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================================================================== BUG: KCSAN: data-race in avc_policy_seqno / avc_ss_reset write to 0xffffffff88baae08 of 4 bytes by task 4513 on cpu 1: avc_latest_notif_update security/selinux/avc.c:584 [inline] avc_ss_reset+0x218/0x250 security/selinux/avc.c:973 selinux_notify_policy_change security/selinux/ss/services.c:2174 [inline] security_set_bools+0x30b/0x350 security/selinux/ss/services.c:3093 sel_commit_bools_write+0x1e4/0x260 security/selinux/selinuxfs.c:1328 do_loop_readv_writev fs/read_write.c:764 [inline] vfs_writev+0x402/0x880 fs/read_write.c:973 do_writev+0xf8/0x220 fs/read_write.c:1018 __do_sys_writev fs/read_write.c:1091 [inline] __se_sys_writev fs/read_write.c:1088 [inline] __x64_sys_writev+0x45/0x50 fs/read_write.c:1088 x64_sys_call+0x1f18/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:21 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff88baae08 of 4 bytes by task 3421 on cpu 0: avc_policy_seqno+0x15/0x20 security/selinux/avc.c:1208 selinux_file_permission+0x218/0x360 security/selinux/hooks.c:3639 security_file_permission+0x43/0x70 security/security.c:2722 rw_verify_area fs/read_write.c:377 [inline] vfs_read+0x133/0x6e0 fs/read_write.c:467 ksys_read+0xeb/0x1b0 fs/read_write.c:619 __do_sys_read fs/read_write.c:629 [inline] __se_sys_read fs/read_write.c:627 [inline] __x64_sys_read+0x42/0x50 fs/read_write.c:627 x64_sys_call+0x27d3/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:1 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000001 -> 0x00000002 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 3421 Comm: udevd Not tainted 6.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/08/26 10:45 | upstream | 5be63fc19fca | d7d32352 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in avc_policy_seqno / avc_ss_reset |