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================================================================== BUG: KCSAN: data-race in __alloc_file / copy_creds write to 0xffff8880a86e92d8 of 4 bytes by task 11635 on cpu 1: get_cred include/linux/cred.h:253 [inline] __alloc_file+0x74/0x210 fs/file_table.c:105 alloc_empty_file+0x8f/0x180 fs/file_table.c:151 alloc_file+0x4e/0x2b0 fs/file_table.c:193 alloc_file_pseudo+0x11c/0x1b0 fs/file_table.c:232 anon_inode_getfile fs/anon_inodes.c:91 [inline] anon_inode_getfile+0x103/0x1d0 fs/anon_inodes.c:74 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3456 [inline] kvm_dev_ioctl+0x571/0xc10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3496 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x991/0xc60 fs/ioctl.c:696 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:718 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8880a86e92d8 of 4 bytes by task 11633 on cpu 0: get_cred include/linux/cred.h:253 [inline] copy_creds+0x258/0x340 kernel/cred.c:346 copy_process+0x926/0x3b50 kernel/fork.c:1884 _do_fork+0xfe/0x6e0 kernel/fork.c:2366 __do_sys_clone kernel/fork.c:2521 [inline] __se_sys_clone kernel/fork.c:2502 [inline] __x64_sys_clone+0x12b/0x160 kernel/fork.c:2502 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11633 Comm: syz-executor.5 Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/08 13:32 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | 1e35461e | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/06 19:23 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | da505f84 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/06 03:54 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | bc2c6e45 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/29 05:07 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 5ea87a66 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/25 11:49 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 04ca72cd | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/23 15:22 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | b602d64b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/23 12:57 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | d0686497 | .config | console log | report | ci2-upstream-kcsan-gce |