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Zeeb" To: current@freebsd.org Subject: LOR netlink / so_rcv triggered by acpi_UserNotify -> devctl_notify Message-ID: X-OpenPGP-Key-Id: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset=US-ASCII X-Rspamd-Queue-Id: 4Zx0Ry3nDFz3x7g X-Spamd-Bar: - X-Spamd-Result: default: False [-1.42 / 15.00]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_SPAM_MEDIUM(0.73)[0.728]; DMARC_POLICY_ALLOW(-0.50)[zabbadoz.net,none]; R_SPF_ALLOW(-0.20)[+ip6:2003:a:140a:2200:6:594:fffe:19]; R_DKIM_ALLOW(-0.20)[zabbadoz.net:s=20240622]; NEURAL_HAM_LONG(-0.15)[-0.146]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; MISSING_XM_UA(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; ASN(0.00)[asn:3320, ipnet:2003::/19, country:DE]; RCVD_COUNT_THREE(0.00)[4]; ARC_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; MLMMJ_DEST(0.00)[current@freebsd.org]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[current@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_LAST(0.00)[]; DKIM_TRACE(0.00)[zabbadoz.net:+] [73275.585599] lock order reversal: [73275.585623] 1st 0xfffffe003c3665b0 netlink lock (netlink lock, rm) @ sys/netlink/netlink_domain.c:219 [73275.585670] 2nd 0xfffff800451949e0 so_rcv (so_rcv, sleep mutex) @ sys/netlink/netlink_io.c:229 [73275.586487] lock order netlink lock -> so_rcv attempted at: [73275.586509] #0 0xffffffff80bdadc1 at witness_checkorder+0xbe1 [73275.587246] #1 0xffffffff80b3bee1 at __mtx_lock_flags+0x91 [73275.588757] #2 0xffffffff80de364d at nl_send+0xad [73275.588773] #3 0xffffffff80ddf5cf at nl_send_group+0x1df [73275.589534] #4 0xffffffff80de3a62 at _nlmsg_flush+0x22 [73275.590052] #5 0xffffffff837942c6 at sysevent_send+0x1e6 [73275.591013] #6 0xffffffff80b01f13 at devctl_notify+0x53 [73275.591018] #7 0xffffffff804b931a at acpi_UserNotify+0x7a [73275.591142] #8 0xffffffff821604ca at acpi_ibm_notify+0x40a [73275.591344] #9 0xffffffff803e8530 at AcpiEvNotifyDispatch+0x40 [73275.591509] #10 0xffffffff804b6250 at acpi_task_execute+0x10 [73275.591514] #11 0xffffffff80bccfc2 at taskqueue_run_locked+0x1c2 [73275.591678] #12 0xffffffff80bcdeb3 at taskqueue_thread_loop+0xd3 [73275.591833] #13 0xffffffff80b15042 at fork_exit+0x82 [73275.592029] #14 0xffffffff81002f2e at fork_trampoline+0xe -- Bjoern A. Zeeb r15:7