tice kernel: [ [ 546.439303][ T29] audit: type=1400 audit(1736492870.171:18112): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 546.216970][ T[ 546.470507][ T2980] BUG: KCSAN: data-race in _prb_read_valid / prb_reserve 29] audit: type=[ 546.478905][ T2980] 1400 audit(17364[ 546.482604][ T2980] write to 0xffffffff86725b38 of 8 bytes by task 29 on cpu 1: 92869.941:18103)[ 546.491466][ T2980] prb_reserve+0x740/0xb60 : avc: denied [ 546.497308][ T2980] vprintk_store+0x558/0x870 kernel/printk/printk.c:2326 { recv } for pi[ 546.503300][ T2980] vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408 d=12206 comm="kw[ 546.509216][ T2980] vprintk_default+0x26/0x30 kernel/printk/printk.c:2447 orker/u8:8" sadd[ 546.515257][ T2980] vprintk+0x75/0x80 kernel/printk/printk_safe.c:86 r=10.128.0.163 s[ 546.520545][ T2980] _printk+0x7a/0xa0 kernel/printk/printk.c:2457 rc=30030 daddr=1[ 546.525829][ T2980] kauditd_printk_skb kernel/audit.c:546 [inline] rc=30030 daddr=1[ 546.525829][ T2980] kauditd_hold_skb+0x1a3/0x1b0 kernel/audit.c:581 0.128.1.191 dest[ 546.532077][ T2980] kauditd_send_queue+0x288/0x2e0 kernel/audit.c:766 =42792 netif=eth[ 546.538484][ T2980] kauditd_thread+0x42a/0x650 kernel/audit.c:890 0 scontext=root:[ 546.544560][ T2980] kthread+0x1d1/0x210 kernel/kthread.c:389 sysadm_r:sysadm_[ 546.550019][ T2980] ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 t Jan 10 07:07:[ 546.555824][ T2980] ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 50 syzkaller ker[ 546.561961][ T2980] n.notice kernel:[ 546.565680][ T2980] read to 0xffffffff86725b38 of 8 bytes by task 2980 on cpu 0: [ 546.249818][[ 546.574605][ T2980] desc_read kernel/printk/printk_ringbuffer.c:486 [inline] [ 546.249818][[ 546.574605][ T2980] prb_first_seq kernel/printk/printk_ringbuffer.c:1957 [inline] [ 546.249818][[ 546.574605][ T2980] _prb_read_valid+0x3bb/0xba0 kernel/printk/printk_ringbuffer.c:2114 T29] audit: t[ 546.580751][ T2980] prb_read_valid+0x3d/0x60 kernel/printk/printk_ringbuffer.c:2182 ype=1400 audit(1[ 546.586638][ T2980] __console_flush_and_unlock kernel/printk/printk.c:3288 [inline] ype=1400 audit(1[ 546.586638][ T2980] console_unlock+0x175/0x330 kernel/printk/printk.c:3309 736492869.971:18[ 546.592695][ T2980] console_device+0x181/0x1b0 kernel/printk/printk.c:3494 104): avc: deni[ 546.598756][ T2980] tty_lookup_driver+0xb3/0x2d0 drivers/tty/tty_io.c:1930 ed { read } for[ 546.604987][ T2980] tty_open_by_driver drivers/tty/tty_io.c:2047 [inline] ed { read } for[ 546.604987][ T2980] tty_open+0x1dc/0xb00 drivers/tty/tty_io.c:2129 pid=2980 comm=[ 546.610527][ T2980] chrdev_open+0x2f9/0x370 fs/char_dev.c:414 "syslogd" name="[ 546.616338][ T2980] do_dentry_open+0x621/0xa20 fs/open.c:945 log" dev="sda1" [ 546.622488][ T2980] vfs_open+0x38/0x1f0 fs/open.c:1075 ino=1915 scontex[ 546.627942][ T2980] do_open fs/namei.c:3828 [inline] ino=1915 scontex[ 546.627942][ T2980] path_openat+0x1ac2/0x1fa0 fs/namei.c:3987 t=system_u:syste[ 546.633939][ T2980] do_filp_open+0x107/0x230 fs/namei.c:4014 m_r:syslogd_t tc[ 546.639826][ T2980] do_sys_openat2+0xab/0x120 fs/open.c:1402 ontext=system_u:[ 546.645802][ T2980] do_sys_open fs/open.c:1417 [inline] ontext=system_u:[ 546.645802][ T2980] __do_sys_openat fs/open.c:1433 [inline] ontext=system_u:[ 546.645802][ T2980] __se_sys_openat fs/open.c:1428 [inline] ontext=system_u:[ 546.645802][ T2980] __x64_sys_openat+0xf3/0x120 fs/open.c:1428 object_r:var_t t[ 546.651955][ T2980] x64_sys_call+0x2b30/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:258 class Jan 10 07[ 546.658019][ T2980] do_syscall_x64 arch/x86/entry/common.c:52 [inline] Jan 10 07[ 546.658019][ T2980] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 :07:50 syzkaller[ 546.663914][ T2980] entry_SYSCALL_64_after_hwframe+0x77/0x7f kern.notice ker[ 546.671218][ T2980] nel: [ 546.2730[ 546.674930][ T2980] value changed: 0x0000000000001a7d -> 0x0000000000000000 99][ T29] audi[ 546.683423][ T2980] t: type=1400 aud[ 546.687139][ T2980] Reported by Kernel Concurrency Sanitizer on: it(1736492869.97[ 546.694774][ T2980] CPU: 0 UID: 0 PID: 2980 Comm: syslogd Not tainted 6.13.0-rc6-syzkaller-00059-g643e2e259c2b #0 1:18105): avc: [ 546.706568][ T2980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 denied { read }[ 546.718177][ T2980] ================================================================== for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.notice kernel: [ 546.297492][ T29] audit: type=1400 audit(1736492870.021:18106): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.notice kernel: [ 546.320136][ T29] audit: type=1400 audit(1736492870.021:18107): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.notice kernel: [ 546.344250][ T29] audit: type=1400 audit(1736492870.071:18108): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.notice kernel: [ 546.367361][ T29] audit: type=1400 audit(1736492870.071:18109): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.notice kernel: [ 546.391060][ T29] audit: type=1400 audit(1736492870.111:18110): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.notice kernel: [ 546.414184][ T29] audit: type=1400 audit(1736492870.111:18111): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.notice kernel: [ 546.439303][ T29] audit: type=1400 audit(1736492870.171:18112): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:50 syzkaller kern.err kernel: [ 546.439386][ T2980] ================================================================== Jan 10 07:07:50 syzkaller kern.err kernel: [ 546.470507][ T2980] BUG: KCSAN: data-race in _prb_read_valid / prb_reserve Jan 10 07:07:50 syzkaller kern.err kernel: [ 546.478905][ T2980] Jan 10 07:07:50 syzkaller kern.err kernel: [ 546.482604][ T2980] write to 0xffffffff86725b38 of 8 bytes by task 29 on cpu 1: Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.491466][ T2980] prb_reserve+0x740/0xb60 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.497308][ T2980] vprintk_store+0x558/0x870 kernel/printk/printk.c:2326 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.503300][ T2980] vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.509216][ T2980] vprintk_default+0x26/0x30 kernel/printk/printk.c:2447 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.515257][ T2980] vprintk+0x75/0x80 kernel/printk/printk_safe.c:86 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.520545][ T2980] _printk+0x7a/0xa0 kernel/printk/printk.c:2457 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.525829][ T2980] kauditd_printk_skb kernel/audit.c:546 [inline] Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.525829][ T2980] kauditd_hold_skb+0x1a3/0x1b0 kernel/audit.c:581 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.532077][ T2980] kauditd_send_queue+0x288/0x2e0 kernel/audit.c:766 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.538484][ T2980] kauditd_thread+0x42a/0x650 kernel/audit.c:890 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.544560][ T2980] kthread+0x1d1/0x210 kernel/kthread.c:389 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.550019][ T2980] ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.555824][ T2980] ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Jan 10 07:07:50 syzkaller kern.err kernel: [ 546.561961][ T2980] Jan 10 07:07:50 syzkaller kern.err kernel: [ 546.565680][ T2980] read to 0xffffffff86725b38 of 8 bytes by task 2980 on cpu 0: Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.574605][ T2980] desc_read kernel/printk/printk_ringbuffer.c:486 [inline] Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.574605][ T2980] prb_first_seq kernel/printk/printk_ringbuffer.c:1957 [inline] Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.574605][ T2980] _prb_read_valid+0x3bb/0xba0 kernel/printk/printk_ringbuffer.c:2114 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.580751][ T2980] prb_read_valid+0x3d/0x60 kernel/printk/printk_ringbuffer.c:2182 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.586638][ T2980] __console_flush_and_unlock kernel/printk/printk.c:3288 [inline] Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.586638][ T2980] console_unlock+0x175/0x330 kernel/printk/printk.c:3309 Jan 10 07:07:50 syzkaller kern.warn kernel: [ 546.592695][ T29Jan 10 07:07:50 Jan 10 07:07:50 Jan 10 07:07:50 [ 554.594079][ T29] kauditd_printk_skb: 43 callbacks suppressed Jan 10 07:07:58 [ 554.648399][ T29] audit: type=1400 audit(1736492878.381:18158): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 syzkaller kern.w[ 554.672749][ T29] audit: type=1400 audit(1736492878.401:18159): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 arn kernel: [ 5[ 554.695616][ T29] audit: type=1400 audit(1736492878.421:18160): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 54.594079][ T2[ 554.719352][ T29] audit: type=1400 audit(1736492878.451:18161): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 9] kauditd_printk_skb: 43 callba[ 554.744757][ T29] audit: type=1400 audit(1736492878.471:18162): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 cks suppressed Jan 10 07:07:58 [ 554.791110][ T29] audit: type=1400 audit(1736492878.521:18164): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 syzkaller kern.n[ 554.813766][ T29] audit: type=1400 audit(1736492878.521:18165): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=0 otice kernel: [ 554.594093][ T29] audit: type=1400 audit(1736492878.311:18156): avc: denied { recv } for pid=0 comm="swapper/1" saddr=10.128.0.163 src=44652 daddr=10.128.1.191 dest=22 netif=eth0 scontext=system_u:system_r:sshd_t tcontex Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.625538][ T29] audit: type=1400 audit(1736492878.331:18157): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.648399][ T29] audit: type=1400 audit(1736492878.381:18158): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.672749][ T29] audit: type=1400 audit(1736492878.401:18159): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.695616][ T29] audit: type=1400 audit(1736492878.421:18160): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.719352][ T29] audit: type=1400 audit(1736492878.451:18161): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.744757][ T29] audit: type=1400 audit(1736492878.471:18162): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.767114][ T29] audit: type=1400 audit(1736492878.491:18163): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.791110][ T29] audit: type=1400 audit(1736492878.521:18164): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass Jan 10 07:07:58 syzkaller kern.notice kernel: [ 554.813766][ T29] audit: type=1400 audit(1736492878.521:18165): avc: denied { read } for pid=2980 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass