CVE-2022-49322

tracing: Fix sleeping function called from invalid context on RT kernel

State: Published
Severity: 5.5 Medium
Published: Feb 26, 2025
Updated: May 11, 2026
Reserved: Feb 26, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

tracing: Fix sleeping function called from invalid context on RT kernel

When setting bootparams="trace_event=initcall:initcall_start tp_printk=1" in the cmdline, the output_printk() was called, and the spin_lock_irqsave() was called in the atomic and irq disable interrupt context suitation. On the PREEMPT_RT kernel, these locks are replaced with sleepable rt-spinlock, so the stack calltrace will be triggered. Fix it by raw_spin_lock_irqsave when PREEMPT_RT and "trace_event=initcall:initcall_start tp_printk=1" enabled.

BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0 preempt_count: 2, expected: 0 RCU nest depth: 0, expected: 0 Preemption disabled at: [<ffffffff8992303e>] try_to_wake_up+0x7e/0xba0 CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.1-rt17+ #19 34c5812404187a875f32bee7977f7367f9679ea7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x60/0x8c dump_stack+0x10/0x12 __might_resched.cold+0x11d/0x155 rt_spin_lock+0x40/0x70 trace_event_buffer_commit+0x2fa/0x4c0 ? map_vsyscall+0x93/0x93 trace_event_raw_event_initcall_start+0xbe/0x110 ? perf_trace_initcall_finish+0x210/0x210 ? probe_sched_wakeup+0x34/0x40 ? ttwu_do_wakeup+0xda/0x310 ? trace_hardirqs_on+0x35/0x170 ? map_vsyscall+0x93/0x93 do_one_initcall+0x217/0x3c0 ? trace_event_raw_event_initcall_level+0x170/0x170 ? push_cpu_stop+0x400/0x400 ? cblist_init_generic+0x241/0x290 kernel_init_freeable+0x1ac/0x347 ? _raw_spin_unlock_irq+0x65/0x80 ? rest_init+0xf0/0xf0 kernel_init+0x1e/0x150 ret_from_fork+0x22/0x30 </TASK>

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-667 Improper Locking

Affected Products

Product	Versions
LinuxLinux	0daa2302968c13b657118d6ac92471f8fd2f3f28 to before be1f323fb9d9b14a505ca22d742d321769454de1Affected 0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 40f9fde06b25884baa0c4bd138b909a9b67218b4Affected 0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 48c6ee7d6c614f09b2c8553a95eefef6ecf196e0Affected 0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 1788e6dbb61286215442b1af99e51405a6206762Affected 0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 9b534640a2c6a8d88168febc82ec6d161184f2ecAffected 0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 43bfc4dccc416c964b53cbdc430e814f8b6f770bAffected 0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 9abf3db8bdb63ab545034148ef2118f4d088ca59Affected 0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 12025abdc8539ed9d5014e2d647a3fd1bd3de5cdAffected
LinuxLinux	3.19Affected before 3.19Not affected 4.14.283 through 4.14.Not affected 4.19.247 through 4.19.Not affected 5.4.198 through 5.4.Not affected 5.10.122 through 5.10.Not affected 5.15.47 through 5.15.Not affected 5.17.15 through 5.17.Not affected 5.18.4 through 5.18.*Not affected 5.19 and laterNot affected

Product

Versions

LinuxLinux

0daa2302968c13b657118d6ac92471f8fd2f3f28 to before be1f323fb9d9b14a505ca22d742d321769454de1Affected
0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 40f9fde06b25884baa0c4bd138b909a9b67218b4Affected
0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 48c6ee7d6c614f09b2c8553a95eefef6ecf196e0Affected
0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 1788e6dbb61286215442b1af99e51405a6206762Affected
0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 9b534640a2c6a8d88168febc82ec6d161184f2ecAffected
0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 43bfc4dccc416c964b53cbdc430e814f8b6f770bAffected
0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 9abf3db8bdb63ab545034148ef2118f4d088ca59Affected
0daa2302968c13b657118d6ac92471f8fd2f3f28 to before 12025abdc8539ed9d5014e2d647a3fd1bd3de5cdAffected

LinuxLinux

3.19Affected
before 3.19Not affected
4.14.283 through 4.14.*Not affected
4.19.247 through 4.19.*Not affected
5.4.198 through 5.4.*Not affected
5.10.122 through 5.10.*Not affected
5.15.47 through 5.15.*Not affected
5.17.15 through 5.17.*Not affected
5.18.4 through 5.18.*Not affected
5.19 and laterNot affected

References

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