Core dump limits :
soft - 0
hard - NONE
Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...OK
Checking advanced syscall emulation patch for ptrace...OK
Checking for tmpfs mount on /dev/shm...OK
Checking PROT_EXEC mmap in /dev/shm/...OK
Checking for the skas3 patch in the host:
- /proc/mm...found
- PTRACE_FAULTINFO...found
- PTRACE_LDT...found
UML running in SKAS3 mode
Program received signal SIGSEGV, Segmentation fault.
0x084a3c83 in abort () at include/net/sock.h:269
269 return hlist_entry(head->first, struct sock, sk_node);
backtrace:
#0 0x084a3c83 in abort () at include/net/sock.h:269
#1 0x08093070 in os_dump_core () at arch/um/os-Linux/util.c:109
#2 0x0806d2c0 in panic_exit (self=0x85ba2fc, unused1=0, unused2=0x8b4b240)
at arch/um/kernel/um_arch.c:477
#3 0x080d11e9 in notifier_call_chain (nl=0x8b4b220, val=0, v=0x8b4b240,
nr_to_call=-2, nr_calls=0x0) at kernel/sys.c:163
#4 0x080d13c0 in __atomic_notifier_call_chain (nh=0x8b4b220, val=0,
v=0x8b4b240, nr_to_call=-1, nr_calls=0x0) at kernel/sys.c:256
#5 0x080d1412 in atomic_notifier_call_chain (nh=0x8b4b220, val=0, v=0x8b4b240)
at kernel/sys.c:266
#6 0x080acf28 in panic (fmt=0x854eb55 "Operation too long")
at kernel/panic.c:99
#7 0x080836f1 in cowify_req (req=0x92b07e0, bitmap=0xc800000,
bitmap_offset=8192, bitmap_len=524289) at arch/um/drivers/ubd_kern.c:1037
#8 0x08083824 in prepare_request (req=0x92c06e0, io_req=0x92b07e0,
offset=1145044992, page_offset=0, len=32768, page=0x16)
at arch/um/drivers/ubd_kern.c:1076
#9 0x080838f2 in do_ubd_request (q=0x9754000)
at arch/um/drivers/ubd_kern.c:1112
#10 0x08310157 in __generic_unplug_device (q=0x9754000)
at block/ll_rw_blk.c:1597
#11 0x083101b7 in generic_unplug_device (q=0x9754000) at block/ll_rw_blk.c:1615
#12 0x0831021a in blk_backing_dev_unplug (bdi=0x9754090, page=0x98a8a40)
at block/ll_rw_blk.c:1632
#13 0x081d4aaf in block_sync_page (page=0x16) at include/linux/blkdev.h:693
#14 0x0811bcb3 in sync_page (word=0x16) at mm/filemap.c:167
#15 0x084f6d74 in __wait_on_bit_lock (wq=0x9903078, q=0x9293d94,
action=0x811bba0 <sync_page>, mode=2) at kernel/wait.c:195
#16 0x0811cfbb in __lock_page (page=0x98a8a40) at mm/filemap.c:571
#17 0x0811f7f3 in filemap_nopage (area=0x97d7268, address=1073938432,
type=0x9293e30) at include/linux/pagemap.h:167
#18 0x08143389 in do_no_page (mm=0x9702600, vma=0x97d7268, address=1073939479,
page_table=0x96c40c0, pmd=0x975a400, write_access=0) at mm/memory.c:2311
#19 0x08144413 in __handle_mm_fault (mm=0x9702600, vma=0x97d7268,
address=1073939479, write_access=0) at mm/memory.c:2536
#20 0x0806c0a5 in handle_page_fault (address=1073939479, ip=0, is_write=0,
is_user=1, code_out=0x9293edc) at include/linux/mm.h:777
#21 0x0806c823 in segv (fi={error_code = 4, cr2 = 1073939479, trap_no = 0},
ip=0, is_user=1, regs=0x0) at arch/um/kernel/trap.c:179
#22 0x08096bca in handle_segv (pid=14853, regs=0x99141bc)
at arch/um/os-Linux/skas/process.c:137
#23 0x08097a74 in userspace (regs=0x99141bc)
at arch/um/os-Linux/skas/process.c:327
#24 0x0806e191 in new_thread_handler () at arch/um/kernel/skas/process.c:68
#25 0x00000000 in ?? ()