BUG: sleeping function called from invalid context at kernel/workqueue.c:3414 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5970, name: syz.2.24 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 6 locks held by syz.2.24/5970: #0: ffffffff9769df38 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:164 [inline] #0: ffffffff9769df38 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] #0: ffffffff9769df38 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv+0x353/0xa60 drivers/infiniband/core/netlink.c:259 #1: ffffffff8e18f3d0 (link_ops_rwsem){++++}-{3:3}, at: nldev_newlink+0x406/0x610 drivers/infiniband/core/nldev.c:1722 #2: ffffffff8e181d70 (devices_rwsem){++++}-{3:3}, at: enable_device_and_get+0x100/0x3d0 drivers/infiniband/core/device.c:1332 #3: ffffffff8e181f30 (rdma_nets_rwsem){.+.+}-{3:3}, at: add_compat_devs drivers/infiniband/core/device.c:1035 [inline] #3: ffffffff8e181f30 (rdma_nets_rwsem){.+.+}-{3:3}, at: enable_device_and_get+0x279/0x3d0 drivers/infiniband/core/device.c:1348 #4: ffff88807e500f70 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0xee/0x5c0 drivers/infiniband/core/device.c:953 #5: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 Preemption disabled at: [] unwind_next_frame+0xb7/0x2990 arch/x86/kernel/unwind_orc.c:479 CPU: 0 PID: 5970 Comm: syz.2.24 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 __might_resched+0x48d/0x5f0 kernel/sched/core.c:10212 start_flush_work kernel/workqueue.c:3414 [inline] __flush_work+0x10f/0xac0 kernel/workqueue.c:3474 __cancel_work_timer+0x3f8/0x560 kernel/workqueue.c:3562 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:694 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:unwind_next_frame+0x169c/0x2990 arch/x86/kernel/unwind_orc.c:641 Code: 00 00 fc ff df 42 0f b6 04 3b 84 c0 0f 85 d7 10 00 00 41 c6 06 00 48 8b 5c 24 20 4c 8b 74 24 40 48 8b 44 24 50 42 0f b6 04 38 <84> c0 0f 85 58 0e 00 00 43 0f b6 04 3e 84 c0 0f 85 6f 0e 00 00 48 RSP: 0018:ffffc90004d0e238 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8f7f067c RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90004d0e368 RBP: ffffc90004d0e358 R08: ffffc90004d0e367 R09: 0000000000000000 R10: ffffc90004d0e358 R11: fffff520009a1c6d R12: ffffc90004d0eea0 R13: ffffc90004d0e308 R14: 1ffffffff1efe0d0 R15: dffffc0000000000 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4e/0x70 mm/kasan/common.c:53 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:770 slab_alloc_node mm/slub.c:3495 [inline] slab_alloc mm/slub.c:3503 [inline] __kmem_cache_alloc_lru mm/slub.c:3510 [inline] kmem_cache_alloc+0x17e/0x2c0 mm/slub.c:3519 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xe5/0x7f0 fs/kernfs/dir.c:624 kernfs_new_node+0x14c/0x260 fs/kernfs/dir.c:700 __kernfs_create_file+0x4b/0x2e0 fs/kernfs/file.c:1068 sysfs_add_file_mode_ns+0x237/0x2f0 fs/sysfs/file.c:298 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x431/0xd10 fs/sysfs/group.c:152 internal_create_groups fs/sysfs/group.c:192 [inline] sysfs_create_groups+0x59/0x120 fs/sysfs/group.c:218 setup_port drivers/infiniband/core/sysfs.c:1259 [inline] ib_setup_port_attrs+0xf6c/0x2370 drivers/infiniband/core/sysfs.c:1445 add_one_compat_dev+0x3d8/0x5c0 drivers/infiniband/core/device.c:979 add_compat_devs drivers/infiniband/core/device.c:1037 [inline] enable_device_and_get+0x2b0/0x3d0 drivers/infiniband/core/device.c:1348 ib_register_device+0x108c/0x1350 drivers/infiniband/core/device.c:1430 rxe_register_device+0x222/0x340 drivers/infiniband/sw/rxe/rxe_verbs.c:1548 rxe_net_add+0x5c/0xb0 drivers/infiniband/sw/rxe/rxe_net.c:533 rxe_newlink+0xdf/0x190 drivers/infiniband/sw/rxe/rxe.c:201 nldev_newlink+0x593/0x610 drivers/infiniband/core/nldev.c:1732 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline] rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x6fd/0xa60 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x7b1/0x930 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1899 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x61b/0x980 net/socket.c:2595 ___sys_sendmsg+0x2a6/0x360 net/socket.c:2649 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2687 [inline] __se_sys_sendmsg+0x1d0/0x2c0 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f262c59e019 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f262d465028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f262c825fa0 RCX: 00007f262c59e019 RDX: 0000000000000000 RSI: 0000200000000300 RDI: 0000000000000003 RBP: 00007f262c63500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f262c826038 R14: 00007f262c825fa0 R15: 00007ffd4a8971f8 BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1381 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5970, name: syz.2.24 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 6 locks held by syz.2.24/5970: #0: ffffffff9769df38 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:164 [inline] #0: ffffffff9769df38 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] #0: ffffffff9769df38 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv+0x353/0xa60 drivers/infiniband/core/netlink.c:259 #1: ffffffff8e18f3d0 (link_ops_rwsem){++++}-{3:3}, at: nldev_newlink+0x406/0x610 drivers/infiniband/core/nldev.c:1722 #2: ffffffff8e181d70 (devices_rwsem){++++}-{3:3}, at: enable_device_and_get+0x100/0x3d0 drivers/infiniband/core/device.c:1332 #3: ffffffff8e181f30 (rdma_nets_rwsem){.+.+}-{3:3}, at: add_compat_devs drivers/infiniband/core/device.c:1035 [inline] #3: ffffffff8e181f30 (rdma_nets_rwsem){.+.+}-{3:3}, at: enable_device_and_get+0x279/0x3d0 drivers/infiniband/core/device.c:1348 #4: ffff88807e500f70 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0xee/0x5c0 drivers/infiniband/core/device.c:953 #5: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 Preemption disabled at: [] unwind_next_frame+0xb7/0x2990 arch/x86/kernel/unwind_orc.c:479 CPU: 0 PID: 5970 Comm: syz.2.24 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 __might_resched+0x48d/0x5f0 kernel/sched/core.c:10212 __synchronize_srcu+0x197/0x3d0 kernel/rcu/srcutree.c:1381 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline] wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77 device_release+0xbc/0x1e0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x21b/0x450 lib/kobject.c:737 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:unwind_next_frame+0x169c/0x2990 arch/x86/kernel/unwind_orc.c:641 Code: 00 00 fc ff df 42 0f b6 04 3b 84 c0 0f 85 d7 10 00 00 41 c6 06 00 48 8b 5c 24 20 4c 8b 74 24 40 48 8b 44 24 50 42 0f b6 04 38 <84> c0 0f 85 58 0e 00 00 43 0f b6 04 3e 84 c0 0f 85 6f 0e 00 00 48 RSP: 0018:ffffc90004d0e238 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8f7f067c RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90004d0e368 RBP: ffffc90004d0e358 R08: ffffc90004d0e367 R09: 0000000000000000 R10: ffffc90004d0e358 R11: fffff520009a1c6d R12: ffffc90004d0eea0 R13: ffffc90004d0e308 R14: 1ffffffff1efe0d0 R15: dffffc0000000000 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4e/0x70 mm/kasan/common.c:53 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:770 slab_alloc_node mm/slub.c:3495 [inline] slab_alloc mm/slub.c:3503 [inline] __kmem_cache_alloc_lru mm/slub.c:3510 [inline] kmem_cache_alloc+0x17e/0x2c0 mm/slub.c:3519 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xe5/0x7f0 fs/kernfs/dir.c:624 kernfs_new_node+0x14c/0x260 fs/kernfs/dir.c:700 __kernfs_create_file+0x4b/0x2e0 fs/kernfs/file.c:1068 sysfs_add_file_mode_ns+0x237/0x2f0 fs/sysfs/file.c:298 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x431/0xd10 fs/sysfs/group.c:152 internal_create_groups fs/sysfs/group.c:192 [inline] sysfs_create_groups+0x59/0x120 fs/sysfs/group.c:218 setup_port drivers/infiniband/core/sysfs.c:1259 [inline] ib_setup_port_attrs+0xf6c/0x2370 drivers/infiniband/core/sysfs.c:1445 add_one_compat_dev+0x3d8/0x5c0 drivers/infiniband/core/device.c:979 add_compat_devs drivers/infiniband/core/device.c:1037 [inline] enable_device_and_get+0x2b0/0x3d0 drivers/infiniband/core/device.c:1348 ib_register_device+0x108c/0x1350 drivers/infiniband/core/device.c:1430 rxe_register_device+0x222/0x340 drivers/infiniband/sw/rxe/rxe_verbs.c:1548 rxe_net_add+0x5c/0xb0 drivers/infiniband/sw/rxe/rxe_net.c:533 rxe_newlink+0xdf/0x190 drivers/infiniband/sw/rxe/rxe.c:201 nldev_newlink+0x593/0x610 drivers/infiniband/core/nldev.c:1732 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline] rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x6fd/0xa60 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x7b1/0x930 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1899 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x61b/0x980 net/socket.c:2595 ___sys_sendmsg+0x2a6/0x360 net/socket.c:2649 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2687 [inline] __se_sys_sendmsg+0x1d0/0x2c0 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f262c59e019 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f262d465028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f262c825fa0 RCX: 00007f262c59e019 RDX: 0000000000000000 RSI: 0000200000000300 RDI: 0000000000000003 RBP: 00007f262c63500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f262c826038 R14: 00007f262c825fa0 R15: 00007ffd4a8971f8 ODEBUG: object ffffc900000079c0 is NOT on stack ffffc90004d08000, but annotated. ====================================================== ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: fc cld 3: ff lcall (bad) 4: df 42 0f filds 0xf(%rdx) 7: b6 04 mov $0x4,%dh 9: 3b 84 c0 0f 85 d7 10 cmp 0x10d7850f(%rax,%rax,8),%eax 10: 00 00 add %al,(%rax) 12: 41 c6 06 00 movb $0x0,(%r14) 16: 48 8b 5c 24 20 mov 0x20(%rsp),%rbx 1b: 4c 8b 74 24 40 mov 0x40(%rsp),%r14 20: 48 8b 44 24 50 mov 0x50(%rsp),%rax 25: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 0f 85 58 0e 00 00 jne 0xe8a 32: 43 0f b6 04 3e movzbl (%r14,%r15,1),%eax 37: 84 c0 test %al,%al 39: 0f 85 6f 0e 00 00 jne 0xeae 3f: 48 rex.W