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================================================================== BUG: KCSAN: data-race in data_push_tail / symbol_string write to 0xffffffff86ebf8a0 of 1 bytes by task 25644 on cpu 0: string_nocheck lib/vsprintf.c:649 [inline] symbol_string+0x1b6/0x240 lib/vsprintf.c:1005 pointer+0x77a/0xd10 lib/vsprintf.c:2416 vsnprintf+0x861/0xe20 lib/vsprintf.c:2822 vscnprintf+0x42/0x80 lib/vsprintf.c:2924 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2128 vprintk_store+0x56f/0x800 kernel/printk/printk.c:2242 vprintk_emit+0xd0/0x5d0 kernel/printk/printk.c:2288 vprintk_default+0x26/0x30 kernel/printk/printk.c:2322 vprintk+0x71/0x80 kernel/printk/printk_safe.c:45 _printk+0x7a/0xa0 kernel/printk/printk.c:2332 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline] show_trace_log_lvl+0x42e/0x510 arch/x86/kernel/dumpstack.c:285 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xda/0x130 lib/dump_stack.c:106 dump_stack+0x15/0x20 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:52 [inline] should_fail_ex+0x21f/0x230 lib/fault-inject.c:153 __should_failslab+0x92/0xa0 mm/failslab.c:44 should_failslab+0x9/0x20 mm/slab_common.c:1509 slab_pre_alloc_hook+0x38/0x180 mm/slab.h:711 slab_alloc_node mm/slub.c:3460 [inline] kmem_cache_alloc_node+0x54/0x240 mm/slub.c:3523 __alloc_skb+0x109/0x2e0 net/core/skbuff.c:640 alloc_skb include/linux/skbuff.h:1286 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline] netlink_sendmsg+0x483/0x770 net/netlink/af_netlink.c:1885 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x37c/0x4d0 net/socket.c:2558 ___sys_sendmsg net/socket.c:2612 [inline] __sys_sendmsg+0x1e9/0x270 net/socket.c:2641 __do_sys_sendmsg net/socket.c:2650 [inline] __se_sys_sendmsg net/socket.c:2648 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2648 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffffffff86ebf8a0 of 8 bytes by task 25575 on cpu 1: data_make_reusable kernel/printk/printk_ringbuffer.c:590 [inline] data_push_tail+0x102/0x430 kernel/printk/printk_ringbuffer.c:675 data_alloc+0xbe/0x2c0 kernel/printk/printk_ringbuffer.c:1046 prb_reserve+0x893/0xbc0 kernel/printk/printk_ringbuffer.c:1555 vprintk_store+0x53e/0x800 kernel/printk/printk.c:2232 vprintk_emit+0xd0/0x5d0 kernel/printk/printk.c:2288 vprintk_default+0x26/0x30 kernel/printk/printk.c:2322 vprintk+0x71/0x80 kernel/printk/printk_safe.c:45 _printk+0x7a/0xa0 kernel/printk/printk.c:2332 vlan_device_event+0x106a/0x1120 net/8021q/vlan.c:383 notifier_call_chain kernel/notifier.c:93 [inline] raw_notifier_call_chain+0x6b/0x1c0 kernel/notifier.c:461 __dev_notify_flags+0x205/0x3d0 rtnl_newlink_create net/core/rtnetlink.c:3493 [inline] __rtnl_newlink net/core/rtnetlink.c:3705 [inline] rtnl_newlink+0x12cc/0x1670 net/core/rtnetlink.c:3718 rtnetlink_rcv_msg+0x807/0x8c0 net/core/rtnetlink.c:6444 netlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2545 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6462 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x589/0x650 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x66e/0x770 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x37c/0x4d0 net/socket.c:2558 ___sys_sendmsg net/socket.c:2612 [inline] __sys_sendmsg+0x1e9/0x270 net/socket.c:2641 __do_sys_sendmsg net/socket.c:2650 [inline] __se_sys_sendmsg net/socket.c:2648 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2648 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x000000010000b868 -> 0x3178302b626b735f Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 25575 Comm: syz-executor.4 Not tainted 6.6.0-rc5-syzkaller-00157-ge8c127b05766 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 ================================================================== syz-executor.4 (25575) used greatest stack depth: 9144 bytes left
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/10/13 08:41 | upstream | e8c127b05766 | 6388bc36 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in data_push_tail / symbol_string | ||
2023/09/17 19:41 | upstream | f0b0d403eabb | 0b6a67ac | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in data_push_tail / symbol_string | ||
2023/08/17 17:05 | upstream | 16931859a650 | 74b106b6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in data_push_tail / symbol_string | ||
2023/07/30 07:46 | upstream | 12214540ad87 | 92476829 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in data_push_tail / symbol_string |