bisecting cause commit starting from a1f92694393a5a607212293cdccececdf6272253 building syzkaller on aba2b2fb3544d9e42991237c13d8cada421deda5 testing commit a1f92694393a5a607212293cdccececdf6272253 with gcc (GCC) 10.2.1 20210217 kernel signature: 218c4c60f15ef7f054f5e8b9ed28ed8286119f6c50dfb5e16a44835f6eaf7bfe run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: crashed: BUG: corrupted list in kobject_add_internal run #10: crashed: BUG: corrupted list in kobject_add_internal run #11: crashed: BUG: corrupted list in kobject_add_internal run #12: crashed: BUG: corrupted list in kobject_add_internal run #13: crashed: BUG: corrupted list in kobject_add_internal run #14: crashed: BUG: corrupted list in kobject_add_internal run #15: crashed: BUG: corrupted list in kobject_add_internal run #16: crashed: BUG: corrupted list in kobject_add_internal run #17: crashed: BUG: corrupted list in kobject_add_internal run #18: crashed: BUG: corrupted list in kobject_add_internal run #19: crashed: KASAN: use-after-free Read in klist_release testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 with gcc (GCC) 10.2.1 20210217 kernel signature: 20a3195b0c2adea39c30d2e9f830a6fa425a34f031f28cd84a5fc4bf09ce8f4d all runs: crashed: BUG: corrupted list in kobject_add_internal testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b with gcc (GCC) 10.2.1 20210217 kernel signature: 22b26ae1e3be417e2ad324e47433a262e845b6471dfc09f4fa2f647b3330df8e run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor260673787" "root@10.128.10.26:./syz-executor260673787"] testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 10.2.1 20210217 kernel signature: 8f55ba93fd53951cac9b68b979c728becbef461543abacbe99727324ff41baf6 run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: KASAN: use-after-free Read in klist_release run #8: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor427569893" "root@10.128.10.18:./syz-executor427569893"] run #9: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor309224543" "root@10.128.10.28:./syz-executor309224543"] testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 10.2.1 20210217 kernel signature: f654d07eeb7c456b884d4afbd5bc4d393d1b1677ed42327eee0eaef482a1d4de run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: kernel panic: Fatal exception run #9: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor896009268" "root@10.128.10.33:./syz-executor896009268"] testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.4.1 20210217 kernel signature: 1063ebaf54671db7804acf12269942e9a5933d00bfb78bb5cf898a218f3c1d07 run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: KASAN: use-after-free Read in klist_dec_and_del run #9: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor223413037" "root@10.128.10.34:./syz-executor223413037"] Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts. testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.4.1 20210217 kernel signature: 3856a09b3d94850025e3ae49dd0f33b972955333e09df445983a6a278d85997d run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in klist_dec_and_del run #7: crashed: general protection fault in klist_next run #8: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor955715559" "root@10.128.1.102:./syz-executor955715559"] run #9: basic kernel testing failed: failed to copy test binary to VM: timedout ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor694415537" "root@10.128.1.79:./syz-executor694415537"] Warning: Permanently added '10.128.1.79' (ECDSA) to the list of known hosts. testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.4.1 20210217 kernel signature: a3b93acd1315ac27fd28df3f64d6ec371b03ab2c3dca6caf01eeb51039157802 all runs: crashed: BUG: corrupted list in kobject_add_internal testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.4.1 20210217 kernel signature: 56b75590080ebce41771eb20fb3a18a21250479d609f5cd866a9e9cf93705477 all runs: crashed: BUG: corrupted list in kobject_add_internal testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.4.1 20210217 kernel signature: c6858008ba2dd87e1e0dfa3f7b77c43b09b0dc43a2a0142524db4f19e9503c6e run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: crashed: general protection fault in klist_next testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.4.1 20210217 kernel signature: aae18b99c108d4b86fb7c39080c3a8373862416e546d19d54d8a47dcb2701455 all runs: crashed: BUG: corrupted list in kobject_add_internal testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.4.1 20210217 kernel signature: e13f671b39135f0fd02c29412f7240f2d07a062c4a49e605a3f48631956d18cb run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: KASAN: use-after-free Read in klist_dec_and_del run #9: crashed: general protection fault in klist_next testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.4.1 20210217 kernel signature: 1e42e1e588ea7d5fe6accbe13bfa4221a4f9f3d4fb725780ca1567cc27b907dc run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: crashed: general protection fault in klist_next testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.4.1 20210217 kernel signature: 456ab9d42a47fc3d91f08b7c50f5c4ec701f7eb218a74b092e90c30f2478d7da run #0: crashed: BUG: corrupted list in corrupted run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: crashed: BUG: corrupted list in kobject_add_internal testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.4.1 20210217 kernel signature: a6da6dba590a922c4170b4eb352f8b98062f03b697283a67b7decbc97f20fdfe run #0: basic kernel testing failed: general protection fault in batadv_iv_ogm_queue_add run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: crashed: BUG: corrupted list in kobject_add_internal testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.4.1 20210217 kernel signature: 92bf7a4694a4b7c46f009118e17e2834fd6ac676bb06c4fda1064fc77b47af6e run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: OK testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.4.1 20210217 kernel signature: bb24e9cb219a7622d1c1ab81ed9d313e34afd4c40c640bf23c6293020926ae7b run #0: crashed: BUG: corrupted list in kobject_add_internal run #1: crashed: BUG: corrupted list in kobject_add_internal run #2: crashed: BUG: corrupted list in kobject_add_internal run #3: crashed: BUG: corrupted list in kobject_add_internal run #4: crashed: BUG: corrupted list in kobject_add_internal run #5: crashed: BUG: corrupted list in kobject_add_internal run #6: crashed: BUG: corrupted list in kobject_add_internal run #7: crashed: BUG: corrupted list in kobject_add_internal run #8: crashed: BUG: corrupted list in kobject_add_internal run #9: crashed: general protection fault in klist_next testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.4.1 20210217 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 with gcc (GCC) 8.4.1 20210217 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 with gcc (GCC) 8.4.1 20210217 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 with gcc (GCC) 8.4.1 20210217 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 with gcc (GCC) 8.4.1 20210217 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 with gcc (GCC) 8.4.1 20210217 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 with gcc (GCC) 7.5.0 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 with gcc (GCC) 5.5.0 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 with gcc (GCC) 5.5.0 tools/include/linux/log2.h:19:1: error: ignoring attribute 'noreturn' because it conflicts with attribute 'const' [-Werror=attributes] pager.c:35:12: error: passing argument 2 to 'restrict'-qualified parameter aliases with argument 4 [-Werror=restrict] elf.c:129:2: error: 'elf_getshnum' is deprecated [-Werror=deprecated-declarations] elf.c:134:2: error: 'elf_getshstrndx' is deprecated [-Werror=deprecated-declarations] testing release v4.8 testing commit c8d2bc9bc39ebea8437fd974fdbc21847bb897a3 with gcc (GCC) 5.5.0 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 with gcc (GCC) 5.5.0 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 with gcc (GCC) 5.5.0 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] revisions tested: 17, total time: 4h5m49.059303499s (build: 1h59m28.101406844s, test: 2h0m50.569341913s) the crash already happened on the oldest tested release commit msg: Linux 4.18 crash: general protection fault in klist_next ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:412 kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci5: failed to register connection device 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 CPU: 0 PID: 8621 Comm: syz-executor.4 Not tainted 4.18.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:klist_next+0x48/0x3e0 lib/klist.c:377 Code: 48 89 fb 48 83 ec 10 80 3c 02 00 0f 85 ce 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d 7c 24 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 02 00 00 4c 8d 6b 08 4d 8b 7c 24 50 48 b8 00 RSP: 0018:ffff8800b01376f0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8800b0137768 RCX: ffffffff813c8f13 RDX: 000000000000000a RSI: ffff8800b0137768 RDI: 0000000000000050 RBP: ffff8800b0137728 R08: ffffed001574594d R09: ffffed001574594c R10: ffffed001574594c R11: ffff8800aba2ca63 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff86bb9860 R15: dffffc0000000000 FS: 00000000028da400(0000) GS:ffff8800ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564613819928 CR3: 00000000a1e3e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: next_device drivers/base/core.c:2081 [inline] device_find_child+0xb1/0x170 drivers/base/core.c:2224 hci_conn_del_sysfs+0xaa/0x150 net/bluetooth/hci_sysfs.c:71 hci_conn_cleanup+0x1ff/0x4e0 net/bluetooth/hci_conn.c:128 hci_conn_del+0x22c/0x6b0 net/bluetooth/hci_conn.c:611 hci_conn_hash_flush+0x171/0x230 net/bluetooth/hci_conn.c:1367 hci_dev_do_close+0x4ea/0xda0 net/bluetooth/hci_core.c:1611 hci_unregister_dev+0x167/0x880 net/bluetooth/hci_core.c:3181 vhci_release+0x6b/0xe0 drivers/bluetooth/hci_vhci.c:354 __fput+0x232/0x780 fs/file_table.c:209 ____fput+0x9/0x10 fs/file_table.c:243 task_work_run+0x111/0x180 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x9f7/0x2aa0 kernel/exit.c:865 do_group_exit+0xf8/0x2c0 kernel/exit.c:968 get_signal+0x56c/0x1250 kernel/signal.c:2468 do_signal+0x87/0x1850 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x154/0x1e0 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x47a/0x540 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x48a7a1 Code: Bad RIP value. RSP: 002b:00007fffeb2d48c0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: 0000000000000000 RBX: 00000000000009d5 RCX: 000000000048a7a1 RDX: 00007fffeb2d4900 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fffeb2d499c R08: 0000000000000000 R09: 0000006b9c99523b R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 000000000006118b R14: 0000000000000003 R15: 00007fffeb2d4a00 Modules linked in: ---[ end trace 5777bcbe2446e968 ]--- RIP: 0010:klist_next+0x48/0x3e0 lib/klist.c:377 Code: 48 89 fb 48 83 ec 10 80 3c 02 00 0f 85 ce 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d 7c 24 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 02 00 00 4c 8d 6b 08 4d 8b 7c 24 50 48 b8 00 RSP: 0018:ffff8800b01376f0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8800b0137768 RCX: ffffffff813c8f13 RDX: 000000000000000a RSI: ffff8800b0137768 RDI: 0000000000000050 RBP: ffff8800b0137728 R08: ffffed001574594d R09: ffffed001574594c R10: ffffed001574594c R11: ffff8800aba2ca63 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff86bb9860 R15: dffffc0000000000 FS: 00000000028da400(0000) GS:ffff8800ba600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff3d195d18 CR3: 00000000a4132000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400