Bug 243196
| Summary: | [geom_journal] panic unloading geom_journal driver | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Alfredo Dal'Ava Junior <alfredo> |
| Component: | kern | Assignee: | Mark Johnston <markj> |
| Status: | Closed FIXED | ||
| Severity: | Affects Some People | CC: | luporl, markj |
| Priority: | --- | Keywords: | crash |
| Version: | CURRENT | ||
| Hardware: | Any | ||
| OS: | Any | ||
Not PPC-specific, I was able to reproduce on x86: testvm# for x in geom_* ; do kldunload $x ; done kldunload: can't find file geom_bde.ko kldunload: can't find file geom_cache.ko kldunload: can't find file geom_ccd.ko kldunload: can't find file geom_concat.ko kldunload: can't find file geom_eli.ko kldunload: can't find file geom_flashmap.ko panic: Assertion g_journal_switcher_proc != NULL failed at /usr/home/conrad/src/freebsd/sys/geom/journal/g_journal.c:2970 cpuid = 0 time = 1578511869 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00176048e0 vpanic() at vpanic+0x17e/frame 0xfffffe0017604940 panic() at panic+0x43/frame 0xfffffe00176049a0 g_journal_fini() at g_journal_fini+0x15a/frame 0xfffffe00176049c0 g_modevent() at g_modevent+0x2c5/frame 0xfffffe0017604a00 module_unload() at module_unload+0x32/frame 0xfffffe0017604a20 linker_file_unload() at linker_file_unload+0x24b/frame 0xfffffe0017604a80 kern_kldunload() at kern_kldunload+0x10d/frame 0xfffffe0017604ac0 amd64_syscall() at amd64_syscall+0x2d6/frame 0xfffffe0017604bf0 fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0017604bf0 --- syscall (444, FreeBSD ELF64, sys_kldunloadf), rip = 0x8002da60a, rsp = 0x7fffffffd1e8, rbp = 0x7fffffffda40 --- A commit references this bug: Author: markj Date: Fri Apr 3 13:57:42 UTC 2020 New revision: 359595 URL: https://svnweb.freebsd.org/changeset/base/359595 Log: geom_journal: Only stop the switcher process if one was started. PR: 243196 MFC after: 1 week Changes: head/sys/geom/journal/g_journal.c A commit references this bug: Author: markj Date: Fri Apr 10 01:23:06 UTC 2020 New revision: 359765 URL: https://svnweb.freebsd.org/changeset/base/359765 Log: MFC r359595: geom_journal: Only stop the switcher process if one was started. PR: 243196 Changes: _U stable/12/ stable/12/sys/geom/journal/g_journal.c Thanks for the report. |
I hit a kernel panic when unloading some geom drivers on a PowerPC64 QEMU virtual machine: [root@alfredo-2 /boot/kernel]# kldload geom_* [root@alfredo-2 /boot/kernel]# kldunload geom_* panic: Assertion g_journal_switcher_proc != NULL failed at /usr/src/sys/geom/journal/g_journal.c:2970 cpuid = 15 time = 1578519766 KDB: stack backtrace: 0xe0000000641650f0: at kdb_backtrace+0x60 0xe000000064165200: at vpanic+0x1d8 0xe0000000641652b0: at panic+0x40 0xe0000000641652e0: at g_journal_fini+0x268 0xe000000064165390: at g_modevent+0x394 0xe000000064165430: at module_unload+0x70 0xe000000064165470: at linker_file_unload+0x290 0xe000000064165530: at kern_kldunload+0x148 0xe0000000641655e0: at sys_kldunloadf+0x34 0xe000000064165610: at trap+0xd58 0xe000000064165750: at powerpc_interrupt+0x1b8 0xe0000000641657e0: user SC trap by 0x810132350: srr1=0x800000000200f032 r1=0x3fffffffffffcef0 cr=0x42820b80 xer=0 ctr=0x810132340 r2=0x8102d2378 frame=0xe000000064165810 KDB: enter: panic [ thread pid 40190 tid 100614 ] Stopped at kdb_enter+0x78: ori r0, r0, 0x0 FreeBSD 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r356261: Thu Jan 2 05:59:33 UTC 2020 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/powerpc.powerpc64/sys/GENERIC64 powerpc