{"cve":"CVE-2022-49322","nvd":{"published":"2025-02-26T07:01:09.030","modified":"2026-06-17T05:17:42.783","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix sleeping function called from invalid context on RT kernel\n\nWhen setting bootparams=\"trace_event=initcall:initcall_start tp_printk=1\" in the\ncmdline, the output_printk() was called, and the spin_lock_irqsave() was called in the\natomic and irq disable interrupt context suitation. On the PREEMPT_RT kernel,\nthese locks are replaced with sleepable rt-spinlock, so the stack calltrace will\nbe triggered.\nFix it by raw_spin_lock_irqsave when PREEMPT_RT and \"trace_event=initcall:initcall_start\ntp_printk=1\" enabled.\n\n BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46\n in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0\n preempt_count: 2, expected: 0\n RCU nest depth: 0, expected: 0\n Preemption disabled at:\n [<ffffffff8992303e>] try_to_wake_up+0x7e/0xba0\n CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.1-rt17+ #19 34c5812404187a875f32bee7977f7367f9679ea7\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014\n Call Trace:\n  <TASK>\n  dump_stack_lvl+0x60/0x8c\n  dump_stack+0x10/0x12\n  __might_resched.cold+0x11d/0x155\n  rt_spin_lock+0x40/0x70\n  trace_event_buffer_commit+0x2fa/0x4c0\n  ? map_vsyscall+0x93/0x93\n  trace_event_raw_event_initcall_start+0xbe/0x110\n  ? perf_trace_initcall_finish+0x210/0x210\n  ? probe_sched_wakeup+0x34/0x40\n  ? ttwu_do_wakeup+0xda/0x310\n  ? trace_hardirqs_on+0x35/0x170\n  ? map_vsyscall+0x93/0x93\n  do_one_initcall+0x217/0x3c0\n  ? trace_event_raw_event_initcall_level+0x170/0x170\n  ? push_cpu_stop+0x400/0x400\n  ? cblist_init_generic+0x241/0x290\n  kernel_init_freeable+0x1ac/0x347\n  ? _raw_spin_unlock_irq+0x65/0x80\n  ? rest_init+0xf0/0xf0\n  kernel_init+0x1e/0x150\n  ret_from_fork+0x22/0x30\n  </TASK>","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-667"],"references":["https://git.kernel.org/stable/c/12025abdc8539ed9d5014e2d647a3fd1bd3de5cd","https://git.kernel.org/stable/c/1788e6dbb61286215442b1af99e51405a6206762","https://git.kernel.org/stable/c/40f9fde06b25884baa0c4bd138b909a9b67218b4","https://git.kernel.org/stable/c/43bfc4dccc416c964b53cbdc430e814f8b6f770b","https://git.kernel.org/stable/c/48c6ee7d6c614f09b2c8553a95eefef6ecf196e0"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49322","score":0.00215,"percentile":0.11993,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}