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X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Jan 2026 14:12:58.6061 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: UJmdFtl4J9i8VhY6D8eT+6Xztl/mpHnB2szdx/4vE//Vnj6X7UnOlsJ83DxRZqQNHl4Y3u6GAcYo5b6DxSk9lA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB6194 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "BUG:sleeping_function_called_from_invalid_context_at_include/linux/sched/mm.h" on: commit: 80a26374d24c6a7ca964ad427e3a54852f0803b8 ("dyndbg: walk dd_mod_map intervals in dynamic_debug_init()") https://github.com/jimc/linux.git dd-drm-fix in testcase: boot config: i386-randconfig-012-20260127 compiler: gcc-12 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G (please refer to attached dmesg/kmsg for entire log/backtrace) +-------------------------------------------------------------------------------+------------+------------+ | | bd091f80c8 | 80a26374d2 | +-------------------------------------------------------------------------------+------------+------------+ | BUG:sleeping_function_called_from_invalid_context_at_include/linux/sched/mm.h | 0 | 12 | +-------------------------------------------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202601282112.3e252f09-lkp@intel.com [ 0.666972][ T1] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:323 [ 0.668055][ T1] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0 [ 0.669517][ T1] preempt_count: 0, expected: 0 [ 0.670309][ T1] RCU nest depth: 1, expected: 0 [ 0.671155][ T1] 1 lock held by swapper/0/1: [ 0.672117][ T1] #0: b2887bcc (rcu_read_lock){....}-{1:3}, at: dynamic_debug_init (lib/dynamic_debug.c:1797) [ 0.673765][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0-rc7-00040-g80a26374d24c #1 PREEMPT(lazy) e69b6cee1a878dce1581dfa5f5bb5383e6db0395 [ 0.676021][ T1] Call Trace: [ 0.676021][ T1] dump_stack_lvl (lib/dump_stack.c:123 (discriminator 1)) [ 0.676021][ T1] dump_stack (lib/dump_stack.c:130) [ 0.676021][ T1] __might_resched (kernel/sched/core.c:8830) [ 0.676021][ T1] ? mtree_store_range (lib/maple_tree.c:5938) [ 0.676021][ T1] __might_sleep (kernel/sched/core.c:8759 (discriminator 17)) [ 0.676021][ T1] __kmalloc_cache_noprof (include/linux/kernel.h:61 include/linux/sched/mm.h:323 mm/slub.c:4904 mm/slub.c:5239 mm/slub.c:5775) [ 0.676021][ T1] ? ddebug_add_module (include/linux/slab.h:957 (discriminator 3) include/linux/slab.h:1094 (discriminator 3) lib/dynamic_debug.c:1577 (discriminator 3)) [ 0.676021][ T1] ddebug_add_module (include/linux/slab.h:957 (discriminator 3) include/linux/slab.h:1094 (discriminator 3) lib/dynamic_debug.c:1577 (discriminator 3)) [ 0.676021][ T1] dynamic_debug_init (lib/dynamic_debug.c:1811) [ 0.676021][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1769) [ 0.676021][ T1] do_one_initcall (init/main.c:1378) [ 0.676021][ T1] ? __register_sysctl_init (fs/proc/proc_sysctl.c:1467) [ 0.676021][ T1] ? rest_init (init/main.c:1570) [ 0.676021][ T1] ? init_mm_internals (mm/vmstat.c:2304) [ 0.676021][ T1] ? rest_init (init/main.c:1570) [ 0.676021][ T1] kernel_init_freeable (init/main.c:1483 init/main.c:1677) [ 0.676021][ T1] kernel_init (init/main.c:1580) [ 0.676021][ T1] ret_from_fork (arch/x86/kernel/process.c:164) [ 0.676021][ T1] ? rest_init (init/main.c:1570) [ 0.676021][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 0.676021][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) [ 0.676134][ T1] [ 0.676575][ T1] ============================= [ 0.677188][ T1] [ BUG: Invalid wait context ] [ 0.677997][ T1] 6.19.0-rc7-00040-g80a26374d24c #1 Tainted: G W [ 0.679361][ T1] ----------------------------- [ 0.680021][ T1] swapper/0/1 is trying to lock: [ 0.680021][ T1] b29409d4 (ddebug_lock){....}-{4:4}, at: ddebug_add_module (include/linux/list.h:191 lib/dynamic_debug.c:1601) [ 0.680021][ T1] other info that might help us debug this: [ 0.680021][ T1] context-{5:5} [ 0.680021][ T1] 1 lock held by swapper/0/1: [ 0.680021][ T1] #0: b2887bcc (rcu_read_lock){....}-{1:3}, at: dynamic_debug_init (lib/dynamic_debug.c:1797) [ 0.680021][ T1] stack backtrace: [ 0.680021][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W 6.19.0-rc7-00040-g80a26374d24c #1 PREEMPT(lazy) e69b6cee1a878dce1581dfa5f5bb5383e6db0395 [ 0.680021][ T1] Tainted: [W]=WARN [ 0.680021][ T1] Call Trace: [ 0.680021][ T1] dump_stack_lvl (lib/dump_stack.c:124) [ 0.680021][ T1] dump_stack (lib/dump_stack.c:130) [ 0.680021][ T1] __lock_acquire (kernel/locking/lockdep.c:4832 kernel/locking/lockdep.c:4902 kernel/locking/lockdep.c:5187) [ 0.680021][ T1] ? trace_preempt_on (kernel/trace/trace_preemptirq.c:122) [ 0.680021][ T1] lock_acquire (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) [ 0.680021][ T1] ? ddebug_add_module (include/linux/list.h:191 lib/dynamic_debug.c:1601) [ 0.680021][ T1] ? __mutex_lock (kernel/locking/mutex.c:614 kernel/locking/mutex.c:776) [ 0.680021][ T1] __mutex_lock (arch/x86/include/asm/jump_label.h:37 include/trace/events/lock.h:95 kernel/locking/mutex.c:616 kernel/locking/mutex.c:776) [ 0.680021][ T1] ? ddebug_add_module (include/linux/list.h:191 lib/dynamic_debug.c:1601) [ 0.680021][ T1] ? ddebug_condense_sites (lib/dynamic_debug.c:1555) [ 0.680021][ T1] ? ddebug_get_filename (lib/dynamic_debug.c:1520) [ 0.680021][ T1] mutex_lock_nested (kernel/locking/mutex.c:829) [ 0.680021][ T1] ? ddebug_add_module (include/linux/list.h:191 lib/dynamic_debug.c:1601) [ 0.680021][ T1] ddebug_add_module (include/linux/list.h:191 lib/dynamic_debug.c:1601) [ 0.680021][ T1] dynamic_debug_init (lib/dynamic_debug.c:1811) [ 0.680021][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1769) [ 0.680021][ T1] do_one_initcall (init/main.c:1378) [ 0.680021][ T1] ? __register_sysctl_init (fs/proc/proc_sysctl.c:1467) [ 0.680021][ T1] ? rest_init (init/main.c:1570) [ 0.680021][ T1] ? init_mm_internals (mm/vmstat.c:2304) [ 0.680021][ T1] ? rest_init (init/main.c:1570) [ 0.680021][ T1] kernel_init_freeable (init/main.c:1483 init/main.c:1677) [ 0.680021][ T1] kernel_init (init/main.c:1580) [ 0.680021][ T1] ret_from_fork (arch/x86/kernel/process.c:164) [ 0.680021][ T1] ? rest_init (init/main.c:1570) [ 0.680021][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 0.680021][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:945) [ 0.684801][ T1] Memory: 2985172K/3145208K available (15891K kernel code, 5186K rwdata, 5772K rodata, 1056K init, 7324K bss, 154192K reserved, 0K cma-reserved, 1978248K highmem) [ 0.688021][ T1] devtmpfs: initialized The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260128/202601282112.3e252f09-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki