Title | Replies (including bot) | Last reply |
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KMSAN: uninit-value in __skb_flow_dissect (3) | 1 (2) | 2020/07/22 16:31 |
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KMSAN: uninit-value in __skb_flow_dissect (3) | 1 (2) | 2020/07/22 16:31 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KMSAN: uninit-value in __skb_flow_dissect net | C | 15 | 2519d | 2533d | 0/28 | closed as invalid on 2018/06/27 15:08 | ||
upstream | KMSAN: uninit-value in __skb_flow_dissect (2) net | 7 | 1829d | 1948d | 0/28 | auto-closed as invalid on 2020/07/08 18:36 |
batman_adv: batadv0: Interface activated: batadv_slave_1 ===================================================== BUG: KMSAN: uninit-value in __skb_flow_dissect+0x30f0/0x8440 net/core/flow_dissector.c:1163 CPU: 0 PID: 8524 Comm: syz-executor152 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1df/0x240 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 __skb_flow_dissect+0x30f0/0x8440 net/core/flow_dissector.c:1163 skb_flow_dissect_flow_keys include/linux/skbuff.h:1310 [inline] ___skb_get_hash net/core/flow_dissector.c:1520 [inline] __skb_get_hash+0x131/0x480 net/core/flow_dissector.c:1586 skb_get_hash include/linux/skbuff.h:1348 [inline] udp_flow_src_port+0xa5/0x690 include/net/udp.h:220 geneve_xmit_skb drivers/net/geneve.c:895 [inline] geneve_xmit+0xdf1/0x2bf0 drivers/net/geneve.c:1005 __netdev_start_xmit include/linux/netdevice.h:4611 [inline] netdev_start_xmit include/linux/netdevice.h:4625 [inline] xmit_one net/core/dev.c:3556 [inline] dev_hard_start_xmit+0x50e/0xa70 net/core/dev.c:3572 __dev_queue_xmit+0x2f8d/0x3b20 net/core/dev.c:4131 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4164 pppoe_sendmsg+0xb43/0xb90 drivers/net/ppp/pppoe.c:900 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] kernel_sendmsg+0x433/0x440 net/socket.c:692 sock_no_sendpage+0x235/0x300 net/core/sock.c:2853 kernel_sendpage net/socket.c:3644 [inline] sock_sendpage+0x25b/0x2c0 net/socket.c:945 pipe_to_sendpage+0x38c/0x4c0 fs/splice.c:448 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x565/0xf00 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x1fd/0x580 fs/splice.c:1016 splice_direct_to_actor+0x6b2/0xf50 fs/splice.c:971 do_splice_direct+0x342/0x580 fs/splice.c:1059 do_sendfile+0x101b/0x1d40 fs/read_write.c:1540 __do_compat_sys_sendfile fs/read_write.c:1622 [inline] __se_compat_sys_sendfile+0x301/0x3c0 fs/read_write.c:1605 __ia32_compat_sys_sendfile+0x56/0x70 fs/read_write.c:1605 do_syscall_32_irqs_on arch/x86/entry/common.c:430 [inline] __do_fast_syscall_32+0x2aa/0x400 arch/x86/entry/common.c:477 do_fast_syscall_32+0x6b/0xd0 arch/x86/entry/common.c:505 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:554 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f13549 Code: Bad RIP value. RSP: 002b:00000000ffd520cc EFLAGS: 00000217 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000000005 RDX: 0000000000000000 RSI: 000000007fffffff RDI: 0000000000000006 RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116 pppoe_sendmsg+0xaed/0xb90 drivers/net/ppp/pppoe.c:896 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] kernel_sendmsg+0x433/0x440 net/socket.c:692 sock_no_sendpage+0x235/0x300 net/core/sock.c:2853 kernel_sendpage net/socket.c:3644 [inline] sock_sendpage+0x25b/0x2c0 net/socket.c:945 pipe_to_sendpage+0x38c/0x4c0 fs/splice.c:448 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x565/0xf00 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0x1d5/0x2d0 fs/splice.c:834 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x1fd/0x580 fs/splice.c:1016 splice_direct_to_actor+0x6b2/0xf50 fs/splice.c:971 do_splice_direct+0x342/0x580 fs/splice.c:1059 do_sendfile+0x101b/0x1d40 fs/read_write.c:1540 __do_compat_sys_sendfile fs/read_write.c:1622 [inline] __se_compat_sys_sendfile+0x301/0x3c0 fs/read_write.c:1605 __ia32_compat_sys_sendfile+0x56/0x70 fs/read_write.c:1605 do_syscall_32_irqs_on arch/x86/entry/common.c:430 [inline] __do_fast_syscall_32+0x2aa/0x400 arch/x86/entry/common.c:477 do_fast_syscall_32+0x6b/0xd0 arch/x86/entry/common.c:505 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:554 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Local variable ----hdr@pppoe_sendmsg created at: pppoe_sendmsg+0xa6/0xb90 drivers/net/ppp/pppoe.c:843 pppoe_sendmsg+0xa6/0xb90 drivers/net/ppp/pppoe.c:843 =====================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/07/20 00:35 | https://github.com/google/kmsan.git master | 14525656779e | 9c812472 | .config | console log | report | syz | C | ci-upstream-kmsan-gce-386 | |||
2020/07/19 03:15 | https://github.com/google/kmsan.git master | 14525656779e | 9c812472 | .config | console log | report | ci-upstream-kmsan-gce-386 | |||||
2020/07/18 09:20 | https://github.com/google/kmsan.git master | 14525656779e | 9c812472 | .config | console log | report | ci-upstream-kmsan-gce-386 |