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Description of problem: modprobe bugcheck! -- causes install to fail. Version-Release number of selected component (if applicable): 20060830 How reproducible: 100% Steps to Reproduce: 1. Attempt to install via NFS Actual results: After attempting to identify what video hardware, etc., is in the system, the kernel dies with: modprobe[4819]: bugcheck! 0 [1] Modules linked in: dm_emc dm_round_robin dm_multipath dm_snapshot dm_mirror dm_zero dm_mod xfs jfs reiserfs lock_nolock gfs2 ext3 jbd msdos raid456 xor raid1 raid0 qla1280 qla2xxx scsi_transport_fc mptspi scsi_transport_spi mptscsih mptbase tg3 ioc4 iscsi_tcp libiscsi scsi_transport_iscsi sr_mod sd_mod scsi_mod ide_cd cdrom ipv6 squashfs loop nfs nfs_acl fscache lockd sunrpc vfat fat cramfs Pid: 4819, CPU 13, comm: modprobe psr : 0000101008522030 ifs : 800000000000038c ip : [<a000000100140ff0>] Not tainted ip is at check_slabp+0x210/0x240 unat: 0000000000000000 pfs : 000000000000038c rsc : 0000000000000003 rnat: 0000000044f56bbd bsps: 000000002ebae400 pr : 999a156aa95a6555 ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c8a70033f csd : 0000000000000000 ssd : 0000000000000000 b0 : a000000100140ff0 b6 : a000000100066fa0 b7 : a000000100240660 f6 : 0fffbccccccccc8c00000 f7 : 0ffdaa200000000000000 f8 : 100008000000000000000 f9 : 10002a000000000000000 f10 : 0fffcccccccccc8c00000 f11 : 1003e0000000000000000 r1 : a000000100ba13c0 r2 : a0000001009b8ba0 r3 : e00008b0796a9044 r8 : 0000000000000021 r9 : a0000001009b6d20 r10 : a0000001009b8bd0 r11 : a0000001009b8bd0 r12 : e00008b0796afb50 r13 : e00008b0796a8000 r14 : a0000001009b8ba0 r15 : 0000000000000000 r16 : ffffffffdead4ead r17 : 00000000dead4ead r18 : a000000100841b64 r19 : a0000001009b6d18 r20 : 0000000000000000 r21 : a0000001009a1a58 r22 : a0000001009b8ed8 r23 : a0000001007f3100 r24 : a0000001009a1a58 r25 : a0000001009b8ba8 r26 : a0000001009b8ba8 r27 : a0000001009a1be8 r28 : a000000100841b68 r29 : 000000000000000d r30 : a000000100841b70 r31 : e00008b0796a9044 Call Trace: [<a000000100013e80>] show_stack+0x40/0xa0 sp=e00008b0796af6e0 bsp=e00008b0796a95e8 [<a000000100014780>] show_regs+0x840/0x880 sp=e00008b0796af8b0 bsp=e00008b0796a9590 [<a000000100037b80>] die+0x1c0/0x2a0 sp=e00008b0796af8b0 bsp=e00008b0796a9548 [<a000000100037cb0>] die_if_kernel+0x50/0x80 sp=e00008b0796af8d0 bsp=e00008b0796a9518 [<a00000010061e350>] ia64_bad_break+0x270/0x4a0 sp=e00008b0796af8d0 bsp=e00008b0796a94f0 [<a00000010000c700>] __ia64_leave_kernel+0x0/0x280 sp=e00008b0796af980 bsp=e00008b0796a94f0 [<a000000100140ff0>] check_slabp+0x210/0x240 sp=e00008b0796afb50 bsp=e00008b0796a9490 [<a000000100144260>] __cache_alloc_node+0x100/0x300 sp=e00008b0796afb50 bsp=e00008b0796a9448 [<a000000100144580>] alternate_node_alloc+0x120/0x160 sp=e00008b0796afb50 bsp=e00008b0796a9418 [<a0000001001458e0>] kmem_cache_zalloc+0xa0/0x260 sp=e00008b0796afb50 bsp=e00008b0796a93e0 [<a00000010011fab0>] do_brk+0x390/0x520 sp=e00008b0796afb50 bsp=e00008b0796a9398 [<a0000001001c2330>] set_brk+0x70/0x120 sp=e00008b0796afb80 bsp=e00008b0796a9368 [<a0000001001c3d50>] load_elf_binary+0x10f0/0x2860 sp=e00008b0796afb80 bsp=e00008b0796a9268 [<a000000100170af0>] search_binary_handler+0x210/0x6e0 sp=e00008b0796afb90 bsp=e00008b0796a9218 [<a000000100173660>] do_execve+0x2c0/0x4e0 sp=e00008b0796afb90 bsp=e00008b0796a91a8 [<a000000100012c20>] sys_execve+0x60/0xa0 sp=e00008b0796afb90 bsp=e00008b0796a9170 [<a00000010000bc50>] ia64_execve+0x30/0x140 sp=e00008b0796afb90 bsp=e00008b0796a9120 [<a00000010000c490>] __ia64_trace_syscall+0xd0/0x110 sp=e00008b0796afb90 bsp=e00008b0796a9120 [<a00000010000c380>] execve+0x0/0x20 sp=e00008b0796afd60 bsp=e00008b0796a9120 [<a0000001000a3820>] __exec_usermodehelper+0x140/0x160 sp=e00008b0796afd60 bsp=e00008b0796a90e0 [<a0000001000a3940>] ____call_usermodehelper+0x100/0x140 sp=e00008b0796afd60 bsp=e00008b0796a90b8 [<a0000001000123f0>] kernel_thread_helper+0x30/0x60 sp=e00008b0796afe30 bsp=e00008b0796a9090 [<a0000001000090c0>] start_kernel_thread+0x20/0x40 sp=e00008b0796afe30 bsp=e00008b0796a9090 <0>BUG: spinlock lockup on CPU#2, events/2/196, e00000b0030696e0 (Not tainted) Call Trace: [<a000000100013e80>] show_stack+0x40/0xa0 sp=e00005b005187b30 bsp=e00005b005181280 [<a000000100013f10>] dump_stack+0x30/0x60 sp=e00005b005187d00 bsp=e00005b005181268 [<a0000001002acf80>] _raw_spin_lock+0x200/0x260 sp=e00005b005187d00 bsp=e00005b005181230 [<a00000010061c970>] _spin_lock_irq+0x30/0x60 sp=e00005b005187d00 bsp=e00005b005181210 [<a000000100147530>] drain_array+0xb0/0x200 sp=e00005b005187d00 bsp=e00005b0051811b8 [<a00000010014ad90>] cache_reap+0x270/0x580 sp=e00005b005187d00 bsp=e00005b005181170 [<a0000001000a4060>] run_workqueue+0x1c0/0x280 sp=e00005b005187d00 bsp=e00005b005181130 [<a0000001000a5f40>] worker_thread+0x1a0/0x240 sp=e00005b005187d00 bsp=e00005b005181100 [<a0000001000adc60>] kthread+0x220/0x2a0 sp=e00005b005187d50 bsp=e00005b0051810b8 [<a0000001000123f0>] kernel_thread_helper+0x30/0x60 sp=e00005b005187e30 bsp=e00005b005181090 [<a0000001000090c0>] start_kernel_thread+0x20/0x40 sp=e00005b005187e30 bsp=e00005b005181090 Expected results: No panic/BUG should be seen.
Issue is not seen with latest kernel from 20050830 ... P.
Ouch ... this is being caused by slab corruption -- the BUG was triggered by: static void check_slabp(struct kmem_cache *cachep, struct slab *slabp) { kmem_bufctl_t i; int entries = 0; /* Check slab's freelist to see if this obj is there. */ for (i = slabp->free; i != BUFCTL_END; i = slab_bufctl(slabp)[i]) { entries++; if (entries > cachep->num || i >= cachep->num) goto bad; } if (entries != cachep->num - slabp->inuse) { bad: printk(KERN_ERR "slab: Internal list corruption detected in " "cache '%s'(%d), slabp %p(%d). Hexdump:\n", cachep->name, cachep->num, slabp, slabp->inuse); for (i = 0; i < sizeof(*slabp) + cachep->num * sizeof(kmem_bufctl_t); i++) { if (i % 16 == 0) printk("\n%03x:", i); printk(" %02x", ((unsigned char *)slabp)[i]); } printk("\n"); BUG(); } } P.
Clarifying comment #1: The issue only seems to hit during the installation -- I can load the kernel via rpm and boot without any issues.
Changing to proper owner, kernel-maint.
I'm willing to bet that this was caused by the squashfs corruption issue, 204638. It definately has the footprint of the corruption ... marking as a duplicate. P. *** This bug has been marked as a duplicate of 204638 ***