Tiwei Bie ebbcc30756 um: net: Do not use drvdata in release ... commit d1db692a9be3b4bd3473b64fcae996afaffe8438 upstream. The drvdata is not available in release. Let's just use container_of() to get the uml_net instance. Otherwise, removing a network device will result in a crash: RIP: 0033:net_device_release+0x10/0x6f RSP: 00000000e20c7c40 EFLAGS: 00010206 RAX: 000000006002e4e7 RBX: 00000000600f1baf RCX: 00000000624074e0 RDX: 0000000062778000 RSI: 0000000060551c80 RDI: 00000000627af028 RBP: 00000000e20c7c50 R08: 00000000603ad594 R09: 00000000e20c7b70 R10: 000000000000135a R11: 00000000603ad422 R12: 0000000000000000 R13: 0000000062c7af00 R14: 0000000062406d60 R15: 00000000627700b6 Kernel panic - not syncing: Segfault with no mm CPU: 0 UID: 0 PID: 29 Comm: kworker/0:2 Not tainted 6.12.0-rc6-g59b723cd2adb #1 Workqueue: events mc_work_proc Stack: 627af028 62c7af00 e20c7c80 60276fcd 62778000 603f5820 627af028 00000000 e20c7cb0 603a2bcd 627af000 62770010 Call Trace: [<60276fcd>] device_release+0x70/0xba [<603a2bcd>] kobject_put+0xba/0xe7 [<60277265>] put_device+0x19/0x1c [<60281266>] platform_device_put+0x26/0x29 [<60281e5f>] platform_device_unregister+0x2c/0x2e [<6002ec9c>] net_remove+0x63/0x69 [<60031316>] ? mconsole_reply+0x0/0x50 [<600310c8>] mconsole_remove+0x160/0x1cc [<60087d40>] ? __remove_hrtimer+0x38/0x74 [<60087ff8>] ? hrtimer_try_to_cancel+0x8c/0x98 [<6006b3cf>] ? dl_server_stop+0x3f/0x48 [<6006b390>] ? dl_server_stop+0x0/0x48 [<600672e8>] ? dequeue_entities+0x327/0x390 [<60038fa6>] ? um_set_signals+0x0/0x43 [<6003070c>] mc_work_proc+0x77/0x91 [<60057664>] process_scheduled_works+0x1b3/0x2dd [<60055f32>] ? assign_work+0x0/0x58 [<60057f0a>] worker_thread+0x1e9/0x293 [<6005406f>] ? set_pf_worker+0x0/0x64 [<6005d65d>] ? arch_local_irq_save+0x0/0x2d [<6005d748>] ? kthread_exit+0x0/0x3a [<60057d21>] ? worker_thread+0x0/0x293 [<6005dbf1>] kthread+0x126/0x12b [<600219c5>] new_thread_handler+0x85/0xb6 Cc: stable@vger.kernel.org Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com> Link: https://patch.msgid.link/20241104163203.435515-4-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-12-17 13:24:19 +01:00
..
alpha	Import A536BXXU9EXDC	2024-06-15 16:02:09 -03:00
arc	ARC: [plat-hsdk]: Remove misplaced interrupt-cells property	2024-11-19 11:32:36 +01:00
arm	ARM: dts: cubieboard4: Fix DCDC5 regulator constraints	2024-12-17 13:24:03 +01:00
arm64	KVM: arm64: Ignore PMCNTENSET_EL0 while checking for overflow status	2024-12-17 13:24:18 +01:00
c6x	Import A536BXXU9EXDC	2024-06-15 16:02:09 -03:00
csky	csky, hexagon: fix broken sys_sync_file_range	2024-11-19 14:19:34 +01:00
h8300	Import A536BXXU9EXDC	2024-06-15 16:02:09 -03:00
hexagon	hexagon: fix fadvise64_64 calling conventions	2024-11-19 14:19:34 +01:00
ia64	efi: ia64: move IA64-only declarations to new asm/efi.h header	2024-11-19 14:19:45 +01:00
m68k	m68k: coldfire/device.c: only build FEC when HW macros are defined	2024-12-17 13:24:12 +01:00
microblaze	Revert "microblaze: don't treat zero reserved memory regions as error"	2024-11-24 00:23:33 +01:00
mips	clkdev: remove CONFIG_CLKDEV_LOOKUP	2024-12-17 13:24:00 +01:00
nds32	Import A536BXXU9EXDC	2024-06-15 16:02:09 -03:00
nios2	Import A536BXXU9EXDC	2024-06-15 16:02:09 -03:00
openrisc	openrisc: Call setup_memory() earlier in the init sequence	2024-11-23 23:20:47 +01:00
parisc	Revert "parisc: Fix itlb miss handler for 64-bit programs"	2024-11-24 00:23:05 +01:00
powerpc	powerpc/kexec: Fix return of uninitialized variable	2024-12-17 13:24:09 +01:00
riscv	Revert "riscv: Fix fp alignment bug in perf_callchain_user()"	2024-11-24 00:23:20 +01:00
s390	s390/syscalls: Avoid creation of arch/arch/ directory	2024-12-17 13:23:59 +01:00
sh	clkdev: remove CONFIG_CLKDEV_LOOKUP	2024-12-17 13:24:00 +01:00
sparc	sparc64: Fix incorrect function signature and add prototype for prom_cif_init	2024-11-23 23:20:10 +01:00
um	um: net: Do not use drvdata in release	2024-12-17 13:24:19 +01:00
x86	crypto: x86/aegis128 - access 32-bit arguments as 32-bit	2024-12-17 13:24:17 +01:00
xtensa	Import A536BXXU9EXDC	2024-06-15 16:02:09 -03:00
Kconfig	cpu: Re-enable CPU mitigations by default for !X86 architectures	2024-11-19 11:32:38 +01:00