 drivers/bluetooth/hci_h4.c:188 Code: 84 19 02 00 00 4d 8d 57 2a 4c 89 d0 48 c1 e8 03 42 0f b6 14 30 4c 89 d0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 3c 07 00 00 <45> 0f b7 67 2a 4d 8d 9f 80 00 00 00 4c 89 d8 48 c1 e8 03 42 0f b6 RSP: 0018:ffff8800b32079e8 EFLAGS: 00010246 RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffff885990b0 RDX: 0000000000000000 RSI: ffffffff885990a0 RDI: ffff880087837900 RBP: ffff8800b3207a80 R08: ffffffff885990a0 R09: 0000000000000003 R10: ffffffffffffffd6 R11: ffff8800ba63ea53 R12: ffff8800a0566c80 R13: ffff8800b3207b58 R14: dffffc0000000000 R15: ffffffffffffffac FS: 00007f281fe11700(0000) GS:ffff8800ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000096586000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 84 19 test %bl,(%rcx) 2: 02 00 add (%rax),%al 4: 00 4d 8d add %cl,-0x73(%rbp) 7: 57 push %rdi 8: 2a 4c 89 d0 sub -0x30(%rcx,%rcx,4),%cl c: 48 c1 e8 03 shr $0x3,%rax 10: 42 0f b6 14 30 movzbl (%rax,%r14,1),%edx 15: 4c 89 d0 mov %r10,%rax 18: 83 e0 07 and $0x7,%eax 1b: 83 c0 01 add $0x1,%eax 1e: 38 d0 cmp %dl,%al 20: 7c 08 jl 0x2a 22: 84 d2 test %dl,%dl 24: 0f 85 3c 07 00 00 jne 0x766 2a: 45 0f b7 67 2a movzwl 0x2a(%r15),%r12d <-- trapping instruction 2f: 4d 8d 9f 80 00 00 00 lea 0x80(%r15),%r11 36: 4c 89 d8 mov %r11,%rax 39: 48 c1 e8 03 shr $0x3,%rax 3d: 42 rex.X 3e: 0f .byte 0xf 3f: b6 .byte 0xb6