Hello,
When I want to create a device mapper table in user-mode-linux, I get
BUG: failure at mm/bounce.c:85/init_emergency_isa_pool()!
(full stack trace below)
I think this behaviour was introduced by:
[PATCH] uml: get rid of ZONE_DMA use
I got it to work by reversing the patch.
Greetings,
Rik.
Trace:
BUG: failure at mm/bounce.c:85/init_emergency_isa_pool()!
Kernel panic - not syncing: BUG!
EIP: 0073:[<401300c4>] CPU: 0 Not tainted ESP: 007b:bf433948 EFLAGS:
00000246
Not tainted
EAX: ffffffda EBX: 00000003 ECX: c134fd03 EDX: 08050408
ESI: 400287c0 EDI: 40026180 EBP: bf433a98 DS: 007b ES: 007b
0901bd78: [<080686b0>] show_regs+0xb4/0xb9
0901bda4: [<0805a4c3>] panic_exit+0x25/0x3f
0901bdb8: [<0807b018>] notifier_call_chain+0x1d/0x3c
0901bdd8: [<0807b0a7>] atomic_notifier_call_chain+0x11/0x13
0901bdec: [<0806f96e>] panic+0x52/0xdd
0901be0c: [<0809b91b>] init_emergency_isa_pool+0x4b/0x5d
0901be28: [<080f3cbd>] blk_queue_bounce_limit+0x33/0x48
0901be3c: [<081106a5>] alloc_dev+0xf4/0x285
0901be64: [<081109c1>] dm_create+0xb/0x20
0901be70: [<08113205>] dev_create+0x3f/0x9b
0901be90: [<08114047>] ctl_ioctl+0xd7/0x10e
0901beb8: [<080ae385>] do_ioctl+0x45/0x5a
0901bed8: [<080ae717>] vfs_ioctl+0x1ec/0x209
0901bf00: [<080ae762>] sys_ioctl+0x2e/0x4c
0901bf28: [<0805ac46>] handle_syscall+0x86/0xa0
0901bf74: [<08065805>] handle_trap+0xbe/0xc7
0901bf90: [<08065bf3>] userspace+0x123/0x166
0901bfdc: [<0805a985>] fork_handler+0x74/0x7c
0901bffc: [<a55a5a5a>] 0xa55a5a5a
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